5-speed Transxle R&R
11-12-2002, 11:44 PM
#1
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5-speed Transxle R&R
If you need to inspect your transaxle but don't need to remove it from the suspension frame, I have some hints for a "simpler" removal.
Why drop all that stuff and not remove it from the frame? In my case one of the front shaft rod plugs came out after a rebuild that caused quite a leak in my track car. The shop offered to do the transaxle R&R before, but they’ve never done a 928 (he mostly does 944s and 911s). Since I‘ve done it several times I offered to do the dirty work if I could use his shop.
With the "classical" transaxle removal procedure listed in the workshop manuals, both axle shafts must be unbolted from the transaxle, the transaxle is suspended by a chain (across the rear of the transaxle) and then whole rear sub-frame is removed. Once all that mess is out of the way the transaxle is removed using a transmission jack.
The "abbreviated” method that I used was to:
- remove all the necessary goodies, but not unbolt the axle shafts
- suspend the whole rear frame and transaxle (we used a heavy duty shop cart)
- remove the lower bolts from transaxle mounts
- unbolt the transaxle from the torque tube
- very gently pry the torque tube and transaxle apart until transaxle sleeve clears the torque tube shaft
- then raise the car and wheel the whole unit back to work on it
With the 1985 drivetrain there was just enough movement in the CV joints to permit the transaxle to move enough rearward to separate it from the torque tube. This may not be the case with earlier models, especially ’78 – ‘79 models that seem to have the transaxle a little more forward. If your CV boots are old, you may just rip them too.
Installation was relatively simple too. I had to take care that the transaxle sleeve was at the correct angle to intercept the torque tube shaft. After that we just pushed the transaxle forward, installed the SIX bolts that hold the torque tube to the transaxle, and connected the remaining stuff.
If anyone is interested I have a few pictures that I could send.
Happy transaxle removal.
Why drop all that stuff and not remove it from the frame? In my case one of the front shaft rod plugs came out after a rebuild that caused quite a leak in my track car. The shop offered to do the transaxle R&R before, but they’ve never done a 928 (he mostly does 944s and 911s). Since I‘ve done it several times I offered to do the dirty work if I could use his shop.
With the "classical" transaxle removal procedure listed in the workshop manuals, both axle shafts must be unbolted from the transaxle, the transaxle is suspended by a chain (across the rear of the transaxle) and then whole rear sub-frame is removed. Once all that mess is out of the way the transaxle is removed using a transmission jack.
The "abbreviated” method that I used was to:
- remove all the necessary goodies, but not unbolt the axle shafts
- suspend the whole rear frame and transaxle (we used a heavy duty shop cart)
- remove the lower bolts from transaxle mounts
- unbolt the transaxle from the torque tube
- very gently pry the torque tube and transaxle apart until transaxle sleeve clears the torque tube shaft
- then raise the car and wheel the whole unit back to work on it
With the 1985 drivetrain there was just enough movement in the CV joints to permit the transaxle to move enough rearward to separate it from the torque tube. This may not be the case with earlier models, especially ’78 – ‘79 models that seem to have the transaxle a little more forward. If your CV boots are old, you may just rip them too.
Installation was relatively simple too. I had to take care that the transaxle sleeve was at the correct angle to intercept the torque tube shaft. After that we just pushed the transaxle forward, installed the SIX bolts that hold the torque tube to the transaxle, and connected the remaining stuff.
If anyone is interested I have a few pictures that I could send.
Happy transaxle removal.
11-13-2002, 01:19 PM
#2
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Hmmm, interesting. I assume you disconnect the brake lines? With my 86 5 speed, I would like to lower my transmission enough to replace the springs on the shift rod, do you think I could do that by unbolting the rear frame and torque tube, and lowering the transaxle/frame assembly a short distance?
Thanks!
-Joel.
Thanks!
-Joel.
11-13-2002, 04:06 PM
#4
Burning Brakes
Join Date: Apr 2002
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Hello Rich and other interested,
Interesting history -Look at the two pictures from when I rebuild my car - We had:
2 cars - 2 men - 2 car lifts - 2 rolling garage table
Then we simply loosen (not totally) the total rear transmission unit - Lower the lift so the transmission was 'standing on the table - Remove the bolts - Lifted the car, and then we had the total unit standing on the table
<a href="http://boards.rennlist.com/upload/2cars2lifts1copy.jpg" target="_blank">http://boards.rennlist.com/upload/2cars2lifts1copy.jpg</a>
<a href="http://boards.rennlist.com/upload/2cars2lifts2copy.jpg" target="_blank">http://boards.rennlist.com/upload/2cars2lifts2copy.jpg</a>
Interesting history -Look at the two pictures from when I rebuild my car - We had:
2 cars - 2 men - 2 car lifts - 2 rolling garage table
Then we simply loosen (not totally) the total rear transmission unit - Lower the lift so the transmission was 'standing on the table - Remove the bolts - Lifted the car, and then we had the total unit standing on the table
<a href="http://boards.rennlist.com/upload/2cars2lifts1copy.jpg" target="_blank">http://boards.rennlist.com/upload/2cars2lifts1copy.jpg</a>
<a href="http://boards.rennlist.com/upload/2cars2lifts2copy.jpg" target="_blank">http://boards.rennlist.com/upload/2cars2lifts2copy.jpg</a>