BigBlueKyHokie

I searched the forum and only found one post back in 2001 where someone had a problem with gear oil leaking from their differential. No root cause found in that case.

I have an '87 with manual and limited slip. After not having driven the car for approx. 4 weeks, I noticed a slick of oil on my garage floor just to the right of center rear. Further inspection found that the joint connecting the right axle to the differential was somewhat wet w/ oil. The left hand side was dry.

My questions are...

1. Common problem? (guessing not)
2. Is there a seal in that joint?
3. Recommended repair method?
4. Level of difficulty.

I'm wondering if I just need to drain, add new oil and torque the bolts.

All thoughts welcome.

SchnellerUmsetzer

I have done this before you have to have a 8mm Star Socket
Drain the oil out of the tranny (takes a 17 0r 18mm allen)

take the CV Joint loose on just the side connecting to the tranny (takes a 8mm Star socket)
You need a allen socket to remove the axle (after taking off the CV join the allen sets right in the middle of the axle)

Pull the axle out you will notice a round black rubber seal. Looks about the size of a can of Chewing tobbacco.
pull that seal out easly, The tranny is AL so don't get the pry bar and hammer. Use a soft object it will come out

Replace the seal
replace the axel torque the allen to 15lbs
Replace the CV torque the Star bolts to 20 Lbs

Put 80W-90 back in the tranny the filler is at the top takes the same allen as the drain!

I recommend Swepco 201!

That is all I know!

Matt Sheppard

It is prob. the final drive flange seal (age and heat from the exhaust). It's recommended to replace the seals on both sides. Easy proceedure, just messy as you need to take off the inboard CV joints to access the allen head cap-screw holding the flanges on.

Take the flanges off, replace the seals w/ factory parts and reassemble. Use NEW CV bolts as well on reassembly.

hosrom_951

Ditto, except 18lbs for the 6mm allen head bolt and 31lbs for the cv joint bolts, and again 18lbs for the drain and fill plugs. Search under my name, i asked about this as well as started two (or even three) threads on a leak from the transmission area.

kasturbo

It's broke, I'll trade you my non lsd tranny for it!

SchnellerUmsetzer

Very Important!!

SchnellerUmsetzer

theedge

And dont forget... LOOSEN THE FILL PLUG FIRST.

It often seizes. So if youve drained the fluid, and cant get the fill plug out, youre in a big pickle.

Or if you like pickles, youre in a big brussel sprout.

BigBlueKyHokie

All good information. First chance I get, this will be my first significant project on my new baby. And cool.., I get some new tools out of it.

SchnellerUmsetzer

When I bought my first 944 I bought a Haynes manuel. Not to be a smart *** but buy one. These car's are totaly cool. That Manuel, very basic, will truly help begin your quest to take care of a truly great car and work of engineering art "The 944 & 951 Porsche"

azmi951

Buy good cheese head (tripple squair) sockets. When you find out where there are good ones let me know.

Bri Bro

NAPA has them. VW uses this same bolt.