![]() |
|
|
|
Moderator
|
Torque Tube Rebuild Begins
Ok, started my TT Rebuild today. I am following a Dwayne write up with subtle changes in my procedures. I bought a 6 foot piece of threaded 5/8" Rod. Went to Home Depot and got the nuts, washers. Cut up a small piece of 2x4 and used a small can to mark my circle and used a Jig Saw to make the cut. I put some bearing grease on the rod as well as the edges of the wood just in case it decided to rub the TT sides.
The 2-1/8" measurement was how far the Shaft end was to the Tube end. Day 1 ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** ![]() Last edited by MPDano; 01-22-2012 at 05:31 PM.. |
||
![]() |
|
Moderator
|
More pics
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** ![]() Last edited by MPDano; 01-22-2012 at 05:32 PM.. |
||
![]() |
|
Moderator
|
A few more.
![]() ![]() ![]() ![]() ![]() ![]() ![]()
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** ![]() |
||
![]() |
|
Moderator
|
Contrary to information I got from one of the Vendors. There are only "2" Bearings in an Automatic Trans Torque Tube.
I also bought a handy dandy 12 Ton Shop Press from Harbor Freight today and also bought a small wheeled dolly. I bolted the Shop Press to it so I can move the Press around. This is a Tool you NEED to remove and install bearings correctly. Even pressing the Torque Converter Shaft was a bear when it finally broke free. ![]() ![]()
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** ![]() |
||
![]() |
|
Moderator
|
Torque Converter Bearings were giving me trouble since I don't own any good Snap Ring Pliers. I got out at least one of the bearings so I can match them up at Kaman Bearing tomorrow. I'll get a better tool for the Snap Ring as well. Also, the TC had to be pried off since it was stuck with corrosion and rust. Just a few prys on each side and she broke free.
![]() ![]() ![]() ![]() ![]()
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** ![]() |
||
![]() |
|
Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
|
Does that TT need some kind of fancy clamp or does it use the clip to keep the pinch thing from migrating?
|
||
![]() |
|
![]() |
Registered
Join Date: Feb 2008
Location: Carlsbad, CA USA
Posts: 123
|
Very cool, Leo!
I especially like how you mounted the press on the moving dolly. I'm going to do the same thing :-) |
||
![]() |
|
Petie3rd
|
sand down the TC and spray it with some rust inhibitor paint,
mask off the cone that fits into the flex plate use antiseize grease on the snout when refitting , Mask the mounting pads and the input to the trans front pump . for the vibe damper drill 2 small holes in the TT to fit a pop rivet and put one pop on either side of the damper, this way it wont slide around down the road . if the rubbers are loose get some glue and reglue them to the damper, make sure the rivets are long enough to catch the damper. OR use sheet metal screws with bolt type heads to screw into the TT after the damper is fitted Nice work and photos
__________________
^^^ Stan ^^^ 2019 BMW K1250 GS 2016 HD RK 1988 S4 Auto , Elfenbein Perlglanz, Pearl Gray 1982 5sp Met black and tan sport seats Last edited by Mrmerlin; 01-22-2012 at 07:07 PM.. |
||
![]() |
|
Registered
Join Date: Aug 2003
Location: Cypress (Houston), TX
Posts: 25
|
Thanks for posting the pics. I wasn't clear how this extraction process worked, now it's clear.
I probably need to do this job on my 86.5 but the only symptom I have is the damper sliding forward and back and making a clunk when I accelerate and brake. (at least that's my guess as to what's going on) I thought the damper was in the middle, between the bearings, but your pics show it on one end with both bearings on one side of it?
__________________
86.5 928 meteor-metallic auto 89 S4 928 87 5 speed 82 blk/blk auto |
||
![]() |
|
Moderator
|
Quote:
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** ![]() |
||
![]() |
|
Registered
Join Date: Aug 2003
Location: Cypress (Houston), TX
Posts: 25
|
Right, understand there's no bearings on the damper, just thought the damper was in the middle, but looking back at Dwayne's pics, I was confused...
__________________
86.5 928 meteor-metallic auto 89 S4 928 87 5 speed 82 blk/blk auto |
||
![]() |
|
Registered
Join Date: Jan 2009
Posts: 75
|
Quote:
The auto TTs with the 28mm drive shafts only had two bearing units as you have found in your TT. However yours is a 25mm drive shaft. The only time we haven't is when we take apart a previously rebuilt TT. Yours does look like it has the original bearings in the bearing units which suggests that this hasn't been rebuilt, but I can't tell for sure. But then again nothing should surprise us anymore, Porsche did change their build specs on the fly. Have fun with the rebuild. Cheers, Constantine |
||
![]() |
|
Registered
Join Date: Jan 2009
Posts: 75
|
Quote:
Here is one we found during a recent TT rebuild. You can see where the drive shaft was being rubbed by the vibe dampener bits hanging on the drive shaft. Thankfully it was caught in time and the drive shaft did not seem to be too damaged. ![]() HTH, Constantine |
||
![]() |
|
Moderator
|
Quote:
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** ![]() |
||
![]() |
|
Moderator
|
Went to the local Kaman Bearing in San Diego after work yesterday. Had them match both the TT and TC Bearings. I paid a little bit more than I could have online, but I bought local and feel good about that. Plus my TT Bearings are NSK and Made in the USA. TC are SKF and am good with that as well.
I kept the Shielded for the TT and Sealed for the TC since that is what was there before and made sense to keep that part the same. ![]() ![]()
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** ![]() |
||
![]() |
|
Registered
Join Date: Jan 2009
Posts: 75
|
The TT bearings we've found have been from SKF as well as FAG.
Biggest clue is if they have a C5 rating. If they are anything less than a C5 clearanced bearing, they are not original. Most rebuilders use a C3 as replacement bearings since the C5 can't be found. If you do find any they are expensive as well as probably old stock with the old school grease dried up in them. |
||
![]() |
|
Moderator
|
Quote:
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** ![]() Last edited by MPDano; 01-24-2012 at 03:21 PM.. |
||
![]() |
|
Registered
Join Date: Jan 2009
Posts: 75
|
From your pictures you have a C3 rated NSK bearing.
They are the last two digits on the box. The 6006 is the bearing size and the ZZ means they are double steel shielded. |
||
![]() |
|
Moderator
|
Today, I pressed the new SKF Bearings in the TC Cover. Also pressed the Shaft back in as well. I had a little trouble pressing in the bearings straight, so I used my rubber mallet to get them started, then finished it off with the press using the 2" Socket. Don't forget the spacer in-between the bearings before you press in the second one. FYI, I used a little bit of anti sieze on the bearing surface, not sure if it matters but I did it anyways.
I also followed the Dwayne writeup and bought a 6" piece of 1-1/2" threaded pipe. I also bought a cap and grinded the top a little so the press wouldn't slip on it. Just press until it gives some resistance and then check to see if it sits right where teh circlip will fit. Ah, the feel of brand new bearings is soooooo smooth. ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]()
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** ![]() Last edited by MPDano; 01-29-2012 at 02:19 PM.. |
||
![]() |
|
Moderator
|
More pics
![]() ![]() ![]() ![]() ![]() ![]() ![]()
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** ![]() |
||
![]() |
|