Go Back  Rennlist - Porsche Discussion Forums > Water Cooled Technical Discussion Areas > 924/931/944/951/968 Forum
Reload this Page >

THE BONUS GUIDE: Manual Steering Rack Cleaning, Regreasing, and Tensioning

Notices
924/931/944/951/968 Forum
Sponsored by:
Sponsored by:

THE BONUS GUIDE: Manual Steering Rack Cleaning, Regreasing, and Tensioning

 
Old 04-01-2014, 03:15 PM
  #16  
Winter44
User
 
Winter44's Avatar
 
Join Date: Jun 2012
Location: Santa Cruz, Ca
Posts: 262
Default

Gotcha. Thanks! I will have to remove the intermediate shaft then.

Thanks
Winter44 is offline  
Old 09-17-2014, 08:02 PM
  #17  
richard944
Addict
Rennlist Member
 
richard944's Avatar
 
Join Date: Sep 2014
Posts: 53
Default

Sorry for the bump, a question:

Let's say you disassemble your rack and find that some of the internals are worn/damaged. Do we have a source for replacement bits?
richard944 is offline  
Old 09-18-2014, 08:32 PM
  #18  
bonus12
User
Thread Starter
 
bonus12's Avatar
 
Join Date: Jun 2010
Location: Northern California, '86 951
Posts: 1,470
Default

That's a great question because parts for the manual rack are nearly impossible to come by, unless you find someone who is parting one. Basically, if one part has gone bad, the rack is totaled and its best to source someone else's used one.
bonus12 is offline  
Old 09-18-2014, 11:38 PM
  #19  
richard944
Addict
Rennlist Member
 
richard944's Avatar
 
Join Date: Sep 2014
Posts: 53
Default

That's what I figured. When I replace my rack I'll see about making some measurements and perhaps CNC'ing the rack (which I'm guessing would be possible - the pinion not so much).
richard944 is offline  
Old 09-19-2014, 04:45 PM
  #20  
Volhv_944
User
 
Join Date: May 2012
Location: Mission BC
Posts: 163
Default

I've always wondered if you can just put the 924 rack, and pinion, in the 944 housing.
Volhv_944 is offline  
Old 03-06-2016, 04:43 PM
  #21  
ekoz
Addict
Rennlist Member
 
ekoz's Avatar
 
Join Date: Feb 2011
Location: St. Louis, MO
Posts: 227
Default

In the process of rebuilding a manual rack I purchased locally (thanks for the write up). So for looks good, everything appears to be in great shape.

Question. The black rubber plug in the bottom of the housing (see photo)? What is the purpose? I can see through it, so my concern is grease will leak out over time. Should I plug it with something else? Is that how its suppose to look? Thanks for the help in advance.

ekoz is offline  
Old 03-06-2016, 05:08 PM
  #22  
bonus12
User
Thread Starter
 
bonus12's Avatar
 
Join Date: Jun 2010
Location: Northern California, '86 951
Posts: 1,470
Default

Is that where the steering rack lock bolt goes? I bought one of those bolts for alignment purposes. It has a cone shaped end which locks into a groove in the toothed rack itself (long toothed part). The groove is located dead center so it is used for alignment - much better than lock the steering wheel from the cockpit, which is the alternative.

This is all "if I am correct". Now after writing the above paragraph I am instead thinking it's this other hole I plugged up with a wad of tinfoil. No leaks.
bonus12 is offline  
Old 03-06-2016, 05:28 PM
  #23  
ekoz
Addict
Rennlist Member
 
ekoz's Avatar
 
Join Date: Feb 2011
Location: St. Louis, MO
Posts: 227
Default

Didn't know it had a lock bolt but that sounds correct. I pulled out (destroyed) the rubber plug and its a threaded hole. I find a bolt and plug it up.
Thanks.
ekoz is offline  
Old 03-07-2016, 08:49 PM
  #24  
951Tom
User
 
951Tom's Avatar
 
Join Date: Oct 2001
Location: Maryland
Posts: 1,220
Default

Bonus12 your post is correct. It's for doing a front end alignment. You center the dimple in the hole, then screw in the special bolt. This centers the rack and then you can proceed with the alignment. Porsche sells a special rubber plug to keep dirt out.
951Tom is offline  
Old 03-10-2016, 10:33 AM
  #25  
tifosiman
Super User
 
tifosiman's Avatar
 
Join Date: Jan 2002
Location: The Heart of it All
Posts: 12,184
Default

Originally Posted by 951Tom View Post
Bonus12 your post is correct. It's for doing a front end alignment. You center the dimple in the hole, then screw in the special bolt. This centers the rack and then you can proceed with the alignment. Porsche sells a special rubber plug to keep dirt out.
If you can't find a plug, you can make a custom bolt to thread into the hole to keep dirt out.


thread a 10x1x35mm bolt into the view port to lock the rack in the centered position. The bolt should have a smooth tapered end to engage the dimple. Use a grinder or hand file to accomplish this. At this time, I recommend to cut a second bolt of the same thread to 15mm to use after install as a plug for the hole. The plastic plug that you removed in step #1 above is probably disintegrated or in poor shape, the bolt is a much better solution.
From the tutorial on installing a manual rack here:

https://rennlist.com/forums/924-931-...rack-swap.html
tifosiman is offline  
Old 03-10-2016, 08:29 PM
  #26  
bonus12
User
Thread Starter
 
bonus12's Avatar
 
Join Date: Jun 2010
Location: Northern California, '86 951
Posts: 1,470
Default

Thanks for the input tifo. Your guide is very helpful and it's what I used a couple years back.
bonus12 is offline  
Old 03-11-2016, 01:43 PM
  #27  
Scott at Team Harco
Just a car guy
Rennlist Member

 
Scott at Team Harco's Avatar
 
Join Date: Jan 2002
Location: South Lyon, Michigan, Ewe Ess Eh
Posts: 7,223
Default

Great tutorial and great thread. Thanks for putting it together Bonus.

On a slightly different matter, I am thinking of converting a powered rack to non-powered. I would plug the hydraulic ports and fill the body with grease.

Do you have any advice or suggestions regarding this idea?
Scott at Team Harco is offline  
Old 03-11-2016, 02:13 PM
  #28  
bonus12
User
Thread Starter
 
bonus12's Avatar
 
Join Date: Jun 2010
Location: Northern California, '86 951
Posts: 1,470
Default

Originally Posted by Scott at Team Harco View Post
Great tutorial and great thread. Thanks for putting it together Bonus.

On a slightly different matter, I am thinking of converting a powered rack to non-powered. I would plug the hydraulic ports and fill the body with grease.

Do you have any advice or suggestions regarding this idea?
Only ideas are to fully dissassemble the thing so you can get a good look at it and remove all old ATF and debris. It's a good time to inspect things and replace what you can.

As for the rest, use a a high quality grease and fill it up real nice.
Pretty basic I guess.
bonus12 is offline  
Old 03-11-2016, 02:35 PM
  #29  
Scott at Team Harco
Just a car guy
Rennlist Member

 
Scott at Team Harco's Avatar
 
Join Date: Jan 2002
Location: South Lyon, Michigan, Ewe Ess Eh
Posts: 7,223
Default

Sounds good. Pretty much what I had in mind. I'm pretty sure I rebuilt at least one of my potential racks using the Rennbay kit. So most everything should be in decent shape. Cleaning and greasing it will probably be all I need to do (and plugging).

Thanks for reinforcing my thoughts.
Scott at Team Harco is offline  
Old 03-11-2016, 02:46 PM
  #30  
bonus12
User
Thread Starter
 
bonus12's Avatar
 
Join Date: Jun 2010
Location: Northern California, '86 951
Posts: 1,470
Default

Originally Posted by Scott at Team Harco View Post
Sounds good. Pretty much what I had in mind. I'm pretty sure I rebuilt at least one of my potential racks using the Rennbay kit. So most everything should be in decent shape. Cleaning and greasing it will probably be all I need to do (and plugging).

Thanks for reinforcing my thoughts.
Also, you probably want to mark the orientation of the IMS joint with the rack. It has splines so you can easily have it off by 1 or two "teeth". I forgot to do it so I just had to line things up without knowing the previous orientation. Trying to think of other things but its a pretty basic / intuitive project. Good luck.

Never tried a plugged power rack, but manual is the way to go for "drivers". I liken the power steering to automatic shifting. It's just another barrier between you and the car. IMHO!
bonus12 is offline  

Thread Tools
Search this Thread
Quick Reply: THE BONUS GUIDE: Manual Steering Rack Cleaning, Regreasing, and Tensioning


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: