Mike Romain

Your point?

Do locking hubs magically prevent you from shifting out of 4x4 like the
OP was told?

Mike


The Fuzz wrote:
>
> My 96 xj has locking hubs, Oh by the way it is a warn conversion.
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:421F2B1B.4FED713A@sympatico.ca...
> > You have permanently locked hubs, the previous owner obviously had no
> > clue how to use the 4x4.
> >
> > You can shift on the fly into and out of 4 high at any legal speed on a
> > Jeep. I just treat 4 H like any other shift and when I see a snow patch
> > coming, I shift in, get back to dry and just shift back to 2x4.
> >
> > When using 4 low for high torque and low speeds, you should be moving
> > 2-3 mph only when shifting into or out of it or you will get bad
> > noises. It clunks at the best of times going into low though.
> >
> > Even with the older vacuum axled hubs, you didn't have to back up to
> > unlock them. You sometimes have to let off on the gas pedal fast to
> > bump the vacuum up to get them to work, but that is just because of old
> > age and leaky vacuum hoses. If the shifter will physically shift to 2
> > wheel drive, you 'are' in 2 wheel drive period. The shifter disconnects
> > the front driveshaft from the engine.
> >
> > On my 86 CJ7 with locking hubs, I sometimes have issues getting it out
> > of 4x4 low. The shifter itself won't move sometimes unless I spin
> > rubber or goose it in reverse. This only happens after coming off a too
> > high a traction area just before wanting to use 2x4 again.
> >
> > So if the shifter won't move, you have to hit reverse sometimes or spin
> > rubber, but the hubs don't care one way or the other.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > tfwilliams@gmail.com wrote:
> >>
> >> I just purchased a 2nd-hand 1994 Cherokee with the 5-speed manual,
> >> part-time 4WD tranny. The previous owner told me that you needed to
> >> back it up to unlock the hubs after having it in 4WD. I had to do this
> >> for my 88 Trooper. But I haven't seen anything in the Jeep owner's
> >> manual about backing up to unlock the hubs.
> >>
> >> Do I need to back to unlock hubs, or not?
> >>
> >> thanks,
> >>
> >> Tom

Mike Romain

Your point?

Do locking hubs magically prevent you from shifting out of 4x4 like the
OP was told?

Mike


The Fuzz wrote:
>
> My 96 xj has locking hubs, Oh by the way it is a warn conversion.
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:421F2B1B.4FED713A@sympatico.ca...
> > You have permanently locked hubs, the previous owner obviously had no
> > clue how to use the 4x4.
> >
> > You can shift on the fly into and out of 4 high at any legal speed on a
> > Jeep. I just treat 4 H like any other shift and when I see a snow patch
> > coming, I shift in, get back to dry and just shift back to 2x4.
> >
> > When using 4 low for high torque and low speeds, you should be moving
> > 2-3 mph only when shifting into or out of it or you will get bad
> > noises. It clunks at the best of times going into low though.
> >
> > Even with the older vacuum axled hubs, you didn't have to back up to
> > unlock them. You sometimes have to let off on the gas pedal fast to
> > bump the vacuum up to get them to work, but that is just because of old
> > age and leaky vacuum hoses. If the shifter will physically shift to 2
> > wheel drive, you 'are' in 2 wheel drive period. The shifter disconnects
> > the front driveshaft from the engine.
> >
> > On my 86 CJ7 with locking hubs, I sometimes have issues getting it out
> > of 4x4 low. The shifter itself won't move sometimes unless I spin
> > rubber or goose it in reverse. This only happens after coming off a too
> > high a traction area just before wanting to use 2x4 again.
> >
> > So if the shifter won't move, you have to hit reverse sometimes or spin
> > rubber, but the hubs don't care one way or the other.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > tfwilliams@gmail.com wrote:
> >>
> >> I just purchased a 2nd-hand 1994 Cherokee with the 5-speed manual,
> >> part-time 4WD tranny. The previous owner told me that you needed to
> >> back it up to unlock the hubs after having it in 4WD. I had to do this
> >> for my 88 Trooper. But I haven't seen anything in the Jeep owner's
> >> manual about backing up to unlock the hubs.
> >>
> >> Do I need to back to unlock hubs, or not?
> >>
> >> thanks,
> >>
> >> Tom

Mike Romain

Your point?

Do locking hubs magically prevent you from shifting out of 4x4 like the
OP was told?

Mike


The Fuzz wrote:
>
> My 96 xj has locking hubs, Oh by the way it is a warn conversion.
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:421F2B1B.4FED713A@sympatico.ca...
> > You have permanently locked hubs, the previous owner obviously had no
> > clue how to use the 4x4.
> >
> > You can shift on the fly into and out of 4 high at any legal speed on a
> > Jeep. I just treat 4 H like any other shift and when I see a snow patch
> > coming, I shift in, get back to dry and just shift back to 2x4.
> >
> > When using 4 low for high torque and low speeds, you should be moving
> > 2-3 mph only when shifting into or out of it or you will get bad
> > noises. It clunks at the best of times going into low though.
> >
> > Even with the older vacuum axled hubs, you didn't have to back up to
> > unlock them. You sometimes have to let off on the gas pedal fast to
> > bump the vacuum up to get them to work, but that is just because of old
> > age and leaky vacuum hoses. If the shifter will physically shift to 2
> > wheel drive, you 'are' in 2 wheel drive period. The shifter disconnects
> > the front driveshaft from the engine.
> >
> > On my 86 CJ7 with locking hubs, I sometimes have issues getting it out
> > of 4x4 low. The shifter itself won't move sometimes unless I spin
> > rubber or goose it in reverse. This only happens after coming off a too
> > high a traction area just before wanting to use 2x4 again.
> >
> > So if the shifter won't move, you have to hit reverse sometimes or spin
> > rubber, but the hubs don't care one way or the other.
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's
> >
> > tfwilliams@gmail.com wrote:
> >>
> >> I just purchased a 2nd-hand 1994 Cherokee with the 5-speed manual,
> >> part-time 4WD tranny. The previous owner told me that you needed to
> >> back it up to unlock the hubs after having it in 4WD. I had to do this
> >> for my 88 Trooper. But I haven't seen anything in the Jeep owner's
> >> manual about backing up to unlock the hubs.
> >>
> >> Do I need to back to unlock hubs, or not?
> >>
> >> thanks,
> >>
> >> Tom

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

The previous owner meant to back up while you are shifting out of
four wheel drive. A must with old Ford products as the the Dana and nine
inch ratios don't exactly match, not as important with Jeeps, unless
there is a tire size or pressure difference. But, it a good practice to
get into.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

tfwilliams@gmail.com wrote:
>
> I just purchased a 2nd-hand 1994 Cherokee with the 5-speed manual,
> part-time 4WD tranny. The previous owner told me that you needed to
> back it up to unlock the hubs after having it in 4WD. I had to do this
> for my 88 Trooper. But I haven't seen anything in the Jeep owner's
> manual about backing up to unlock the hubs.
>
> Do I need to back to unlock hubs, or not?
>
> thanks,
>
> Tom

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

The previous owner meant to back up while you are shifting out of
four wheel drive. A must with old Ford products as the the Dana and nine
inch ratios don't exactly match, not as important with Jeeps, unless
there is a tire size or pressure difference. But, it a good practice to
get into.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

tfwilliams@gmail.com wrote:
>
> I just purchased a 2nd-hand 1994 Cherokee with the 5-speed manual,
> part-time 4WD tranny. The previous owner told me that you needed to
> back it up to unlock the hubs after having it in 4WD. I had to do this
> for my 88 Trooper. But I haven't seen anything in the Jeep owner's
> manual about backing up to unlock the hubs.
>
> Do I need to back to unlock hubs, or not?
>
> thanks,
>
> Tom

L.W.(=?iso-8859-1?Q?=DFill?=) Hughes III

The previous owner meant to back up while you are shifting out of
four wheel drive. A must with old Ford products as the the Dana and nine
inch ratios don't exactly match, not as important with Jeeps, unless
there is a tire size or pressure difference. But, it a good practice to
get into.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

tfwilliams@gmail.com wrote:
>
> I just purchased a 2nd-hand 1994 Cherokee with the 5-speed manual,
> part-time 4WD tranny. The previous owner told me that you needed to
> back it up to unlock the hubs after having it in 4WD. I had to do this
> for my 88 Trooper. But I haven't seen anything in the Jeep owner's
> manual about backing up to unlock the hubs.
>
> Do I need to back to unlock hubs, or not?
>
> thanks,
>
> Tom

Mike Romain

Crap Bill, I can just see someone doing 65 mph and in order to shift
having to stop on the highway and go backward against 70 mph traffic to
shift to 2WD. LOL! Too funny....

Mike

"L.W.(ßill) ------ III" wrote:
>
> The previous owner meant to back up while you are shifting out of
> four wheel drive. A must with old Ford products as the the Dana and nine
> inch ratios don't exactly match, not as important with Jeeps, unless
> there is a tire size or pressure difference. But, it a good practice to
> get into.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> tfwilliams@gmail.com wrote:
> >
> > I just purchased a 2nd-hand 1994 Cherokee with the 5-speed manual,
> > part-time 4WD tranny. The previous owner told me that you needed to
> > back it up to unlock the hubs after having it in 4WD. I had to do this
> > for my 88 Trooper. But I haven't seen anything in the Jeep owner's
> > manual about backing up to unlock the hubs.
> >
> > Do I need to back to unlock hubs, or not?
> >
> > thanks,
> >
> > Tom

Mike Romain

Crap Bill, I can just see someone doing 65 mph and in order to shift
having to stop on the highway and go backward against 70 mph traffic to
shift to 2WD. LOL! Too funny....

Mike

"L.W.(ßill) ------ III" wrote:
>
> The previous owner meant to back up while you are shifting out of
> four wheel drive. A must with old Ford products as the the Dana and nine
> inch ratios don't exactly match, not as important with Jeeps, unless
> there is a tire size or pressure difference. But, it a good practice to
> get into.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> tfwilliams@gmail.com wrote:
> >
> > I just purchased a 2nd-hand 1994 Cherokee with the 5-speed manual,
> > part-time 4WD tranny. The previous owner told me that you needed to
> > back it up to unlock the hubs after having it in 4WD. I had to do this
> > for my 88 Trooper. But I haven't seen anything in the Jeep owner's
> > manual about backing up to unlock the hubs.
> >
> > Do I need to back to unlock hubs, or not?
> >
> > thanks,
> >
> > Tom

Mike Romain

Crap Bill, I can just see someone doing 65 mph and in order to shift
having to stop on the highway and go backward against 70 mph traffic to
shift to 2WD. LOL! Too funny....

Mike

"L.W.(ßill) ------ III" wrote:
>
> The previous owner meant to back up while you are shifting out of
> four wheel drive. A must with old Ford products as the the Dana and nine
> inch ratios don't exactly match, not as important with Jeeps, unless
> there is a tire size or pressure difference. But, it a good practice to
> get into.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> tfwilliams@gmail.com wrote:
> >
> > I just purchased a 2nd-hand 1994 Cherokee with the 5-speed manual,
> > part-time 4WD tranny. The previous owner told me that you needed to
> > back it up to unlock the hubs after having it in 4WD. I had to do this
> > for my 88 Trooper. But I haven't seen anything in the Jeep owner's
> > manual about backing up to unlock the hubs.
> >
> > Do I need to back to unlock hubs, or not?
> >
> > thanks,
> >
> > Tom

Jeff Strickland

The hubs lock through a vacuum mechanism. There is a collar of sorts that
slides over two splined shafts to connect them, this collar moves on command
of a vacuum system. Sometimes the shafts and collar can bind, and going in
reverse will release the bind and allow the collar to move back to its home
position. This is not in the manual because it is not "required". It is
helpful though. You can also release the binding, if present, by changing
the load on the drive train, you can do this by letting off of the gas and
turning the steering wheel from side to side.

If you shift out of 4WD, and can hear the resulting clunk from the movement
of the collar, then you do not have to do anything else. In theory, all you
need do is shift out of 4WD, and eventually the vacuum system will pull the
collar back to its home position. In practice, the collar can stick and the
remedy is to try going backwards for a few feet.



<tfwilliams@gmail.com> wrote in message
news:1109331862.317898.99190@l41g2000cwc.googlegro ups.com...
> I just purchased a 2nd-hand 1994 Cherokee with the 5-speed manual,
> part-time 4WD tranny. The previous owner told me that you needed to
> back it up to unlock the hubs after having it in 4WD. I had to do this
> for my 88 Trooper. But I haven't seen anything in the Jeep owner's
> manual about backing up to unlock the hubs.
>
> Do I need to back to unlock hubs, or not?
>
> thanks,
>
> Tom
>