[FC] More ? for the masters; 90 weight leak

[James Davis]

Sounds like you have a leaking clutch input shaft seal.  The seal is 
located in the clutch throughout bearing shaft. This is not an 
uncommon affliction.  Remember the transmission input shaft goes from 
the clutch disk to the very front of the transmission (it is 
approximately 24 inches long).  Diff/transmission oil is 
centrifugally thrown on the clutch disk.  Oil coated clutch disk grab 
when cold and slip when hot.  The newer machined clutch throughout 
bearing shafts have provisions got two input seals in tandem to 
hopefully alleviate the sort of problem you are experiencing.
Just drop the engine and transalxe, split the assembly at the bell 
housing, replace the clutch disk, input shaft bearing, clutch 
throughout bearing, and clutch input shaft seal.  Reassemble and reinstall.
Jim Davis.



At 11:10 PM 11/7/2005, Wild8bill at aol.com wrote:
>Before I randomly start "fixing" things, I need to get someone's two cents
>worth of info. I have a gear oil leak that appears to be between the
>differential and the clutch (4 speed mated to former powerglide 
>motor). It seams to be
>from the lower half or bottom of the connection. I'm under the 
>impression that
>the differential is a "bath-tub" with no way for the 90 weight to reach a
>joint. Also, possibly related, after the truck gets hot, when going 
>up a steep hill
>or accelerating fast, the motor will race and the speed decreases or stays
>the same (like an automatic thats slipping). Other symptoms: hole plug above
>clutch cable inlet is missing; there is small amount of oil in the 
>clutch inlet;
>no 90 weight leaks from filler bolt or top plate; no dripping until it's
>warmed up, stops after a few minutes when parked, but really comes 
>out when first
>parked (18" round puddle). I need to get someone to watch it, because I don't
>know if it's only dripping when I depress the clutch, or all the time. At the
>rate it comes out, I would think the differential would be dry, and 
>that there
>would be a trail going down the street, but there is still oil left (but
>less), and the only noticeable drips are where I parallel park. Any 
>suggestions?
>_________________________________________