Mysterious Driveline Vibration
09-09-2004, 12:34 PM
#21
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
It's a Tom Wood's CV shaft, and it hasn't been apart so the yokes are still
in phase. It didn't used to vibrate, that started recently.
/Peter
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:41406E5E.3A66D53E@sympatico.ca...
> Could your driveshaft be out of sync? Are the u-joints at the ends
> lined up the same? For instance, if the clamp on the u-joint ear is
> rotated up in the front, is the rear joint also sitting with the ear
> clamp up?
>
> If so, then my guess is the driveshaft is a bad one. There are shops
> around that can balance them.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Peter Pontbriand wrote:
> >
> > So, what else could cause a vibration at higher road speeds?
> >
> > /Peter
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:ohZ%c.78797$yh.12931@fed1read05...
> > > No more than one degree on a TJ. You only use more when there are
leaf
> > > springs because axle wrap is a bigger problem for them.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > PP-ASEL N6TAY
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > > "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> > > news:chph57$5h7$1@news.storm.ca...
> > > > You bet. Actually, the pinion is 1 degree lower than the shaft to
cover
> > > > flexing of the rubber suspension link bushings while under cruising
> > load.
> > > > Maybe it should be more than 1 degree?
> > > >
> > > > /Peter
> > > >
> > > > ----- Original Message -----
> > > > From: "L.W. (ßill) ------ III" <----------@***.net>
> > > > Newsgroups: rec.autos.makers.jeep+******
> > > > Sent: Wednesday, September 08, 2004 10:39 PM
> > > > Subject: Re: Mysterious Driveline Vibration
> > > >
> > > >
> > > >> Hi Peter,
> > > >> Did you move the pinion angle up to point directly at the
transfer
> > > >> yoke: http://www.4xshaft.com/driveline101.html
> > > >> God Bless America, ßill O|||||||O
> > > >> mailto:-------------------- http://www.----------.com/
> > > >>
> > > >> Peter Pontbriand wrote:
> > > >> >
> > > >> > I'm stumped. A while back my '02 TJ decided to start getting a
pretty
> > > > bad
> > > >> > vibration from about 65 miles per hour on up. It doesn't matter
what
> > > > gear I
> > > >> > am in or which set of tires I have on, its always related to road
> > > >> > speed.
> > > > If
> > > >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> > > > disappears.
> > > >> > That suggests to me a problem with the driveshaft, yet all the
> > ujoints
> > > > and
> > > >> > the centering ball are fine, no balance weights are missing, and
> > > >> > there's
> > > > no
> > > >> > sign of any sort of damage. The pinion yoke and transfer case
output
> > > > seem
> > > >> > fine as well, no discernable untoward movements there.
> > > >> >
> > > >> > What am I missing here? What could possibly be the source of this
> > > > vibration?
> > > >> >
> > > >> > /Peter
> > > >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other
things).
> > > >
> > > >
> > >
> > >
in phase. It didn't used to vibrate, that started recently.
/Peter
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:41406E5E.3A66D53E@sympatico.ca...
> Could your driveshaft be out of sync? Are the u-joints at the ends
> lined up the same? For instance, if the clamp on the u-joint ear is
> rotated up in the front, is the rear joint also sitting with the ear
> clamp up?
>
> If so, then my guess is the driveshaft is a bad one. There are shops
> around that can balance them.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Peter Pontbriand wrote:
> >
> > So, what else could cause a vibration at higher road speeds?
> >
> > /Peter
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:ohZ%c.78797$yh.12931@fed1read05...
> > > No more than one degree on a TJ. You only use more when there are
leaf
> > > springs because axle wrap is a bigger problem for them.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > PP-ASEL N6TAY
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > > "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> > > news:chph57$5h7$1@news.storm.ca...
> > > > You bet. Actually, the pinion is 1 degree lower than the shaft to
cover
> > > > flexing of the rubber suspension link bushings while under cruising
> > load.
> > > > Maybe it should be more than 1 degree?
> > > >
> > > > /Peter
> > > >
> > > > ----- Original Message -----
> > > > From: "L.W. (ßill) ------ III" <----------@***.net>
> > > > Newsgroups: rec.autos.makers.jeep+******
> > > > Sent: Wednesday, September 08, 2004 10:39 PM
> > > > Subject: Re: Mysterious Driveline Vibration
> > > >
> > > >
> > > >> Hi Peter,
> > > >> Did you move the pinion angle up to point directly at the
transfer
> > > >> yoke: http://www.4xshaft.com/driveline101.html
> > > >> God Bless America, ßill O|||||||O
> > > >> mailto:-------------------- http://www.----------.com/
> > > >>
> > > >> Peter Pontbriand wrote:
> > > >> >
> > > >> > I'm stumped. A while back my '02 TJ decided to start getting a
pretty
> > > > bad
> > > >> > vibration from about 65 miles per hour on up. It doesn't matter
what
> > > > gear I
> > > >> > am in or which set of tires I have on, its always related to road
> > > >> > speed.
> > > > If
> > > >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> > > > disappears.
> > > >> > That suggests to me a problem with the driveshaft, yet all the
> > ujoints
> > > > and
> > > >> > the centering ball are fine, no balance weights are missing, and
> > > >> > there's
> > > > no
> > > >> > sign of any sort of damage. The pinion yoke and transfer case
output
> > > > seem
> > > >> > fine as well, no discernable untoward movements there.
> > > >> >
> > > >> > What am I missing here? What could possibly be the source of this
> > > > vibration?
> > > >> >
> > > >> > /Peter
> > > >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other
things).
> > > >
> > > >
> > >
> > >
09-09-2004, 12:34 PM
#22
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
It's a Tom Wood's CV shaft, and it hasn't been apart so the yokes are still
in phase. It didn't used to vibrate, that started recently.
/Peter
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:41406E5E.3A66D53E@sympatico.ca...
> Could your driveshaft be out of sync? Are the u-joints at the ends
> lined up the same? For instance, if the clamp on the u-joint ear is
> rotated up in the front, is the rear joint also sitting with the ear
> clamp up?
>
> If so, then my guess is the driveshaft is a bad one. There are shops
> around that can balance them.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Peter Pontbriand wrote:
> >
> > So, what else could cause a vibration at higher road speeds?
> >
> > /Peter
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:ohZ%c.78797$yh.12931@fed1read05...
> > > No more than one degree on a TJ. You only use more when there are
leaf
> > > springs because axle wrap is a bigger problem for them.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > PP-ASEL N6TAY
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > > "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> > > news:chph57$5h7$1@news.storm.ca...
> > > > You bet. Actually, the pinion is 1 degree lower than the shaft to
cover
> > > > flexing of the rubber suspension link bushings while under cruising
> > load.
> > > > Maybe it should be more than 1 degree?
> > > >
> > > > /Peter
> > > >
> > > > ----- Original Message -----
> > > > From: "L.W. (ßill) ------ III" <----------@***.net>
> > > > Newsgroups: rec.autos.makers.jeep+******
> > > > Sent: Wednesday, September 08, 2004 10:39 PM
> > > > Subject: Re: Mysterious Driveline Vibration
> > > >
> > > >
> > > >> Hi Peter,
> > > >> Did you move the pinion angle up to point directly at the
transfer
> > > >> yoke: http://www.4xshaft.com/driveline101.html
> > > >> God Bless America, ßill O|||||||O
> > > >> mailto:-------------------- http://www.----------.com/
> > > >>
> > > >> Peter Pontbriand wrote:
> > > >> >
> > > >> > I'm stumped. A while back my '02 TJ decided to start getting a
pretty
> > > > bad
> > > >> > vibration from about 65 miles per hour on up. It doesn't matter
what
> > > > gear I
> > > >> > am in or which set of tires I have on, its always related to road
> > > >> > speed.
> > > > If
> > > >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> > > > disappears.
> > > >> > That suggests to me a problem with the driveshaft, yet all the
> > ujoints
> > > > and
> > > >> > the centering ball are fine, no balance weights are missing, and
> > > >> > there's
> > > > no
> > > >> > sign of any sort of damage. The pinion yoke and transfer case
output
> > > > seem
> > > >> > fine as well, no discernable untoward movements there.
> > > >> >
> > > >> > What am I missing here? What could possibly be the source of this
> > > > vibration?
> > > >> >
> > > >> > /Peter
> > > >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other
things).
> > > >
> > > >
> > >
> > >
in phase. It didn't used to vibrate, that started recently.
/Peter
"Mike Romain" <romainm@sympatico.ca> wrote in message
news:41406E5E.3A66D53E@sympatico.ca...
> Could your driveshaft be out of sync? Are the u-joints at the ends
> lined up the same? For instance, if the clamp on the u-joint ear is
> rotated up in the front, is the rear joint also sitting with the ear
> clamp up?
>
> If so, then my guess is the driveshaft is a bad one. There are shops
> around that can balance them.
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's
>
> Peter Pontbriand wrote:
> >
> > So, what else could cause a vibration at higher road speeds?
> >
> > /Peter
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:ohZ%c.78797$yh.12931@fed1read05...
> > > No more than one degree on a TJ. You only use more when there are
leaf
> > > springs because axle wrap is a bigger problem for them.
> > >
> > > Jerry
> > > --
> > > Jerry Bransford
> > > PP-ASEL N6TAY
> > > See the Geezer Jeep at
> > > http://members.***.net/jerrypb/
> > > "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> > > news:chph57$5h7$1@news.storm.ca...
> > > > You bet. Actually, the pinion is 1 degree lower than the shaft to
cover
> > > > flexing of the rubber suspension link bushings while under cruising
> > load.
> > > > Maybe it should be more than 1 degree?
> > > >
> > > > /Peter
> > > >
> > > > ----- Original Message -----
> > > > From: "L.W. (ßill) ------ III" <----------@***.net>
> > > > Newsgroups: rec.autos.makers.jeep+******
> > > > Sent: Wednesday, September 08, 2004 10:39 PM
> > > > Subject: Re: Mysterious Driveline Vibration
> > > >
> > > >
> > > >> Hi Peter,
> > > >> Did you move the pinion angle up to point directly at the
transfer
> > > >> yoke: http://www.4xshaft.com/driveline101.html
> > > >> God Bless America, ßill O|||||||O
> > > >> mailto:-------------------- http://www.----------.com/
> > > >>
> > > >> Peter Pontbriand wrote:
> > > >> >
> > > >> > I'm stumped. A while back my '02 TJ decided to start getting a
pretty
> > > > bad
> > > >> > vibration from about 65 miles per hour on up. It doesn't matter
what
> > > > gear I
> > > >> > am in or which set of tires I have on, its always related to road
> > > >> > speed.
> > > > If
> > > >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> > > > disappears.
> > > >> > That suggests to me a problem with the driveshaft, yet all the
> > ujoints
> > > > and
> > > >> > the centering ball are fine, no balance weights are missing, and
> > > >> > there's
> > > > no
> > > >> > sign of any sort of damage. The pinion yoke and transfer case
output
> > > > seem
> > > >> > fine as well, no discernable untoward movements there.
> > > >> >
> > > >> > What am I missing here? What could possibly be the source of this
> > > > vibration?
> > > >> >
> > > >> > /Peter
> > > >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other
things).
> > > >
> > > >
> > >
> > >
09-09-2004, 12:35 PM
#23
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
Okay, thanks, I just wanted to make sure there wasn't something obvious that
I missed. I guess not, so I'll probably have to get it balanced again. Too
bad there's no shops in my city that can do that.
/Peter
"Jerry Bransford" <jerrypb@***.net> wrote in message
news:Z8_%c.78798$yh.62304@fed1read05...
> If the drivetrain angles are indeed correct, it could be anything from a
bad
> u-joint to an out of balance driveshaft. Or tires, or pinion bearings,
> or... it's really hard to say.
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> news:chppfe$8ts$1@news.storm.ca...
> > So, what else could cause a vibration at higher road speeds?
> >
> > /Peter
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:ohZ%c.78797$yh.12931@fed1read05...
> >> No more than one degree on a TJ. You only use more when there are leaf
> >> springs because axle wrap is a bigger problem for them.
> >>
> >> Jerry
> >> --
> >> Jerry Bransford
> >> PP-ASEL N6TAY
> >> See the Geezer Jeep at
> >> http://members.***.net/jerrypb/
> >> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> >> news:chph57$5h7$1@news.storm.ca...
> >> > You bet. Actually, the pinion is 1 degree lower than the shaft to
cover
> >> > flexing of the rubber suspension link bushings while under cruising
> > load.
> >> > Maybe it should be more than 1 degree?
> >> >
> >> > /Peter
> >> >
> >> > ----- Original Message -----
> >> > From: "L.W. (ßill) ------ III" <----------@***.net>
> >> > Newsgroups: rec.autos.makers.jeep+******
> >> > Sent: Wednesday, September 08, 2004 10:39 PM
> >> > Subject: Re: Mysterious Driveline Vibration
> >> >
> >> >
> >> >> Hi Peter,
> >> >> Did you move the pinion angle up to point directly at the
> >> >> transfer
> >> >> yoke: http://www.4xshaft.com/driveline101.html
> >> >> God Bless America, ßill O|||||||O
> >> >> mailto:-------------------- http://www.----------.com/
> >> >>
> >> >> Peter Pontbriand wrote:
> >> >> >
> >> >> > I'm stumped. A while back my '02 TJ decided to start getting a
> >> >> > pretty
> >> > bad
> >> >> > vibration from about 65 miles per hour on up. It doesn't matter
what
> >> > gear I
> >> >> > am in or which set of tires I have on, its always related to road
> >> >> > speed.
> >> > If
> >> >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> >> > disappears.
> >> >> > That suggests to me a problem with the driveshaft, yet all the
> > ujoints
> >> > and
> >> >> > the centering ball are fine, no balance weights are missing, and
> >> >> > there's
> >> > no
> >> >> > sign of any sort of damage. The pinion yoke and transfer case
output
> >> > seem
> >> >> > fine as well, no discernable untoward movements there.
> >> >> >
> >> >> > What am I missing here? What could possibly be the source of this
> >> > vibration?
> >> >> >
> >> >> > /Peter
> >> >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
> >> >
> >> >
> >>
> >>
> >
> >
>
>
I missed. I guess not, so I'll probably have to get it balanced again. Too
bad there's no shops in my city that can do that.
/Peter
"Jerry Bransford" <jerrypb@***.net> wrote in message
news:Z8_%c.78798$yh.62304@fed1read05...
> If the drivetrain angles are indeed correct, it could be anything from a
bad
> u-joint to an out of balance driveshaft. Or tires, or pinion bearings,
> or... it's really hard to say.
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> news:chppfe$8ts$1@news.storm.ca...
> > So, what else could cause a vibration at higher road speeds?
> >
> > /Peter
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:ohZ%c.78797$yh.12931@fed1read05...
> >> No more than one degree on a TJ. You only use more when there are leaf
> >> springs because axle wrap is a bigger problem for them.
> >>
> >> Jerry
> >> --
> >> Jerry Bransford
> >> PP-ASEL N6TAY
> >> See the Geezer Jeep at
> >> http://members.***.net/jerrypb/
> >> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> >> news:chph57$5h7$1@news.storm.ca...
> >> > You bet. Actually, the pinion is 1 degree lower than the shaft to
cover
> >> > flexing of the rubber suspension link bushings while under cruising
> > load.
> >> > Maybe it should be more than 1 degree?
> >> >
> >> > /Peter
> >> >
> >> > ----- Original Message -----
> >> > From: "L.W. (ßill) ------ III" <----------@***.net>
> >> > Newsgroups: rec.autos.makers.jeep+******
> >> > Sent: Wednesday, September 08, 2004 10:39 PM
> >> > Subject: Re: Mysterious Driveline Vibration
> >> >
> >> >
> >> >> Hi Peter,
> >> >> Did you move the pinion angle up to point directly at the
> >> >> transfer
> >> >> yoke: http://www.4xshaft.com/driveline101.html
> >> >> God Bless America, ßill O|||||||O
> >> >> mailto:-------------------- http://www.----------.com/
> >> >>
> >> >> Peter Pontbriand wrote:
> >> >> >
> >> >> > I'm stumped. A while back my '02 TJ decided to start getting a
> >> >> > pretty
> >> > bad
> >> >> > vibration from about 65 miles per hour on up. It doesn't matter
what
> >> > gear I
> >> >> > am in or which set of tires I have on, its always related to road
> >> >> > speed.
> >> > If
> >> >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> >> > disappears.
> >> >> > That suggests to me a problem with the driveshaft, yet all the
> > ujoints
> >> > and
> >> >> > the centering ball are fine, no balance weights are missing, and
> >> >> > there's
> >> > no
> >> >> > sign of any sort of damage. The pinion yoke and transfer case
output
> >> > seem
> >> >> > fine as well, no discernable untoward movements there.
> >> >> >
> >> >> > What am I missing here? What could possibly be the source of this
> >> > vibration?
> >> >> >
> >> >> > /Peter
> >> >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
> >> >
> >> >
> >>
> >>
> >
> >
>
>
09-09-2004, 12:35 PM
#24
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
Okay, thanks, I just wanted to make sure there wasn't something obvious that
I missed. I guess not, so I'll probably have to get it balanced again. Too
bad there's no shops in my city that can do that.
/Peter
"Jerry Bransford" <jerrypb@***.net> wrote in message
news:Z8_%c.78798$yh.62304@fed1read05...
> If the drivetrain angles are indeed correct, it could be anything from a
bad
> u-joint to an out of balance driveshaft. Or tires, or pinion bearings,
> or... it's really hard to say.
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> news:chppfe$8ts$1@news.storm.ca...
> > So, what else could cause a vibration at higher road speeds?
> >
> > /Peter
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:ohZ%c.78797$yh.12931@fed1read05...
> >> No more than one degree on a TJ. You only use more when there are leaf
> >> springs because axle wrap is a bigger problem for them.
> >>
> >> Jerry
> >> --
> >> Jerry Bransford
> >> PP-ASEL N6TAY
> >> See the Geezer Jeep at
> >> http://members.***.net/jerrypb/
> >> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> >> news:chph57$5h7$1@news.storm.ca...
> >> > You bet. Actually, the pinion is 1 degree lower than the shaft to
cover
> >> > flexing of the rubber suspension link bushings while under cruising
> > load.
> >> > Maybe it should be more than 1 degree?
> >> >
> >> > /Peter
> >> >
> >> > ----- Original Message -----
> >> > From: "L.W. (ßill) ------ III" <----------@***.net>
> >> > Newsgroups: rec.autos.makers.jeep+******
> >> > Sent: Wednesday, September 08, 2004 10:39 PM
> >> > Subject: Re: Mysterious Driveline Vibration
> >> >
> >> >
> >> >> Hi Peter,
> >> >> Did you move the pinion angle up to point directly at the
> >> >> transfer
> >> >> yoke: http://www.4xshaft.com/driveline101.html
> >> >> God Bless America, ßill O|||||||O
> >> >> mailto:-------------------- http://www.----------.com/
> >> >>
> >> >> Peter Pontbriand wrote:
> >> >> >
> >> >> > I'm stumped. A while back my '02 TJ decided to start getting a
> >> >> > pretty
> >> > bad
> >> >> > vibration from about 65 miles per hour on up. It doesn't matter
what
> >> > gear I
> >> >> > am in or which set of tires I have on, its always related to road
> >> >> > speed.
> >> > If
> >> >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> >> > disappears.
> >> >> > That suggests to me a problem with the driveshaft, yet all the
> > ujoints
> >> > and
> >> >> > the centering ball are fine, no balance weights are missing, and
> >> >> > there's
> >> > no
> >> >> > sign of any sort of damage. The pinion yoke and transfer case
output
> >> > seem
> >> >> > fine as well, no discernable untoward movements there.
> >> >> >
> >> >> > What am I missing here? What could possibly be the source of this
> >> > vibration?
> >> >> >
> >> >> > /Peter
> >> >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
> >> >
> >> >
> >>
> >>
> >
> >
>
>
I missed. I guess not, so I'll probably have to get it balanced again. Too
bad there's no shops in my city that can do that.
/Peter
"Jerry Bransford" <jerrypb@***.net> wrote in message
news:Z8_%c.78798$yh.62304@fed1read05...
> If the drivetrain angles are indeed correct, it could be anything from a
bad
> u-joint to an out of balance driveshaft. Or tires, or pinion bearings,
> or... it's really hard to say.
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> news:chppfe$8ts$1@news.storm.ca...
> > So, what else could cause a vibration at higher road speeds?
> >
> > /Peter
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:ohZ%c.78797$yh.12931@fed1read05...
> >> No more than one degree on a TJ. You only use more when there are leaf
> >> springs because axle wrap is a bigger problem for them.
> >>
> >> Jerry
> >> --
> >> Jerry Bransford
> >> PP-ASEL N6TAY
> >> See the Geezer Jeep at
> >> http://members.***.net/jerrypb/
> >> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> >> news:chph57$5h7$1@news.storm.ca...
> >> > You bet. Actually, the pinion is 1 degree lower than the shaft to
cover
> >> > flexing of the rubber suspension link bushings while under cruising
> > load.
> >> > Maybe it should be more than 1 degree?
> >> >
> >> > /Peter
> >> >
> >> > ----- Original Message -----
> >> > From: "L.W. (ßill) ------ III" <----------@***.net>
> >> > Newsgroups: rec.autos.makers.jeep+******
> >> > Sent: Wednesday, September 08, 2004 10:39 PM
> >> > Subject: Re: Mysterious Driveline Vibration
> >> >
> >> >
> >> >> Hi Peter,
> >> >> Did you move the pinion angle up to point directly at the
> >> >> transfer
> >> >> yoke: http://www.4xshaft.com/driveline101.html
> >> >> God Bless America, ßill O|||||||O
> >> >> mailto:-------------------- http://www.----------.com/
> >> >>
> >> >> Peter Pontbriand wrote:
> >> >> >
> >> >> > I'm stumped. A while back my '02 TJ decided to start getting a
> >> >> > pretty
> >> > bad
> >> >> > vibration from about 65 miles per hour on up. It doesn't matter
what
> >> > gear I
> >> >> > am in or which set of tires I have on, its always related to road
> >> >> > speed.
> >> > If
> >> >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> >> > disappears.
> >> >> > That suggests to me a problem with the driveshaft, yet all the
> > ujoints
> >> > and
> >> >> > the centering ball are fine, no balance weights are missing, and
> >> >> > there's
> >> > no
> >> >> > sign of any sort of damage. The pinion yoke and transfer case
output
> >> > seem
> >> >> > fine as well, no discernable untoward movements there.
> >> >> >
> >> >> > What am I missing here? What could possibly be the source of this
> >> > vibration?
> >> >> >
> >> >> > /Peter
> >> >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
> >> >
> >> >
> >>
> >>
> >
> >
>
>
09-09-2004, 12:35 PM
#25
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
Okay, thanks, I just wanted to make sure there wasn't something obvious that
I missed. I guess not, so I'll probably have to get it balanced again. Too
bad there's no shops in my city that can do that.
/Peter
"Jerry Bransford" <jerrypb@***.net> wrote in message
news:Z8_%c.78798$yh.62304@fed1read05...
> If the drivetrain angles are indeed correct, it could be anything from a
bad
> u-joint to an out of balance driveshaft. Or tires, or pinion bearings,
> or... it's really hard to say.
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> news:chppfe$8ts$1@news.storm.ca...
> > So, what else could cause a vibration at higher road speeds?
> >
> > /Peter
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:ohZ%c.78797$yh.12931@fed1read05...
> >> No more than one degree on a TJ. You only use more when there are leaf
> >> springs because axle wrap is a bigger problem for them.
> >>
> >> Jerry
> >> --
> >> Jerry Bransford
> >> PP-ASEL N6TAY
> >> See the Geezer Jeep at
> >> http://members.***.net/jerrypb/
> >> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> >> news:chph57$5h7$1@news.storm.ca...
> >> > You bet. Actually, the pinion is 1 degree lower than the shaft to
cover
> >> > flexing of the rubber suspension link bushings while under cruising
> > load.
> >> > Maybe it should be more than 1 degree?
> >> >
> >> > /Peter
> >> >
> >> > ----- Original Message -----
> >> > From: "L.W. (ßill) ------ III" <----------@***.net>
> >> > Newsgroups: rec.autos.makers.jeep+******
> >> > Sent: Wednesday, September 08, 2004 10:39 PM
> >> > Subject: Re: Mysterious Driveline Vibration
> >> >
> >> >
> >> >> Hi Peter,
> >> >> Did you move the pinion angle up to point directly at the
> >> >> transfer
> >> >> yoke: http://www.4xshaft.com/driveline101.html
> >> >> God Bless America, ßill O|||||||O
> >> >> mailto:-------------------- http://www.----------.com/
> >> >>
> >> >> Peter Pontbriand wrote:
> >> >> >
> >> >> > I'm stumped. A while back my '02 TJ decided to start getting a
> >> >> > pretty
> >> > bad
> >> >> > vibration from about 65 miles per hour on up. It doesn't matter
what
> >> > gear I
> >> >> > am in or which set of tires I have on, its always related to road
> >> >> > speed.
> >> > If
> >> >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> >> > disappears.
> >> >> > That suggests to me a problem with the driveshaft, yet all the
> > ujoints
> >> > and
> >> >> > the centering ball are fine, no balance weights are missing, and
> >> >> > there's
> >> > no
> >> >> > sign of any sort of damage. The pinion yoke and transfer case
output
> >> > seem
> >> >> > fine as well, no discernable untoward movements there.
> >> >> >
> >> >> > What am I missing here? What could possibly be the source of this
> >> > vibration?
> >> >> >
> >> >> > /Peter
> >> >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
> >> >
> >> >
> >>
> >>
> >
> >
>
>
I missed. I guess not, so I'll probably have to get it balanced again. Too
bad there's no shops in my city that can do that.
/Peter
"Jerry Bransford" <jerrypb@***.net> wrote in message
news:Z8_%c.78798$yh.62304@fed1read05...
> If the drivetrain angles are indeed correct, it could be anything from a
bad
> u-joint to an out of balance driveshaft. Or tires, or pinion bearings,
> or... it's really hard to say.
>
> Jerry
> --
> Jerry Bransford
> PP-ASEL N6TAY
> See the Geezer Jeep at
> http://members.***.net/jerrypb/
> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> news:chppfe$8ts$1@news.storm.ca...
> > So, what else could cause a vibration at higher road speeds?
> >
> > /Peter
> >
> > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > news:ohZ%c.78797$yh.12931@fed1read05...
> >> No more than one degree on a TJ. You only use more when there are leaf
> >> springs because axle wrap is a bigger problem for them.
> >>
> >> Jerry
> >> --
> >> Jerry Bransford
> >> PP-ASEL N6TAY
> >> See the Geezer Jeep at
> >> http://members.***.net/jerrypb/
> >> "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> >> news:chph57$5h7$1@news.storm.ca...
> >> > You bet. Actually, the pinion is 1 degree lower than the shaft to
cover
> >> > flexing of the rubber suspension link bushings while under cruising
> > load.
> >> > Maybe it should be more than 1 degree?
> >> >
> >> > /Peter
> >> >
> >> > ----- Original Message -----
> >> > From: "L.W. (ßill) ------ III" <----------@***.net>
> >> > Newsgroups: rec.autos.makers.jeep+******
> >> > Sent: Wednesday, September 08, 2004 10:39 PM
> >> > Subject: Re: Mysterious Driveline Vibration
> >> >
> >> >
> >> >> Hi Peter,
> >> >> Did you move the pinion angle up to point directly at the
> >> >> transfer
> >> >> yoke: http://www.4xshaft.com/driveline101.html
> >> >> God Bless America, ßill O|||||||O
> >> >> mailto:-------------------- http://www.----------.com/
> >> >>
> >> >> Peter Pontbriand wrote:
> >> >> >
> >> >> > I'm stumped. A while back my '02 TJ decided to start getting a
> >> >> > pretty
> >> > bad
> >> >> > vibration from about 65 miles per hour on up. It doesn't matter
what
> >> > gear I
> >> >> > am in or which set of tires I have on, its always related to road
> >> >> > speed.
> >> > If
> >> >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> >> > disappears.
> >> >> > That suggests to me a problem with the driveshaft, yet all the
> > ujoints
> >> > and
> >> >> > the centering ball are fine, no balance weights are missing, and
> >> >> > there's
> >> > no
> >> >> > sign of any sort of damage. The pinion yoke and transfer case
output
> >> > seem
> >> >> > fine as well, no discernable untoward movements there.
> >> >> >
> >> >> > What am I missing here? What could possibly be the source of this
> >> > vibration?
> >> >> >
> >> >> > /Peter
> >> >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
> >> >
> >> >
> >>
> >>
> >
> >
>
>
09-09-2004, 01:17 PM
#26
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
It's recent? Different animal then I guess.
Have you given the joints a real close look? It's a double cardan isn't
it or is it a real 'CV' joint with ball bearings?
I find our organic mud destroys the 'heavy duty' non grease u-joints in
less than a year, are yours like that? If so then I would suspect a
dry/burned by the mud cap and bearings on one of the joints.
I test it with tires blocked in neutral so the shaft is floating and
look for the slightest play. 'Any' play will cause a vibe.
Good luck.
Mike
Peter Pontbriand wrote:
>
> It's a Tom Wood's CV shaft, and it hasn't been apart so the yokes are still
> in phase. It didn't used to vibrate, that started recently.
>
> /Peter
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:41406E5E.3A66D53E@sympatico.ca...
> > Could your driveshaft be out of sync? Are the u-joints at the ends
> > lined up the same? For instance, if the clamp on the u-joint ear is
> > rotated up in the front, is the rear joint also sitting with the ear
> > clamp up?
> >
> > If so, then my guess is the driveshaft is a bad one. There are shops
> > around that can balance them.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Peter Pontbriand wrote:
> > >
> > > So, what else could cause a vibration at higher road speeds?
> > >
> > > /Peter
> > >
> > > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > > news:ohZ%c.78797$yh.12931@fed1read05...
> > > > No more than one degree on a TJ. You only use more when there are
> leaf
> > > > springs because axle wrap is a bigger problem for them.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > PP-ASEL N6TAY
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > > "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> > > > news:chph57$5h7$1@news.storm.ca...
> > > > > You bet. Actually, the pinion is 1 degree lower than the shaft to
> cover
> > > > > flexing of the rubber suspension link bushings while under cruising
> > > load.
> > > > > Maybe it should be more than 1 degree?
> > > > >
> > > > > /Peter
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "L.W. (ßill) ------ III" <----------@***.net>
> > > > > Newsgroups: rec.autos.makers.jeep+******
> > > > > Sent: Wednesday, September 08, 2004 10:39 PM
> > > > > Subject: Re: Mysterious Driveline Vibration
> > > > >
> > > > >
> > > > >> Hi Peter,
> > > > >> Did you move the pinion angle up to point directly at the
> transfer
> > > > >> yoke: http://www.4xshaft.com/driveline101.html
> > > > >> God Bless America, ßill O|||||||O
> > > > >> mailto:-------------------- http://www.----------.com/
> > > > >>
> > > > >> Peter Pontbriand wrote:
> > > > >> >
> > > > >> > I'm stumped. A while back my '02 TJ decided to start getting a
> pretty
> > > > > bad
> > > > >> > vibration from about 65 miles per hour on up. It doesn't matter
> what
> > > > > gear I
> > > > >> > am in or which set of tires I have on, its always related to road
> > > > >> > speed.
> > > > > If
> > > > >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> > > > > disappears.
> > > > >> > That suggests to me a problem with the driveshaft, yet all the
> > > ujoints
> > > > > and
> > > > >> > the centering ball are fine, no balance weights are missing, and
> > > > >> > there's
> > > > > no
> > > > >> > sign of any sort of damage. The pinion yoke and transfer case
> output
> > > > > seem
> > > > >> > fine as well, no discernable untoward movements there.
> > > > >> >
> > > > >> > What am I missing here? What could possibly be the source of this
> > > > > vibration?
> > > > >> >
> > > > >> > /Peter
> > > > >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other
> things).
> > > > >
> > > > >
> > > >
> > > >
Have you given the joints a real close look? It's a double cardan isn't
it or is it a real 'CV' joint with ball bearings?
I find our organic mud destroys the 'heavy duty' non grease u-joints in
less than a year, are yours like that? If so then I would suspect a
dry/burned by the mud cap and bearings on one of the joints.
I test it with tires blocked in neutral so the shaft is floating and
look for the slightest play. 'Any' play will cause a vibe.
Good luck.
Mike
Peter Pontbriand wrote:
>
> It's a Tom Wood's CV shaft, and it hasn't been apart so the yokes are still
> in phase. It didn't used to vibrate, that started recently.
>
> /Peter
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:41406E5E.3A66D53E@sympatico.ca...
> > Could your driveshaft be out of sync? Are the u-joints at the ends
> > lined up the same? For instance, if the clamp on the u-joint ear is
> > rotated up in the front, is the rear joint also sitting with the ear
> > clamp up?
> >
> > If so, then my guess is the driveshaft is a bad one. There are shops
> > around that can balance them.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Peter Pontbriand wrote:
> > >
> > > So, what else could cause a vibration at higher road speeds?
> > >
> > > /Peter
> > >
> > > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > > news:ohZ%c.78797$yh.12931@fed1read05...
> > > > No more than one degree on a TJ. You only use more when there are
> leaf
> > > > springs because axle wrap is a bigger problem for them.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > PP-ASEL N6TAY
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > > "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> > > > news:chph57$5h7$1@news.storm.ca...
> > > > > You bet. Actually, the pinion is 1 degree lower than the shaft to
> cover
> > > > > flexing of the rubber suspension link bushings while under cruising
> > > load.
> > > > > Maybe it should be more than 1 degree?
> > > > >
> > > > > /Peter
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "L.W. (ßill) ------ III" <----------@***.net>
> > > > > Newsgroups: rec.autos.makers.jeep+******
> > > > > Sent: Wednesday, September 08, 2004 10:39 PM
> > > > > Subject: Re: Mysterious Driveline Vibration
> > > > >
> > > > >
> > > > >> Hi Peter,
> > > > >> Did you move the pinion angle up to point directly at the
> transfer
> > > > >> yoke: http://www.4xshaft.com/driveline101.html
> > > > >> God Bless America, ßill O|||||||O
> > > > >> mailto:-------------------- http://www.----------.com/
> > > > >>
> > > > >> Peter Pontbriand wrote:
> > > > >> >
> > > > >> > I'm stumped. A while back my '02 TJ decided to start getting a
> pretty
> > > > > bad
> > > > >> > vibration from about 65 miles per hour on up. It doesn't matter
> what
> > > > > gear I
> > > > >> > am in or which set of tires I have on, its always related to road
> > > > >> > speed.
> > > > > If
> > > > >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> > > > > disappears.
> > > > >> > That suggests to me a problem with the driveshaft, yet all the
> > > ujoints
> > > > > and
> > > > >> > the centering ball are fine, no balance weights are missing, and
> > > > >> > there's
> > > > > no
> > > > >> > sign of any sort of damage. The pinion yoke and transfer case
> output
> > > > > seem
> > > > >> > fine as well, no discernable untoward movements there.
> > > > >> >
> > > > >> > What am I missing here? What could possibly be the source of this
> > > > > vibration?
> > > > >> >
> > > > >> > /Peter
> > > > >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other
> things).
> > > > >
> > > > >
> > > >
> > > >
09-09-2004, 01:17 PM
#27
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
It's recent? Different animal then I guess.
Have you given the joints a real close look? It's a double cardan isn't
it or is it a real 'CV' joint with ball bearings?
I find our organic mud destroys the 'heavy duty' non grease u-joints in
less than a year, are yours like that? If so then I would suspect a
dry/burned by the mud cap and bearings on one of the joints.
I test it with tires blocked in neutral so the shaft is floating and
look for the slightest play. 'Any' play will cause a vibe.
Good luck.
Mike
Peter Pontbriand wrote:
>
> It's a Tom Wood's CV shaft, and it hasn't been apart so the yokes are still
> in phase. It didn't used to vibrate, that started recently.
>
> /Peter
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:41406E5E.3A66D53E@sympatico.ca...
> > Could your driveshaft be out of sync? Are the u-joints at the ends
> > lined up the same? For instance, if the clamp on the u-joint ear is
> > rotated up in the front, is the rear joint also sitting with the ear
> > clamp up?
> >
> > If so, then my guess is the driveshaft is a bad one. There are shops
> > around that can balance them.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Peter Pontbriand wrote:
> > >
> > > So, what else could cause a vibration at higher road speeds?
> > >
> > > /Peter
> > >
> > > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > > news:ohZ%c.78797$yh.12931@fed1read05...
> > > > No more than one degree on a TJ. You only use more when there are
> leaf
> > > > springs because axle wrap is a bigger problem for them.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > PP-ASEL N6TAY
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > > "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> > > > news:chph57$5h7$1@news.storm.ca...
> > > > > You bet. Actually, the pinion is 1 degree lower than the shaft to
> cover
> > > > > flexing of the rubber suspension link bushings while under cruising
> > > load.
> > > > > Maybe it should be more than 1 degree?
> > > > >
> > > > > /Peter
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "L.W. (ßill) ------ III" <----------@***.net>
> > > > > Newsgroups: rec.autos.makers.jeep+******
> > > > > Sent: Wednesday, September 08, 2004 10:39 PM
> > > > > Subject: Re: Mysterious Driveline Vibration
> > > > >
> > > > >
> > > > >> Hi Peter,
> > > > >> Did you move the pinion angle up to point directly at the
> transfer
> > > > >> yoke: http://www.4xshaft.com/driveline101.html
> > > > >> God Bless America, ßill O|||||||O
> > > > >> mailto:-------------------- http://www.----------.com/
> > > > >>
> > > > >> Peter Pontbriand wrote:
> > > > >> >
> > > > >> > I'm stumped. A while back my '02 TJ decided to start getting a
> pretty
> > > > > bad
> > > > >> > vibration from about 65 miles per hour on up. It doesn't matter
> what
> > > > > gear I
> > > > >> > am in or which set of tires I have on, its always related to road
> > > > >> > speed.
> > > > > If
> > > > >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> > > > > disappears.
> > > > >> > That suggests to me a problem with the driveshaft, yet all the
> > > ujoints
> > > > > and
> > > > >> > the centering ball are fine, no balance weights are missing, and
> > > > >> > there's
> > > > > no
> > > > >> > sign of any sort of damage. The pinion yoke and transfer case
> output
> > > > > seem
> > > > >> > fine as well, no discernable untoward movements there.
> > > > >> >
> > > > >> > What am I missing here? What could possibly be the source of this
> > > > > vibration?
> > > > >> >
> > > > >> > /Peter
> > > > >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other
> things).
> > > > >
> > > > >
> > > >
> > > >
Have you given the joints a real close look? It's a double cardan isn't
it or is it a real 'CV' joint with ball bearings?
I find our organic mud destroys the 'heavy duty' non grease u-joints in
less than a year, are yours like that? If so then I would suspect a
dry/burned by the mud cap and bearings on one of the joints.
I test it with tires blocked in neutral so the shaft is floating and
look for the slightest play. 'Any' play will cause a vibe.
Good luck.
Mike
Peter Pontbriand wrote:
>
> It's a Tom Wood's CV shaft, and it hasn't been apart so the yokes are still
> in phase. It didn't used to vibrate, that started recently.
>
> /Peter
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:41406E5E.3A66D53E@sympatico.ca...
> > Could your driveshaft be out of sync? Are the u-joints at the ends
> > lined up the same? For instance, if the clamp on the u-joint ear is
> > rotated up in the front, is the rear joint also sitting with the ear
> > clamp up?
> >
> > If so, then my guess is the driveshaft is a bad one. There are shops
> > around that can balance them.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Peter Pontbriand wrote:
> > >
> > > So, what else could cause a vibration at higher road speeds?
> > >
> > > /Peter
> > >
> > > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > > news:ohZ%c.78797$yh.12931@fed1read05...
> > > > No more than one degree on a TJ. You only use more when there are
> leaf
> > > > springs because axle wrap is a bigger problem for them.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > PP-ASEL N6TAY
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > > "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> > > > news:chph57$5h7$1@news.storm.ca...
> > > > > You bet. Actually, the pinion is 1 degree lower than the shaft to
> cover
> > > > > flexing of the rubber suspension link bushings while under cruising
> > > load.
> > > > > Maybe it should be more than 1 degree?
> > > > >
> > > > > /Peter
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "L.W. (ßill) ------ III" <----------@***.net>
> > > > > Newsgroups: rec.autos.makers.jeep+******
> > > > > Sent: Wednesday, September 08, 2004 10:39 PM
> > > > > Subject: Re: Mysterious Driveline Vibration
> > > > >
> > > > >
> > > > >> Hi Peter,
> > > > >> Did you move the pinion angle up to point directly at the
> transfer
> > > > >> yoke: http://www.4xshaft.com/driveline101.html
> > > > >> God Bless America, ßill O|||||||O
> > > > >> mailto:-------------------- http://www.----------.com/
> > > > >>
> > > > >> Peter Pontbriand wrote:
> > > > >> >
> > > > >> > I'm stumped. A while back my '02 TJ decided to start getting a
> pretty
> > > > > bad
> > > > >> > vibration from about 65 miles per hour on up. It doesn't matter
> what
> > > > > gear I
> > > > >> > am in or which set of tires I have on, its always related to road
> > > > >> > speed.
> > > > > If
> > > > >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> > > > > disappears.
> > > > >> > That suggests to me a problem with the driveshaft, yet all the
> > > ujoints
> > > > > and
> > > > >> > the centering ball are fine, no balance weights are missing, and
> > > > >> > there's
> > > > > no
> > > > >> > sign of any sort of damage. The pinion yoke and transfer case
> output
> > > > > seem
> > > > >> > fine as well, no discernable untoward movements there.
> > > > >> >
> > > > >> > What am I missing here? What could possibly be the source of this
> > > > > vibration?
> > > > >> >
> > > > >> > /Peter
> > > > >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other
> things).
> > > > >
> > > > >
> > > >
> > > >
09-09-2004, 01:17 PM
#28
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
It's recent? Different animal then I guess.
Have you given the joints a real close look? It's a double cardan isn't
it or is it a real 'CV' joint with ball bearings?
I find our organic mud destroys the 'heavy duty' non grease u-joints in
less than a year, are yours like that? If so then I would suspect a
dry/burned by the mud cap and bearings on one of the joints.
I test it with tires blocked in neutral so the shaft is floating and
look for the slightest play. 'Any' play will cause a vibe.
Good luck.
Mike
Peter Pontbriand wrote:
>
> It's a Tom Wood's CV shaft, and it hasn't been apart so the yokes are still
> in phase. It didn't used to vibrate, that started recently.
>
> /Peter
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:41406E5E.3A66D53E@sympatico.ca...
> > Could your driveshaft be out of sync? Are the u-joints at the ends
> > lined up the same? For instance, if the clamp on the u-joint ear is
> > rotated up in the front, is the rear joint also sitting with the ear
> > clamp up?
> >
> > If so, then my guess is the driveshaft is a bad one. There are shops
> > around that can balance them.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Peter Pontbriand wrote:
> > >
> > > So, what else could cause a vibration at higher road speeds?
> > >
> > > /Peter
> > >
> > > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > > news:ohZ%c.78797$yh.12931@fed1read05...
> > > > No more than one degree on a TJ. You only use more when there are
> leaf
> > > > springs because axle wrap is a bigger problem for them.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > PP-ASEL N6TAY
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > > "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> > > > news:chph57$5h7$1@news.storm.ca...
> > > > > You bet. Actually, the pinion is 1 degree lower than the shaft to
> cover
> > > > > flexing of the rubber suspension link bushings while under cruising
> > > load.
> > > > > Maybe it should be more than 1 degree?
> > > > >
> > > > > /Peter
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "L.W. (ßill) ------ III" <----------@***.net>
> > > > > Newsgroups: rec.autos.makers.jeep+******
> > > > > Sent: Wednesday, September 08, 2004 10:39 PM
> > > > > Subject: Re: Mysterious Driveline Vibration
> > > > >
> > > > >
> > > > >> Hi Peter,
> > > > >> Did you move the pinion angle up to point directly at the
> transfer
> > > > >> yoke: http://www.4xshaft.com/driveline101.html
> > > > >> God Bless America, ßill O|||||||O
> > > > >> mailto:-------------------- http://www.----------.com/
> > > > >>
> > > > >> Peter Pontbriand wrote:
> > > > >> >
> > > > >> > I'm stumped. A while back my '02 TJ decided to start getting a
> pretty
> > > > > bad
> > > > >> > vibration from about 65 miles per hour on up. It doesn't matter
> what
> > > > > gear I
> > > > >> > am in or which set of tires I have on, its always related to road
> > > > >> > speed.
> > > > > If
> > > > >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> > > > > disappears.
> > > > >> > That suggests to me a problem with the driveshaft, yet all the
> > > ujoints
> > > > > and
> > > > >> > the centering ball are fine, no balance weights are missing, and
> > > > >> > there's
> > > > > no
> > > > >> > sign of any sort of damage. The pinion yoke and transfer case
> output
> > > > > seem
> > > > >> > fine as well, no discernable untoward movements there.
> > > > >> >
> > > > >> > What am I missing here? What could possibly be the source of this
> > > > > vibration?
> > > > >> >
> > > > >> > /Peter
> > > > >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other
> things).
> > > > >
> > > > >
> > > >
> > > >
Have you given the joints a real close look? It's a double cardan isn't
it or is it a real 'CV' joint with ball bearings?
I find our organic mud destroys the 'heavy duty' non grease u-joints in
less than a year, are yours like that? If so then I would suspect a
dry/burned by the mud cap and bearings on one of the joints.
I test it with tires blocked in neutral so the shaft is floating and
look for the slightest play. 'Any' play will cause a vibe.
Good luck.
Mike
Peter Pontbriand wrote:
>
> It's a Tom Wood's CV shaft, and it hasn't been apart so the yokes are still
> in phase. It didn't used to vibrate, that started recently.
>
> /Peter
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:41406E5E.3A66D53E@sympatico.ca...
> > Could your driveshaft be out of sync? Are the u-joints at the ends
> > lined up the same? For instance, if the clamp on the u-joint ear is
> > rotated up in the front, is the rear joint also sitting with the ear
> > clamp up?
> >
> > If so, then my guess is the driveshaft is a bad one. There are shops
> > around that can balance them.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > Peter Pontbriand wrote:
> > >
> > > So, what else could cause a vibration at higher road speeds?
> > >
> > > /Peter
> > >
> > > "Jerry Bransford" <jerrypb@***.net> wrote in message
> > > news:ohZ%c.78797$yh.12931@fed1read05...
> > > > No more than one degree on a TJ. You only use more when there are
> leaf
> > > > springs because axle wrap is a bigger problem for them.
> > > >
> > > > Jerry
> > > > --
> > > > Jerry Bransford
> > > > PP-ASEL N6TAY
> > > > See the Geezer Jeep at
> > > > http://members.***.net/jerrypb/
> > > > "Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
> > > > news:chph57$5h7$1@news.storm.ca...
> > > > > You bet. Actually, the pinion is 1 degree lower than the shaft to
> cover
> > > > > flexing of the rubber suspension link bushings while under cruising
> > > load.
> > > > > Maybe it should be more than 1 degree?
> > > > >
> > > > > /Peter
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "L.W. (ßill) ------ III" <----------@***.net>
> > > > > Newsgroups: rec.autos.makers.jeep+******
> > > > > Sent: Wednesday, September 08, 2004 10:39 PM
> > > > > Subject: Re: Mysterious Driveline Vibration
> > > > >
> > > > >
> > > > >> Hi Peter,
> > > > >> Did you move the pinion angle up to point directly at the
> transfer
> > > > >> yoke: http://www.4xshaft.com/driveline101.html
> > > > >> God Bless America, ßill O|||||||O
> > > > >> mailto:-------------------- http://www.----------.com/
> > > > >>
> > > > >> Peter Pontbriand wrote:
> > > > >> >
> > > > >> > I'm stumped. A while back my '02 TJ decided to start getting a
> pretty
> > > > > bad
> > > > >> > vibration from about 65 miles per hour on up. It doesn't matter
> what
> > > > > gear I
> > > > >> > am in or which set of tires I have on, its always related to road
> > > > >> > speed.
> > > > > If
> > > > >> > I remove the rear driveshaft and drive in 4-hi, the vibration
> > > > > disappears.
> > > > >> > That suggests to me a problem with the driveshaft, yet all the
> > > ujoints
> > > > > and
> > > > >> > the centering ball are fine, no balance weights are missing, and
> > > > >> > there's
> > > > > no
> > > > >> > sign of any sort of damage. The pinion yoke and transfer case
> output
> > > > > seem
> > > > >> > fine as well, no discernable untoward movements there.
> > > > >> >
> > > > >> > What am I missing here? What could possibly be the source of this
> > > > > vibration?
> > > > >> >
> > > > >> > /Peter
> > > > >> > '02 TJ with AA SYE and Tom Woods drive shaft (among other
> things).
> > > > >
> > > > >
> > > >
> > > >
09-09-2004, 01:20 PM
#29
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
Just to double check, like Mike, guessed, that your joints aren't
ninety degrees out of time, they should look like:
http://www.4x4wire.com/jeep/reviews/...iveshaftin.jpg If you're
using your old shaft, shorten to except the constant velocity, and the
weights you see may not be on. My shafts after they were chucked up and
turned came in perfect, but those of my friend that weren't as luck put
a couple of ounces of Automatic Transmission Fluid inside. Works like
your washing machine's centrifugal force finds a level.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Peter Pontbriand wrote:
>
> Okay, thanks, I just wanted to make sure there wasn't something obvious that
> I missed. I guess not, so I'll probably have to get it balanced again. Too
> bad there's no shops in my city that can do that.
>
> /Peter
ninety degrees out of time, they should look like:
http://www.4x4wire.com/jeep/reviews/...iveshaftin.jpg If you're
using your old shaft, shorten to except the constant velocity, and the
weights you see may not be on. My shafts after they were chucked up and
turned came in perfect, but those of my friend that weren't as luck put
a couple of ounces of Automatic Transmission Fluid inside. Works like
your washing machine's centrifugal force finds a level.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Peter Pontbriand wrote:
>
> Okay, thanks, I just wanted to make sure there wasn't something obvious that
> I missed. I guess not, so I'll probably have to get it balanced again. Too
> bad there's no shops in my city that can do that.
>
> /Peter
09-09-2004, 01:20 PM
#30
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
Just to double check, like Mike, guessed, that your joints aren't
ninety degrees out of time, they should look like:
http://www.4x4wire.com/jeep/reviews/...iveshaftin.jpg If you're
using your old shaft, shorten to except the constant velocity, and the
weights you see may not be on. My shafts after they were chucked up and
turned came in perfect, but those of my friend that weren't as luck put
a couple of ounces of Automatic Transmission Fluid inside. Works like
your washing machine's centrifugal force finds a level.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Peter Pontbriand wrote:
>
> Okay, thanks, I just wanted to make sure there wasn't something obvious that
> I missed. I guess not, so I'll probably have to get it balanced again. Too
> bad there's no shops in my city that can do that.
>
> /Peter
ninety degrees out of time, they should look like:
http://www.4x4wire.com/jeep/reviews/...iveshaftin.jpg If you're
using your old shaft, shorten to except the constant velocity, and the
weights you see may not be on. My shafts after they were chucked up and
turned came in perfect, but those of my friend that weren't as luck put
a couple of ounces of Automatic Transmission Fluid inside. Works like
your washing machine's centrifugal force finds a level.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/
Peter Pontbriand wrote:
>
> Okay, thanks, I just wanted to make sure there wasn't something obvious that
> I missed. I guess not, so I'll probably have to get it balanced again. Too
> bad there's no shops in my city that can do that.
>
> /Peter