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[GMCnet] My transmission leak... [message #333761] Wed, 20 June 2018 18:50 Go to previous message
Rob is currently offline  Rob   United States
Messages: 651
Registered: November 2013
Location: Victoria, BC
Karma:
Senior Member
Johnny's posts prompted me to post about the transmission leak that I've been chasing for a while - it's been getting progressively worse over time...

I initially had a small leak from the speedometer drive - I didn't think that it was that bad, but I replaced the seal and O-ring and it seemed OK. It might still be dripping slowly...

I pulled the pan a few weeks ago and replaced an old cork gasket that appeared like it was weeping. I installed a WIX rubber pan gasket and also noticed my Ragusa pan had been painted in the past. The leak continues and may be getting slightly worse... Yesterday I tightened the chain cover bolts slightly - there was evidence of leakage there as well.

I've been having a very hard time getting it to leak in my sloped driveway - but today I covered the driver's side with baby powder and drove it back and forth for a while and eventually got a drop! The drops were on the transmission to final drive bolts - very near the dipstick. The dipstick area has always appeared reasonably dry.

I'll pull the dipstick and use RTV (per Jim K.'s previous posts - especially related to "you can waste a lot of time"). I've not seen any discussion regarding leakage from the governor cover or the bolts connecting to the final drive. So I'm thinking that the dipstick is still my main unknown (since I haven't pulled it yet)...

So - as long as the torque convertor is relatively full, how much trans fluid will come out of the dipstick tube when I pull it? Any other common leakage spots near that area (final drive mounting bolts near the dipstick)?

I've wasted a lot of time...

Rob
Victoria, BC
76 Royale - Rear Twins/Dry Bath
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Rob - Victoria, BC - 76 Royale - Rear Twins/Dry Bath

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