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machined hole in tranny case

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Offline dustybadlands

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machined hole in tranny case
« on: February 14, 2010, 12:40:41 PM »
Pulled the 5 speed outa the GF's '02 Tracker to fix some stuck fill/drain plugs and I noticed that it had been leaking. It looked like it was coming out of this small hole under the indent spring bolts. It had a little silicone in it (which got cleaned out - oops!). I think that the sensor nearby was the leaker, but now I'm wondering if I should put some more silicone in the hole. Whadya think?
 
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Bobthebiker

Re: machined hole in tranny case
« Reply #1 on: February 14, 2010, 02:11:35 PM »
I would do one better,  silicone is a ghetto fix, considering you have the trans out.   carefully thread the hole, and put a drain plug in it.    if you do that, it wont ever be a concern.

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Offline fuzzy1

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Re: machined hole in tranny case
« Reply #2 on: February 14, 2010, 02:40:26 PM »
I vaguely recall a post on some forum mentioning that mystery hole. This was on a gen1 trackick, but IIRC the consensus was it's supposed to have a plastic 'inverted top hat' plug in it... like what you find in the holes of a reman'd pump etc. Something like that with some rtv around the edge would prolly be fine. As long as it's not where the breather is supposed to connect? Hth
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Offline dustybadlands

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Re: machined hole in tranny case
« Reply #3 on: February 15, 2010, 05:32:19 AM »
Thanx for the replies. I looked at 3 different trannies and they all look like this one. I think I'm gonna press a small tube into it and link it up with the other breather tubes. I'd hate for water to get in there!   ;)
« Last Edit: February 15, 2010, 06:19:43 AM by dustybadlands »
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Offline Skyhiranger

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Re: machined hole in tranny case
« Reply #4 on: February 15, 2010, 06:12:54 AM »
There is a rubber plug that is supposed to be in there.  If you haven't got a plug, then just put something in there and seal it up with silicone sealer.  I wouldn't run it to any other vent/breather tubes.
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Offline dustybadlands

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Re: machined hole in tranny case
« Reply #5 on: February 15, 2010, 07:02:29 AM »
I've noticed that on all the trannies that I've looked at, the alleged plug is absent. My question is,  did it get blown out? There is always a clean area around the hole. Is this from some expulsion of moist air? This section of the trans case does not have a vent, which, by the evidence presented, may be neccessary. Hence my decision to add a "vent". Objections?  :-\
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