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Re: [GMCnet] Transmission Leak [message #326408 is a reply to message #326402] Mon, 27 November 2017 17:45 Go to previous messageGo to previous message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma:
Senior Member
My leaks continue also. Yesterday I tried George Z.'s suggestion to put
O-rings on the suspect bolts. Before I even got them torqued, the O-rings
could be squeezing out, so I abandoned that -- I wasn't convinced that ATF
was coming out of my all-deadheaded bolt holes.

At the rear of the pan, where all my leakage occurs, the pan gasket was
1/16"-1/8" beyond the pan flange, extending all the way to the vertical
surface where the chain cover seats. In an effort to determine whether the
leaks are coming from the transmission pan or the chain cover, I trimmed
that gasket back to the pan flange. Today I checked the results -- the ATF
is almost certainly coming over the top of the pan gasket -- where I didn't
use any sealant. I'll continue to keep the drip pan below the transmission
until the next ATF change. Then, I'll probably seal both sides of the
gasket -- as much as I hate the thought of having to clean the transmission
flange in the future. With my drain plug and external filter, if that
solves the leak, then in recognition of my age, I'll probably never change
it again -- just hoping I get a chance to seal both sides. :-)

Ken H.

On Mon, Nov 27, 2017 at 11:58 AM, roy keen wrote:

> On my transmission some were thru bolt holes and some were not. The thru
> ones needed a flange bolt and gasket or sealent so they wouldn't weep fluid.
> --
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
 
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