Join Date: Mar 2006
Location: Helsinki, Finland - on the European side of the Atlantic
To make matters worse, the tech told me he doesn't recommend off-roading with the auto, and that the warranty will be void if they find any mud in the transmission.
Tech is full of crap. Nothing wrong wheeling with an auto tranny - but one needs to know a few things:
* ALL Chrysler RH/RE- series transmissions (30/32/42/44/46/47/48) have their breather through the oil pump at slightly above crankshaft height -> keep it submerged in deep water long enough and you WILL suck in water/ muddy crap.
* Due to above, only go through deep water holes/ mud holes if you know you're not getting stuck and that you won't stay there for several minutes.
If you have the tranny out and plan on wheeling the Jeep, you should plug the original breather from the oil pump (you need to pull the pump -> tighten front band to prevent stuff from coming out from the tranny), drill a hole at the top center ridge on the tranny, tap the hole and install a nipple + breather hose.
1998 Grand Cherokee 5.9 LX daily driver, 1.75" BB, 32" KM2s, HPD30 Eaton e-locker/D44a stock LSD, 4.56 gears, custom- fabbed tube bumpers and tube fenders,...
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1990 XJ Limited (4-door), 4.0 I6, AW4, NP242, ***rolled and totalled @ 165k miles***
1990 XJ (4-door), 4.0 I6, AW4, NP242, PBR 42" tires, Unimog 404 portal axles, 110" WB, full cage + uniframe completely rebuilt, front 3-link + panhard / double triangulated 4-link rear,... ***SOLD***