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Re: [T3] A couple of AT questions


On 6 Aug 2005 at 21:44, Daniel Baum wrote:

> Today I cleaned up my engine bay, and the parts of the tranny that are 
> accessible now that the engine is out. My torque converter is ready - 
> apparently they exchanged it for a rebuilt one, and hopefully I will have 
> time to go and pick it up tomorrow.

Make sure that the exchange TC is of the late style.

> - This is the tranny after I cleaned it. In the end I decided not to spray 
> it with degreaser - I didn't want to take the chance that it or the water 
> would get in anywhere - so I used a scraper, paper towels and a little bit 
> of WD-40:
> 
> http://www.type34.info/temp/mini-Photos%20July%202005%20047.jpg
> 
> Around the central plate (the one that it held on with all those screws), 
> there was some very old, stringy silicone sealant that just peeled off.

That plate is the carrier for the differential. If there's silicone sealant 
there then this means that the final drive has been taken apart sometime and 
serviced. The silicone would just be the sealant that they applied to the paper 
gasket there and which squished out when they tightened things down. You could 
check your manual and make sure that the bolts there are tight to spec.

> - On top of the tranny, I believe I am missing a metal cover:
> 
> http://www.type34.info/temp/mini-Photos%20July%202005%20046.jpg
> 
> Is it important enough to delay putting the engine back to find one?

No, I agree with Russ.

> - There is still a small leak from something in this picture:
> 
> http://www.type34.info/temp/mini-Photos%20July%202005%20049.jpg
> 
> The tranny is damp with ATF and there is a small puddle on the floor under 
> it.: I have changed the gaskets on the governor cover and the filler. The filler 
> tube is tightly screwed on. Any idea what can be leaking?

It looks like it's close to the connector for the kickdown switch, but it's 
also possible that it's come over from the filler tube. Your gasket kit should 
have O-rings for both, you might want to just replace both of them while you're 
in there. It's not really necessary, but these would both be easier to do with 
the engine out.

Leakage from the output shaft seals on both sides would be gear oil, so they 
are not a suspect here. There is a joint between the actual AT housing and the 
final drive housing, however, which is secured by 4 long studs. Check the 
torque on those nuts to make sure that they are tight to spec. A couple of 
people here have reported those coming loose (or having never been tightened 
properly.)

You already replaced the governor cover O-ring, so that should not be a 
problem, but it is POSSIBLE that there is some dirt keeping the O-ring from 
sealing. The O-ring groove and the sealing area of the cover both need to be 
clean when you install them. Given the care you usually seem to take, I doubt 
if this is your problem.

-- 
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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