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Patrol GR locks rear wheels in hi range
Posted: Fri Nov 06, 2009 5:46 am
by JeepJukka
Buddys Patrol GR have locked couple times now rear wheels.
first time this happened with made in Finland 3.4 transfer case gears, then we swap to 3.7 gearmaster gears. same thing again....... in hi range after few kilometers rear wheel locks ....... when shifted to lo-range, it runs normally.
what causes this? something broke in transmission or are we f.....d up transfer case rebuild?
Posted: Tue Nov 10, 2009 12:44 am
by JeepJukka
no ideas?
Posted: Tue Nov 10, 2009 1:14 am
by patrol man
not quite sure what your saying?
"locked the rear wheels" as in the rear drive shaft wont turn?
Posted: Tue Nov 10, 2009 4:26 pm
by JeepJukka
patrol man wrote:not quite sure what your saying?
"locked the rear wheels" as in the rear drive shaft wont turn?
yes, rear drive shaft wont turn in hi-range. but when shifted to low, everything works normally.
Posted: Tue Nov 10, 2009 7:43 pm
by patrol man
I would be having a good look at the high low selector fork, to me it sounds like it is picking both gears at the same time , the result been the lock up you are experiencing. Even if it is only picking up half a gear or only going across enough to grab the low gear it will do it.
This would explain why it only does it in high, as when you select low it goes all the way over to low, ie no fault. but back to high it is not going over far enough or is able to more back some and grab low as well.
just my thoughts, cheers.
Posted: Tue Nov 10, 2009 10:28 pm
by ozy1
ive never stripped a transfer down, but considering the patrols have neutral in between high and low, i would not think it could pick up high and low range at the same time,
just my opinion
Posted: Tue Nov 10, 2009 11:15 pm
by patrol man
As the high range drive goes strait through the transfer I cant imaging what else would cause it to bind up!
Posted: Wed Nov 11, 2009 12:54 am
by JeepJukka
same thing happened with both transfer cases........ it locked after few kilometers highway drive.
Posted: Wed Nov 11, 2009 9:58 pm
by Wish I had coils
could you see any damage on the other gears that you pulled out this might put you on to the right direction.
Posted: Thu Nov 12, 2009 6:12 am
by raptorthumper
There is a small pin that can come out, and i am almost certain you have left this loose in the transfer case and it is locking gears.
Quote"
When you split the case there is a small dowel pin. It sits in the front alloy housing between the two selector fork shafts and can be easily lost, so look for it straight away before moving the cases around. Quote"
Have a read of this thread
http://www.outerlimits4x4.com/viewtopic.php?t=67207
_
Posted: Sun Nov 15, 2009 7:29 pm
by JeepJukka
first transfer case is now in pieces....... needle bearing is burned and totally jammed (that bearing is in between main shaft and biggest reduction gear)
seems like it´s caused by oiling issue...... dropped t-case and GL-4 oil....... not good combination?