Mysterious Driveline Vibration
09-09-2004, 10:02 PM
#51
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
I was going to mention that. A front axle u-joint will sure act like
that, so can a driveshaft one.
The trip was pretty good. Snowboardripper, Jo and Steve showed up. One
other came but couldn't get across a big washout solo to get to us. We
found a pretty insane trail that got really technical fast. Winches,
jacks and ****** blocks. I only cracked my frame, snapped the rad in
half and punched out a gas line...
I will get the photos done and make a proper trip report soon unless
someone else makes it.
Mike
Peter Pontbriand wrote:
>
> Will do.
>
> I was just thinking ... is it possible that it is the front shaft that
> vibrates when running in 2Hi, but doesn't vibrate when under load, i.e. when
> the rear shaft is removed?
>
> By the way, how was last week's bush run / camping?
>
> /Peter
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:4140DF5A.F150FA69@sympatico.ca...
> > If it was hit hard enough to shear the grease fitting, well.....
> >
> > I think I would jack up the rear pumpkin, put it in gear and run it like
> > Bill suggests to check for round.
> >
> > Mike
> >
> > "L.W.(ßill) ------ III" wrote:
> > >
> > > I would say it's possible to bend a drive shaft, on a mud hill,
> > > without causing anything noticeable like scraping off the paint. If you
> > > can safely have it running in gear, hold a chalk up to it and see if
> > > it's out of round, like you would test for wheel/axle damage.
> > > God Bless America, ßill O|||||||O
> > > mailto:-------------------- http://www.----------.com/
> > >
> > > Peter Pontbriand wrote:
> > > >
> > > > That's exactly what they look like, as shipped by Tom Wood's.
> > > >
> > > > Nope, as mentioned previously this is a Tom Wood's shaft, with all the
> > > > welded-on balance weights it was shipped with still in place. I'm
> pretty
> > > > sure I'd see evidence of broken welds if one of the weights was gone.
> I did
> > > > manage to knock the grease fitting for the slip member off a while
> back and
> > > > had to fit a new one. I find it hard to believe that that would cause
> this
> > > > vibration though.
> > > >
> > > > Well now, that's an interesting idea. What does one do, drill a hole
> in the
> > > > tube, toss in a couple shot glasses of ATF, and weld it up again?
> Would this
> > > > work in a shaft with only two or three inches of tube?
> > > >
> > > > /Peter
that, so can a driveshaft one.
The trip was pretty good. Snowboardripper, Jo and Steve showed up. One
other came but couldn't get across a big washout solo to get to us. We
found a pretty insane trail that got really technical fast. Winches,
jacks and ****** blocks. I only cracked my frame, snapped the rad in
half and punched out a gas line...
I will get the photos done and make a proper trip report soon unless
someone else makes it.
Mike
Peter Pontbriand wrote:
>
> Will do.
>
> I was just thinking ... is it possible that it is the front shaft that
> vibrates when running in 2Hi, but doesn't vibrate when under load, i.e. when
> the rear shaft is removed?
>
> By the way, how was last week's bush run / camping?
>
> /Peter
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:4140DF5A.F150FA69@sympatico.ca...
> > If it was hit hard enough to shear the grease fitting, well.....
> >
> > I think I would jack up the rear pumpkin, put it in gear and run it like
> > Bill suggests to check for round.
> >
> > Mike
> >
> > "L.W.(ßill) ------ III" wrote:
> > >
> > > I would say it's possible to bend a drive shaft, on a mud hill,
> > > without causing anything noticeable like scraping off the paint. If you
> > > can safely have it running in gear, hold a chalk up to it and see if
> > > it's out of round, like you would test for wheel/axle damage.
> > > God Bless America, ßill O|||||||O
> > > mailto:-------------------- http://www.----------.com/
> > >
> > > Peter Pontbriand wrote:
> > > >
> > > > That's exactly what they look like, as shipped by Tom Wood's.
> > > >
> > > > Nope, as mentioned previously this is a Tom Wood's shaft, with all the
> > > > welded-on balance weights it was shipped with still in place. I'm
> pretty
> > > > sure I'd see evidence of broken welds if one of the weights was gone.
> I did
> > > > manage to knock the grease fitting for the slip member off a while
> back and
> > > > had to fit a new one. I find it hard to believe that that would cause
> this
> > > > vibration though.
> > > >
> > > > Well now, that's an interesting idea. What does one do, drill a hole
> in the
> > > > tube, toss in a couple shot glasses of ATF, and weld it up again?
> Would this
> > > > work in a shaft with only two or three inches of tube?
> > > >
> > > > /Peter
09-09-2004, 10:02 PM
#52
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
I was going to mention that. A front axle u-joint will sure act like
that, so can a driveshaft one.
The trip was pretty good. Snowboardripper, Jo and Steve showed up. One
other came but couldn't get across a big washout solo to get to us. We
found a pretty insane trail that got really technical fast. Winches,
jacks and ****** blocks. I only cracked my frame, snapped the rad in
half and punched out a gas line...
I will get the photos done and make a proper trip report soon unless
someone else makes it.
Mike
Peter Pontbriand wrote:
>
> Will do.
>
> I was just thinking ... is it possible that it is the front shaft that
> vibrates when running in 2Hi, but doesn't vibrate when under load, i.e. when
> the rear shaft is removed?
>
> By the way, how was last week's bush run / camping?
>
> /Peter
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:4140DF5A.F150FA69@sympatico.ca...
> > If it was hit hard enough to shear the grease fitting, well.....
> >
> > I think I would jack up the rear pumpkin, put it in gear and run it like
> > Bill suggests to check for round.
> >
> > Mike
> >
> > "L.W.(ßill) ------ III" wrote:
> > >
> > > I would say it's possible to bend a drive shaft, on a mud hill,
> > > without causing anything noticeable like scraping off the paint. If you
> > > can safely have it running in gear, hold a chalk up to it and see if
> > > it's out of round, like you would test for wheel/axle damage.
> > > God Bless America, ßill O|||||||O
> > > mailto:-------------------- http://www.----------.com/
> > >
> > > Peter Pontbriand wrote:
> > > >
> > > > That's exactly what they look like, as shipped by Tom Wood's.
> > > >
> > > > Nope, as mentioned previously this is a Tom Wood's shaft, with all the
> > > > welded-on balance weights it was shipped with still in place. I'm
> pretty
> > > > sure I'd see evidence of broken welds if one of the weights was gone.
> I did
> > > > manage to knock the grease fitting for the slip member off a while
> back and
> > > > had to fit a new one. I find it hard to believe that that would cause
> this
> > > > vibration though.
> > > >
> > > > Well now, that's an interesting idea. What does one do, drill a hole
> in the
> > > > tube, toss in a couple shot glasses of ATF, and weld it up again?
> Would this
> > > > work in a shaft with only two or three inches of tube?
> > > >
> > > > /Peter
that, so can a driveshaft one.
The trip was pretty good. Snowboardripper, Jo and Steve showed up. One
other came but couldn't get across a big washout solo to get to us. We
found a pretty insane trail that got really technical fast. Winches,
jacks and ****** blocks. I only cracked my frame, snapped the rad in
half and punched out a gas line...
I will get the photos done and make a proper trip report soon unless
someone else makes it.
Mike
Peter Pontbriand wrote:
>
> Will do.
>
> I was just thinking ... is it possible that it is the front shaft that
> vibrates when running in 2Hi, but doesn't vibrate when under load, i.e. when
> the rear shaft is removed?
>
> By the way, how was last week's bush run / camping?
>
> /Peter
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:4140DF5A.F150FA69@sympatico.ca...
> > If it was hit hard enough to shear the grease fitting, well.....
> >
> > I think I would jack up the rear pumpkin, put it in gear and run it like
> > Bill suggests to check for round.
> >
> > Mike
> >
> > "L.W.(ßill) ------ III" wrote:
> > >
> > > I would say it's possible to bend a drive shaft, on a mud hill,
> > > without causing anything noticeable like scraping off the paint. If you
> > > can safely have it running in gear, hold a chalk up to it and see if
> > > it's out of round, like you would test for wheel/axle damage.
> > > God Bless America, ßill O|||||||O
> > > mailto:-------------------- http://www.----------.com/
> > >
> > > Peter Pontbriand wrote:
> > > >
> > > > That's exactly what they look like, as shipped by Tom Wood's.
> > > >
> > > > Nope, as mentioned previously this is a Tom Wood's shaft, with all the
> > > > welded-on balance weights it was shipped with still in place. I'm
> pretty
> > > > sure I'd see evidence of broken welds if one of the weights was gone.
> I did
> > > > manage to knock the grease fitting for the slip member off a while
> back and
> > > > had to fit a new one. I find it hard to believe that that would cause
> this
> > > > vibration though.
> > > >
> > > > Well now, that's an interesting idea. What does one do, drill a hole
> in the
> > > > tube, toss in a couple shot glasses of ATF, and weld it up again?
> Would this
> > > > work in a shaft with only two or three inches of tube?
> > > >
> > > > /Peter
09-11-2004, 11:51 AM
#53
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
> > I was just thinking ... is it possible that it is the front shaft that
> > vibrates when running in 2Hi, but doesn't vibrate when under load, i.e.
when
> > the rear shaft is removed?
I just spent a bit of time under the jeep, checking into the things you guys
mentioned. The rear shaft sure doesn't look bent, I used the same trick I
use when truing bicycle wheels on it, slowly bringing a chunk of oil pastel
to the spinning shaft, and it made a complete, even circle agains both the
slip member and the tube.
With the transfer case in neutral and the rear wheels in the air, the rear
drive shaft doesn't wiggle. However, if I jerk it straight down with a
significant portion of my weight, I seem to hear/feel the faintest of clicks
but can't see any movement. I can't really tell whether it's coming from the
double carden area of the shaft or from the transfer case tail cone, but my
money is on it being the bearings in the transfer case. However, what I
don't know is whether this is normal or not. It is very slight indeed.
Moving to the front of the jeep, I did notice quite a bit of play in the
slip member of the front drive shaft. There is a visible movement, perhaps
as much as a couple of millimeters. I'm going to remove the front shaft
again and see what happens. I'll keep you posted.
/Peter
> > vibrates when running in 2Hi, but doesn't vibrate when under load, i.e.
when
> > the rear shaft is removed?
I just spent a bit of time under the jeep, checking into the things you guys
mentioned. The rear shaft sure doesn't look bent, I used the same trick I
use when truing bicycle wheels on it, slowly bringing a chunk of oil pastel
to the spinning shaft, and it made a complete, even circle agains both the
slip member and the tube.
With the transfer case in neutral and the rear wheels in the air, the rear
drive shaft doesn't wiggle. However, if I jerk it straight down with a
significant portion of my weight, I seem to hear/feel the faintest of clicks
but can't see any movement. I can't really tell whether it's coming from the
double carden area of the shaft or from the transfer case tail cone, but my
money is on it being the bearings in the transfer case. However, what I
don't know is whether this is normal or not. It is very slight indeed.
Moving to the front of the jeep, I did notice quite a bit of play in the
slip member of the front drive shaft. There is a visible movement, perhaps
as much as a couple of millimeters. I'm going to remove the front shaft
again and see what happens. I'll keep you posted.
/Peter
09-11-2004, 11:51 AM
#54
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
> > I was just thinking ... is it possible that it is the front shaft that
> > vibrates when running in 2Hi, but doesn't vibrate when under load, i.e.
when
> > the rear shaft is removed?
I just spent a bit of time under the jeep, checking into the things you guys
mentioned. The rear shaft sure doesn't look bent, I used the same trick I
use when truing bicycle wheels on it, slowly bringing a chunk of oil pastel
to the spinning shaft, and it made a complete, even circle agains both the
slip member and the tube.
With the transfer case in neutral and the rear wheels in the air, the rear
drive shaft doesn't wiggle. However, if I jerk it straight down with a
significant portion of my weight, I seem to hear/feel the faintest of clicks
but can't see any movement. I can't really tell whether it's coming from the
double carden area of the shaft or from the transfer case tail cone, but my
money is on it being the bearings in the transfer case. However, what I
don't know is whether this is normal or not. It is very slight indeed.
Moving to the front of the jeep, I did notice quite a bit of play in the
slip member of the front drive shaft. There is a visible movement, perhaps
as much as a couple of millimeters. I'm going to remove the front shaft
again and see what happens. I'll keep you posted.
/Peter
> > vibrates when running in 2Hi, but doesn't vibrate when under load, i.e.
when
> > the rear shaft is removed?
I just spent a bit of time under the jeep, checking into the things you guys
mentioned. The rear shaft sure doesn't look bent, I used the same trick I
use when truing bicycle wheels on it, slowly bringing a chunk of oil pastel
to the spinning shaft, and it made a complete, even circle agains both the
slip member and the tube.
With the transfer case in neutral and the rear wheels in the air, the rear
drive shaft doesn't wiggle. However, if I jerk it straight down with a
significant portion of my weight, I seem to hear/feel the faintest of clicks
but can't see any movement. I can't really tell whether it's coming from the
double carden area of the shaft or from the transfer case tail cone, but my
money is on it being the bearings in the transfer case. However, what I
don't know is whether this is normal or not. It is very slight indeed.
Moving to the front of the jeep, I did notice quite a bit of play in the
slip member of the front drive shaft. There is a visible movement, perhaps
as much as a couple of millimeters. I'm going to remove the front shaft
again and see what happens. I'll keep you posted.
/Peter
09-11-2004, 11:51 AM
#55
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
> > I was just thinking ... is it possible that it is the front shaft that
> > vibrates when running in 2Hi, but doesn't vibrate when under load, i.e.
when
> > the rear shaft is removed?
I just spent a bit of time under the jeep, checking into the things you guys
mentioned. The rear shaft sure doesn't look bent, I used the same trick I
use when truing bicycle wheels on it, slowly bringing a chunk of oil pastel
to the spinning shaft, and it made a complete, even circle agains both the
slip member and the tube.
With the transfer case in neutral and the rear wheels in the air, the rear
drive shaft doesn't wiggle. However, if I jerk it straight down with a
significant portion of my weight, I seem to hear/feel the faintest of clicks
but can't see any movement. I can't really tell whether it's coming from the
double carden area of the shaft or from the transfer case tail cone, but my
money is on it being the bearings in the transfer case. However, what I
don't know is whether this is normal or not. It is very slight indeed.
Moving to the front of the jeep, I did notice quite a bit of play in the
slip member of the front drive shaft. There is a visible movement, perhaps
as much as a couple of millimeters. I'm going to remove the front shaft
again and see what happens. I'll keep you posted.
/Peter
> > vibrates when running in 2Hi, but doesn't vibrate when under load, i.e.
when
> > the rear shaft is removed?
I just spent a bit of time under the jeep, checking into the things you guys
mentioned. The rear shaft sure doesn't look bent, I used the same trick I
use when truing bicycle wheels on it, slowly bringing a chunk of oil pastel
to the spinning shaft, and it made a complete, even circle agains both the
slip member and the tube.
With the transfer case in neutral and the rear wheels in the air, the rear
drive shaft doesn't wiggle. However, if I jerk it straight down with a
significant portion of my weight, I seem to hear/feel the faintest of clicks
but can't see any movement. I can't really tell whether it's coming from the
double carden area of the shaft or from the transfer case tail cone, but my
money is on it being the bearings in the transfer case. However, what I
don't know is whether this is normal or not. It is very slight indeed.
Moving to the front of the jeep, I did notice quite a bit of play in the
slip member of the front drive shaft. There is a visible movement, perhaps
as much as a couple of millimeters. I'm going to remove the front shaft
again and see what happens. I'll keep you posted.
/Peter
09-11-2004, 03:41 PM
#56
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
i have bent front and rear factory drive shaft , and they replace them no
problem, they said it is happening alot.
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chocs3$ir3$1@news.storm.ca...
> I'm stumped. A while back my '02 TJ decided to start getting a pretty bad
> vibration from about 65 miles per hour on up. It doesn't matter what gear
I
> am in or which set of tires I have on, its always related to road speed.
If
> I remove the rear driveshaft and drive in 4-hi, the vibration disappears.
> That suggests to me a problem with the driveshaft, yet all the ujoints and
> the centering ball are fine, no balance weights are missing, and there's
no
> sign of any sort of damage. The pinion yoke and transfer case output seem
> fine as well, no discernable untoward movements there.
>
> What am I missing here? What could possibly be the source of this
vibration?
>
> /Peter
> '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
>
>
problem, they said it is happening alot.
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chocs3$ir3$1@news.storm.ca...
> I'm stumped. A while back my '02 TJ decided to start getting a pretty bad
> vibration from about 65 miles per hour on up. It doesn't matter what gear
I
> am in or which set of tires I have on, its always related to road speed.
If
> I remove the rear driveshaft and drive in 4-hi, the vibration disappears.
> That suggests to me a problem with the driveshaft, yet all the ujoints and
> the centering ball are fine, no balance weights are missing, and there's
no
> sign of any sort of damage. The pinion yoke and transfer case output seem
> fine as well, no discernable untoward movements there.
>
> What am I missing here? What could possibly be the source of this
vibration?
>
> /Peter
> '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
>
>
09-11-2004, 03:41 PM
#57
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
i have bent front and rear factory drive shaft , and they replace them no
problem, they said it is happening alot.
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chocs3$ir3$1@news.storm.ca...
> I'm stumped. A while back my '02 TJ decided to start getting a pretty bad
> vibration from about 65 miles per hour on up. It doesn't matter what gear
I
> am in or which set of tires I have on, its always related to road speed.
If
> I remove the rear driveshaft and drive in 4-hi, the vibration disappears.
> That suggests to me a problem with the driveshaft, yet all the ujoints and
> the centering ball are fine, no balance weights are missing, and there's
no
> sign of any sort of damage. The pinion yoke and transfer case output seem
> fine as well, no discernable untoward movements there.
>
> What am I missing here? What could possibly be the source of this
vibration?
>
> /Peter
> '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
>
>
problem, they said it is happening alot.
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chocs3$ir3$1@news.storm.ca...
> I'm stumped. A while back my '02 TJ decided to start getting a pretty bad
> vibration from about 65 miles per hour on up. It doesn't matter what gear
I
> am in or which set of tires I have on, its always related to road speed.
If
> I remove the rear driveshaft and drive in 4-hi, the vibration disappears.
> That suggests to me a problem with the driveshaft, yet all the ujoints and
> the centering ball are fine, no balance weights are missing, and there's
no
> sign of any sort of damage. The pinion yoke and transfer case output seem
> fine as well, no discernable untoward movements there.
>
> What am I missing here? What could possibly be the source of this
vibration?
>
> /Peter
> '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
>
>
09-11-2004, 03:41 PM
#58
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
i have bent front and rear factory drive shaft , and they replace them no
problem, they said it is happening alot.
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chocs3$ir3$1@news.storm.ca...
> I'm stumped. A while back my '02 TJ decided to start getting a pretty bad
> vibration from about 65 miles per hour on up. It doesn't matter what gear
I
> am in or which set of tires I have on, its always related to road speed.
If
> I remove the rear driveshaft and drive in 4-hi, the vibration disappears.
> That suggests to me a problem with the driveshaft, yet all the ujoints and
> the centering ball are fine, no balance weights are missing, and there's
no
> sign of any sort of damage. The pinion yoke and transfer case output seem
> fine as well, no discernable untoward movements there.
>
> What am I missing here? What could possibly be the source of this
vibration?
>
> /Peter
> '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
>
>
problem, they said it is happening alot.
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chocs3$ir3$1@news.storm.ca...
> I'm stumped. A while back my '02 TJ decided to start getting a pretty bad
> vibration from about 65 miles per hour on up. It doesn't matter what gear
I
> am in or which set of tires I have on, its always related to road speed.
If
> I remove the rear driveshaft and drive in 4-hi, the vibration disappears.
> That suggests to me a problem with the driveshaft, yet all the ujoints and
> the centering ball are fine, no balance weights are missing, and there's
no
> sign of any sort of damage. The pinion yoke and transfer case output seem
> fine as well, no discernable untoward movements there.
>
> What am I missing here? What could possibly be the source of this
vibration?
>
> /Peter
> '02 TJ with AA SYE and Tom Woods drive shaft (among other things).
>
>
09-15-2004, 11:46 PM
#59
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
Just in case anybody is wondering what the results were, it seems that the
problem was the _front_ drive shaft's slip member. Pretty much all vestiges
of the factory lube were gone. I greased it up as well as I could , and that
eliminated both the play in the shaft and the mysterious vibrations.
All is good.
/Peter
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chv6pb$d85$1@news.storm.ca...
> > > I was just thinking ... is it possible that it is the front shaft that
> > > vibrates when running in 2Hi, but doesn't vibrate when under load,
i.e.
> when
> > > the rear shaft is removed?
>
> I just spent a bit of time under the jeep, checking into the things you
guys
> mentioned. The rear shaft sure doesn't look bent, I used the same trick I
> use when truing bicycle wheels on it, slowly bringing a chunk of oil
pastel
> to the spinning shaft, and it made a complete, even circle agains both the
> slip member and the tube.
>
> With the transfer case in neutral and the rear wheels in the air, the rear
> drive shaft doesn't wiggle. However, if I jerk it straight down with a
> significant portion of my weight, I seem to hear/feel the faintest of
clicks
> but can't see any movement. I can't really tell whether it's coming from
the
> double carden area of the shaft or from the transfer case tail cone, but
my
> money is on it being the bearings in the transfer case. However, what I
> don't know is whether this is normal or not. It is very slight indeed.
>
> Moving to the front of the jeep, I did notice quite a bit of play in the
> slip member of the front drive shaft. There is a visible movement, perhaps
> as much as a couple of millimeters. I'm going to remove the front shaft
> again and see what happens. I'll keep you posted.
>
> /Peter
>
>
problem was the _front_ drive shaft's slip member. Pretty much all vestiges
of the factory lube were gone. I greased it up as well as I could , and that
eliminated both the play in the shaft and the mysterious vibrations.
All is good.
/Peter
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chv6pb$d85$1@news.storm.ca...
> > > I was just thinking ... is it possible that it is the front shaft that
> > > vibrates when running in 2Hi, but doesn't vibrate when under load,
i.e.
> when
> > > the rear shaft is removed?
>
> I just spent a bit of time under the jeep, checking into the things you
guys
> mentioned. The rear shaft sure doesn't look bent, I used the same trick I
> use when truing bicycle wheels on it, slowly bringing a chunk of oil
pastel
> to the spinning shaft, and it made a complete, even circle agains both the
> slip member and the tube.
>
> With the transfer case in neutral and the rear wheels in the air, the rear
> drive shaft doesn't wiggle. However, if I jerk it straight down with a
> significant portion of my weight, I seem to hear/feel the faintest of
clicks
> but can't see any movement. I can't really tell whether it's coming from
the
> double carden area of the shaft or from the transfer case tail cone, but
my
> money is on it being the bearings in the transfer case. However, what I
> don't know is whether this is normal or not. It is very slight indeed.
>
> Moving to the front of the jeep, I did notice quite a bit of play in the
> slip member of the front drive shaft. There is a visible movement, perhaps
> as much as a couple of millimeters. I'm going to remove the front shaft
> again and see what happens. I'll keep you posted.
>
> /Peter
>
>
09-15-2004, 11:46 PM
#60
Guest
Posts: n/a
Re: Mysterious Driveline Vibration
Just in case anybody is wondering what the results were, it seems that the
problem was the _front_ drive shaft's slip member. Pretty much all vestiges
of the factory lube were gone. I greased it up as well as I could , and that
eliminated both the play in the shaft and the mysterious vibrations.
All is good.
/Peter
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chv6pb$d85$1@news.storm.ca...
> > > I was just thinking ... is it possible that it is the front shaft that
> > > vibrates when running in 2Hi, but doesn't vibrate when under load,
i.e.
> when
> > > the rear shaft is removed?
>
> I just spent a bit of time under the jeep, checking into the things you
guys
> mentioned. The rear shaft sure doesn't look bent, I used the same trick I
> use when truing bicycle wheels on it, slowly bringing a chunk of oil
pastel
> to the spinning shaft, and it made a complete, even circle agains both the
> slip member and the tube.
>
> With the transfer case in neutral and the rear wheels in the air, the rear
> drive shaft doesn't wiggle. However, if I jerk it straight down with a
> significant portion of my weight, I seem to hear/feel the faintest of
clicks
> but can't see any movement. I can't really tell whether it's coming from
the
> double carden area of the shaft or from the transfer case tail cone, but
my
> money is on it being the bearings in the transfer case. However, what I
> don't know is whether this is normal or not. It is very slight indeed.
>
> Moving to the front of the jeep, I did notice quite a bit of play in the
> slip member of the front drive shaft. There is a visible movement, perhaps
> as much as a couple of millimeters. I'm going to remove the front shaft
> again and see what happens. I'll keep you posted.
>
> /Peter
>
>
problem was the _front_ drive shaft's slip member. Pretty much all vestiges
of the factory lube were gone. I greased it up as well as I could , and that
eliminated both the play in the shaft and the mysterious vibrations.
All is good.
/Peter
"Peter Pontbriand" <sprocket@storm.ca.remove.me> wrote in message
news:chv6pb$d85$1@news.storm.ca...
> > > I was just thinking ... is it possible that it is the front shaft that
> > > vibrates when running in 2Hi, but doesn't vibrate when under load,
i.e.
> when
> > > the rear shaft is removed?
>
> I just spent a bit of time under the jeep, checking into the things you
guys
> mentioned. The rear shaft sure doesn't look bent, I used the same trick I
> use when truing bicycle wheels on it, slowly bringing a chunk of oil
pastel
> to the spinning shaft, and it made a complete, even circle agains both the
> slip member and the tube.
>
> With the transfer case in neutral and the rear wheels in the air, the rear
> drive shaft doesn't wiggle. However, if I jerk it straight down with a
> significant portion of my weight, I seem to hear/feel the faintest of
clicks
> but can't see any movement. I can't really tell whether it's coming from
the
> double carden area of the shaft or from the transfer case tail cone, but
my
> money is on it being the bearings in the transfer case. However, what I
> don't know is whether this is normal or not. It is very slight indeed.
>
> Moving to the front of the jeep, I did notice quite a bit of play in the
> slip member of the front drive shaft. There is a visible movement, perhaps
> as much as a couple of millimeters. I'm going to remove the front shaft
> again and see what happens. I'll keep you posted.
>
> /Peter
>
>