I recently noticed a large amount of oil dripping from underneath my TJ (2001 Manual 5sp box) after a 30 minute drive. Upon closer inspection I established that it was coming from the gearbox...from the top of the gearbox. I found this a bit weird and wanted to confirm that this was indeed where the oil was coming from. So i pulled the center console out, removed the floor plate where the shifter comes thru and cleaned all the oil from the area.
I now had a clear view of the top of the gearbox and gearstick entry point. Went for a drive and sure thing the oil started leaking out thru the ball joint of the gearstick, this was very clear and there was no other leaking point.
As i had recently done some deep water crossings a friend suggested that i might have water in my gearbox and that the excess fluid was pushing thru the top. I drained the box and added 2 litres of new Royal Purple. Went for a test drive and the same thing happened, oil leaking thru the top at the shifter ball joint.
Can this joint just be warn out? Couldn't see any seals. Has anybody experienced this before?
I'm assuming it's just a simple case of ordering a new shifter assembly but thought i would run it past you guys first and see what you think.
Hey Crazy Dave, just a thought, check the gearbox breather is not blocked (if it has one.... I'm not a TJ expert) I'm thinking if it's blocked, the box could build up pressure when hot, and vent through the shifter???
Mike
Hey Crazy Dave, just a thought, check the gearbox breather is not blocked (if it has one.... I'm not a TJ expert) I'm thinking if it's blocked, the box could build up pressure when hot, and vent through the shifter???
Mike
Hi CJ6,
I do have a gearbox breather. Mine has been extended and runs in under the engine hood and terminates in little filter assembly. Even tho there was evidence of oil in the filter i was still able to blow air thru it with no problem at all. I checked the line from the box to the filter and it was clear as well. So no blockage on the breather side of things.
Any other ideas guys before i go buying a new part?
There isnt usually a seal there, just the rubber dust boot you showed.
Sounds like the box is pressurising for some reason , usually caused by oil overfull ,oil foaming, breather blocked.
Also, shouldnt be getting oil in breather line so definately pressuring for some reason.
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I used to be indecisive but now Im not so sure!!!
Hmm, come on members get your thinking caps on!!! I want Crazy out next weekend wheeling with the "Gang" so he can entertain us with his driving !!
I have been trying my best to come up with a solution to this problem but so far it not looking good .
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Gearbox leaking oil thru shifter joint
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