Re: [T3] A couple of AT questions

["Daniel Baum" <daniel@type34.info>]

<x-flowed>Jim Adney wrote:

> 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.

They were OK (6 lb. ft.)

> 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.

I changed the filler tube gasket when I did the governor cover.

> 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.)

There's no way I can get a torque wrench on those nuts, except maybe with a 
wobbly extension, which I don't have. I think they're OK - they don't feel 
loose and I couldn't see any sign of leakage.

Meanwhile, I had a closer look at the driveplate today, and cleaned it up.

Here it is, after I cleaned up the central hub:

http://www.type34.info/temp/Drive%20plate.jpg

The bolt in the hole is for orientation when I put it back.

The hub itself has a groove in it. Is it supposed to be there, or has it 
been
worn into it over the years by the oil seal?

http://www.type34.info/temp/Groove.jpg



Daniel


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