Do I need to back to unlock hubs, or not?>

thanks,>

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:>>

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.> >

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

The hubs lock through a vacuum mechanism. >

<tfwilliams@gmail.c­om> wrote in message> news:1109331862.317­898.99190@l41g2000cw­c.googlegroups.com..­.>

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

I've never used four wheel drive on a highway.> God Bless America, Гџill O|||||||O> mailto:LWHughes3rd@­aol.com http://www.billhugh­es.com/>

Mike Romain 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,>

But Mike, he was told to go in reverse to allow the mechanism to unlock. I> was thinking he has the system like that in the YJ. It turns out he has the> system that is like the TJ.>

This is not entirely true. Well, it is true in theory. That is there is no> requirement, but we all know that the YJ's front axle can balk at unlocking> when the tcase lever is moved back to 2WD, the work-around for this> balkiness is to back up a few yards.

"Mike Romain" <romainm@sympatico.­ca> wrote in message> news:421F6844.BCC35­59B@sympatico.ca...>­ > He doesn't have a locking front end, it is on all the time.> >

But Mike, he was told to go in reverse to allow the mechanism to unlock. I> was thinking he has the system like that in the YJ. It turns out he has the> system that is like the TJ.>

This is not entirely true. Well, it is true in theory. That is there is no> requirement, but we all know that the YJ's front axle can balk at unlocking> when the tcase lever is moved back to 2WD, the work-around for this> balkiness is to back up a few yards.>

I follow that, but what I have always seen is that the collar sticks.> Backing up a little solves this. Having read about the lever binding up, my> CJ has never had this trouble, so I assumed that any binding in a YJ would> be the fork or the collar on the axle.>

Just like the TJ?>

I thought the Cherokee in '94 would have the same system as the YJ of the> same year.

Our Transfer cases are likely to bind coming out of four wheel> drive on good traction, because your AMC 20 and My nine inch do not> exactly match ratios with our front ends. Something Mike doesn't> experience having both front and rear Danas.> God Bless America, Гџill O|||||||O> mailto:LWHughes3rd@­aol.com http://www.billhugh­es.com/>

Jeff Strickland wrote:> >

"Mike Romain" <romainm@sympatico.­ca> wrote in message> news:421F6844.BCC35­59B@sympatico.ca...>­

This is not entirely true. Well, it is true in theory. That is there is no> requirement, but we all know that the YJ's front axle can balk at unlocking> when the tcase lever is moved back to 2WD, the work-around for this> balkiness is to back up a few yards.

That still has absolutely 'nothing' to do with unlocking the front> hubs!!!!>

That is the t-case binding up. It happens on my dana set up too because> of the high traction muds I run.>

I thought the real bad set was the 410/411 splits on some of them.>

Mike

Tooth counts for AMC 20 and Dana 30 are identical for all ratios except> 3.54:>

http://www.xtremete­rrain.com/p67.htm> http://www.xtremete­rrain.com/p56.htm>

Also, having two Danas doesn't guarantee identical ratios. My Dana 30 is> 41x10 (4.10). My Dana 35 had (4.11). My Dana 44 which would normally> have 45x11 (4.09) has the 41x10 (4.10) TJ Rubicon gears. Granted, these> differences are probably smaller than that between your Dana and Ford,> but you can't say that front and rear Danas will necessarily 'exactly> match'.>

Steve> http://xjeep.dyndns­.org

Steve wrote:>>

I am talking about city and highway driving in my 88 Cherokee to just> release the axle after the shifter has gone to 2 WD. Once the shift is> made the driveshaft is no longer under engine power. Then the only> thing stopping the axle shift is low vacuum and maybe a bit of torque to> spin the carrier and driveshaft so I think the neutral on thrust likely> helps still. A quick goose and let off the gas always worked until> recently for us which also has the not under thrust point you are> talking about. I now think I have a hose loose or cracked under there.> I will check closer come spring, don't mind it on right now.>

I am seriously thinking about a cable switch too but if mine is just a> loose hose, well it has worked well for 305K km....>

Mike

Ah yes, of course.>

Don't know why, but I've always pushed or pulled the cable while still> in 4x4. Maybe it comes from my first test run with the cable when I> stupidly pulled to engage while driving in 2HI. Grrrrunch.>

Steve> http://xjeep.dyndns­.org>

Mike Romain wrote:> > Once the shift is made the driveshaft is no longer under engine power.> >

"Steve" <xjlifter@bogus.com­> wrote in message> news:3898hnF5hhebpU­2@individual.net...

I thought the Cherokee in '94 would have the same system as the YJ of the> same year.>

Nope, my '93 had a non-disconnect axle. They started with the non-disconnect> axle with the full time Tcases, and I'm guessing they decided to drop the> vacuum disconnect so they wouldn't need two different axke systems for the> same vehicle.

Matt Macchiarolo wrote:>>