Torque Tube, Torque Converter Bearing Replacement Procedure w/pics - Page 7 - Rennlist - Porsche Discussion Forums

Go Back  Rennlist - Porsche Discussion Forums > Water Cooled Technical Discussion Areas > 928 Forum
Reload this Page >

Torque Tube, Torque Converter Bearing Replacement Procedure w/pics

Notices
928 Forum
Sponsored by:
Sponsored by: 928 Specialists

Torque Tube, Torque Converter Bearing Replacement Procedure w/pics

 
Old 12-29-2010, 08:25 PM
  #91  
Bill Ball
Under the Lift
Lifetime Rennlist
Member
 
Bill Ball's Avatar
 
Join Date: Mar 2002
Location: Buckeye, AZ
Posts: 18,465
Default

Originally Posted by Dwayne View Post
Thanks for the positive feedback, Frank! Yes, I hope to have this write up on Dwayne's Garage soon with Bill's help. I do want to finish a write up I'm putting together right now on replacing the front bumper cover and include that in the upload as well. Good luck with the repairs and do keep us posted.

THANKS again, James! I hope your Super Clamp install goes well!
Dwayne: I'm happy to webhost any of your write-ups, as I have always done to date. Just send me the CD when it is ready.
Bill Ball is offline  
Old 12-29-2010, 11:21 PM
  #92  
blown 87
Rest in Peace
Rennlist Member
 
blown 87's Avatar
 
Join Date: May 2006
Location: Bird lover in Sharpsburg
Posts: 9,903
Default

Originally Posted by pcar928fan View Post
As usual Dwayne...WELL PUT! Are you a writer? You should be! Seriously!
100% correct.

There are folks that have made a lot of money doing technical writing to a level that does not come close to what Dwayne does.

J.B. Woods comes to mind, as does my best friend Jack Mitchell.

Chilton aint got crap on our Dwayne.
blown 87 is offline  
Old 12-30-2010, 12:46 AM
  #93  
Dwayne
Addict
Rennlist Member
Thread Starter
 
Dwayne's Avatar
 
Join Date: Sep 2007
Location: Ridgecrest, California
Posts: 1,351
Default

Originally Posted by Bill Ball View Post
Dwayne: I'm happy to webhost any of your write-ups, as I have always done to date. Just send me the CD when it is ready.
EXCELLENT! I will prepare a DVD with the TT and TC bearing write up, the 1987 Bumper Cover write up, a new write up I'm working on right now for repairing the A/C compressor relay resident on the HVAC control head PC board, and an update to the HVAC trouble shooting and repair to address the vacuum diaphragm at the foot well.

THANKS for your help and support, Bill!

Originally Posted by blown 87 View Post
100% correct.

There are folks that have made a lot of money doing technical writing to a level that does not come close to what Dwayne does.

J.B. Woods comes to mind, as does my best friend Jack Mitchell.

Chilton aint got crap on our Dwayne.
THANKS for the generous compliment, Greg! It has been a pleasure for me and I am glad these write ups are useful.
Dwayne is offline  
Old 10-23-2011, 12:58 AM
  #94  
Rob Edwards
Archive Gatekeeper
Rennlist Member
 
Rob Edwards's Avatar
 
Join Date: Sep 2002
Location: Irvine, CA
Posts: 13,565
Default Different way to test a TT for vibration...

Perhaps there's a better thread for this, but I figured I'd put it here. I was out pressure washing a torque tube, just for the hell of it. It occurred to me I could spin it up a good bit with the water pressure. Check out the vibration when the whole thing starts rattling across the driveway... Definitely a bad front bearing, which is ok 'cause it's gonna get Constantined...

Turn up the sound:

Rob Edwards is offline  
Old 10-23-2011, 01:05 AM
  #95  
Tony
No wide loads, please!
Lifetime Rennlist
Member
 
Tony's Avatar
 
Join Date: May 2001
Location: Las Vegas
Posts: 13,099
Default

Originally Posted by Rob Edwards View Post
Perhaps there's a better thread for this, but I figured I'd put it here. I was out pressure washing a torque tube, just for the hell of it. It occurred to me I could spin it up a good bit with the water pressure. Check out the vibration when the whole thing starts rattling across the driveway... Definitely a bad front bearing, which is ok 'cause it's gonna get Constantined...

Turn up the sound:

Interesting. Get one of those little RC engine tachometers and see what it was turning at?
I think the fact that its not anchored at either end makes a difference also.

Do the same thing when you get the replacement.
Tony is offline  
Old 10-23-2011, 06:39 AM
  #96  
Black Sea RD
Addict
Rennlist Member
 
Black Sea RD's Avatar
 
Join Date: Feb 2004
Posts: 2,137
Default

Originally Posted by Tony View Post
Interesting. Get one of those little RC engine tachometers and see what it was turning at?
I think the fact that its not anchored at either end makes a difference also.

Do the same thing when you get the replacement.
Interesting way to get some RPMs into the assembly.

But please don't do this with the Super Bearings. Nothing related to spinning it, more related to the high pressure water getting forced into the new bearings, at least the front one, and shortening their (its) life.

Cheers,
Black Sea RD is offline  
Old 10-23-2011, 09:24 AM
  #97  
blown 87
Rest in Peace
Rennlist Member
 
blown 87's Avatar
 
Join Date: May 2006
Location: Bird lover in Sharpsburg
Posts: 9,903
Default

Originally Posted by Constantine View Post
Interesting way to get some RPMs into the assembly.

But please don't do this with the Super Bearings. Nothing related to spinning it, more related to the high pressure water getting forced into the new bearings, at least the front one, and shortening their (its) life.

Cheers,
I use a couple of clamps and clamp them down to a solid steel workbench, then wind string around the shaft to spin them like a top.

Seems to work well, but it is academic by the time you get the torque tube out, at least for me, because at that point I AM going to change the bearings out.

I will say this much, I have yet to find a TT bearing that I would call good, a few did not make any noise yet, but they spun freely and were very low or out of grease.

There also seems to be no rhyme or reason behind when they will go bad, some have been kind of ok at over 100,000 miles, and others were fully bad at 50,000.

There also seems to be more of them fail at the rubber outer part than at the bearing it self in the lower mileage cars, usually due to oil leaks getting oil inside the tube which degrades the outer rubber and allows the bearing to migrate.

I know you know all that, just reporting for the folks that may not have been into a few of them.
blown 87 is offline  
Old 10-23-2011, 10:11 PM
  #98  
Imo000
Captain Obvious
Super User
 
Imo000's Avatar
 
Join Date: Aug 2003
Location: Cambridge, Ontario, Canada
Posts: 20,886
Default

I think the main problem with the TT bearings is that htey are not sealed. The metal shield is only there to keep dust out. Why didn't they use normal sealed bearings in the factory is beyond me.
Imo000 is offline  
Old 08-06-2016, 05:59 PM
  #99  
hr928
User
 
hr928's Avatar
 
Join Date: Sep 2014
Location: Miami Florida
Posts: 112
Default

Wayne; thank you for your write up. I became an owner of a non-running left to disintegrate for 5 year in a Miami lot 1991 Porsche 928 S4....it was my dream car since I came to this country in 1984. Well, I just got it running for the first time THANKS TO YOUR WRITE UP! I swapped the transmission with a knownd running good one out of a 93 GTS, and it all worked out. I lot of work; with my phone or iPad on hand following your write up word by word, picture by picture I got it done...what a thrill! What a sense of accomplishment! Yes; Rennlist is a great resource....your write ups are even better! THANK YOU THANK YOU THANK YOU.
hr928 is offline  
Old 08-07-2016, 10:14 AM
  #100  
Dwayne
Addict
Rennlist Member
Thread Starter
 
Dwayne's Avatar
 
Join Date: Sep 2007
Location: Ridgecrest, California
Posts: 1,351
Default

Hello Haroldo,
Happy to hear the write up was helpful. Congratulations on getting your transmission swapped out and your 928 running again! Sounds like good times ahead - ENJOY!
Dwayne is offline  
Old 10-14-2016, 12:18 PM
  #101  
Paddcomp
User
 
Paddcomp's Avatar
 
Join Date: Oct 2014
Location: Lancashire UK
Posts: 102
Default

Great write up, as usual from Dwayne. Did this ever get published in a single write up anywhere, checked Dwayne's usual norcal page and couldn't find it.

I'm about to get a mechanic to do my TC bearings and fit Super Bearing in the TT, having a print out would help with some of the 928 specifics.
Paddcomp is offline  
Old 04-23-2018, 06:34 PM
  #102  
Landseer
Addict
Rennlist Member
 
Landseer's Avatar
 
Join Date: Sep 2007
Location: Frederick, Maryland
Posts: 11,258
Default

Dwayne, if you are out there --- thank you for this great writeup.

I need in particular the CH08 sub-routine, the step-by-step process for replacing TC Bearings on the 84 (and 5/6) automatic cars --- this thread delivers timelessly, and the embedded links still work, thank you!
Landseer is offline  

Thread Tools
Search this Thread
Quick Reply: Torque Tube, Torque Converter Bearing Replacement Procedure w/pics


Contact Us About Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: