powerglide leaking suggestions

I have a 1965 aluminum powerglide tranny, the tranny was just rebuilt and it has a new converter. The front seal is leaking, it is not leaking around the converter, it is leaking around where the seal drives in. i just pulled the tranny and it is a pain to pull, so I want to make sure that this new seal does not leak when it goes back in. Is there anything I can put around the seal that would make sure that it seals this time? Thanks

 

i would clean it real good with brake clean and use rtv called the right stuff in the cheese wiz can and you should be gould to go.

 

I just put a new pg in my car. The crappy paper pan gasket leaks, friggin mess everywhere I park it. Has anyone seen a cork style gasket lately?

Sorry to hijack the thread.

 

Bad idea to use RTV on a transmission.......use a small amount of liquid gasket sealer (I use GMGSC)*around the outer edge, don't get it on the rubber portion of the seal.

*GMSC is General Motors Gasket Sealing Compound, used since the late 50's on all GM engines.

 

Plus make sure it goes in straight. Most I see that leak (other than from age) is from them getting "kinked".

 

need to pull the seal and make sure the bore the seal sets in is not damaged. if it is you can use the super weather strip adhesive after you get it clean and dry.

 

I always use Permatex Aviation gasket sealer around the outside of metal/rubber seals. Something I learned working at the transmission shop many years ago

 

Are you sure it's the converter snout seal? The bolts holding the front pump to the case have seals on them, TWO different styles in fact; one uses an O-ring, the other a two sided fiber gasket; the O-rings tend to spread and split easily. Or, it could be the large O-ring around the pump casting that seals it to the case. Aluminum Glide bolt holes are actually pretty weak, especially after being rebuilt a couple of times; they strip easily. Perhaps a pump to case bolt hole is stripped slightly, and there's a leak right there. I've done a BUNCH of Glides, and I use studs on the extension housing bolt holes with brass nuts (exhaust manifold type), because those 5 bolt holes are the worst for stripping out or enlarging with wear (one of my Glide tricks). The servor cover, being cast iron, with dissimilar expansion rates than aluminum, can result in leaks also. That's why there are so many billet servo covers made of aluminum; to help keep the expansion rates the same. Butch/56sedandelivery.

 

I thought leaking and power glides go hand-in-hand? I had one in my '58 Impala and after multiple trips to the shop it still leaked.

 

If it ain't leakin', it ain't full!

That mess wherever you park is just your PG marking its territory! ;P


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They make a dye for AT fluid. Works the same as the AC dye. That way you can make sure what is leaking BEFORE pulling the trans.

 

Yes everything is brand new and clean. I could see the coming out around the seal. When I removed the seal it looked a little "kinked". Hopefully that will take care of it. Thanks

 

they often leak from the shifter shaft when in park the case wears oval and and the pressure on the shaft pushes to one side distorting the seal, in any other position it doesn't leak.