Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Vintage Mercedes Forum

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 04-13-2013, 08:49 AM
Registered User
 
Join Date: Sep 2011
Posts: 238
Drive shaft mount replacement - difficult?

I need to replace one of the drive shaft support/mount/bearing on my 69 w115. It's the center one of the 3 if I recall. I have the new support/mount, have to order the bearing. I have a book that describes the process of replacement. Can someone tell me just how challenging it can be?

Chris
__________________
1969
Model 220 gasoline
Chassis: W115.010
Reply With Quote
  #2  
Old 04-13-2013, 02:16 PM
junqueyardjim's Avatar
Registered User
 
Join Date: Apr 2005
Location: Cicero, Hamilton County, Indiana about 30 miles north of downtown Indianapolis
Posts: 2,597
Not if you don't mind getting your car up and off the ground where you can work under it in safety. Looks like a drop them down and the shaft will slip out of the spline section, replace the bearing and holder and put it back up. It is always a good idea to mark the shafts very clearly, so that the line up is the same when it is put back together. Probably can be done with just one socket also.
__________________
Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!
Reply With Quote
  #3  
Old 04-13-2013, 03:32 PM
Pooka
 
Join Date: Sep 2005
Posts: 664
This is a rather easy, but time consuming, task.

Of course you will have to put the car up as high as you can get it, and you might have to drop out the exhaust system, but the real important thing is to mark the driveshafts so they can be lined up in the original positions. The entire three piece drive shaft is balanced as a unit from the factory, and it is almost impossible to find anyone with the equipment to balance a three piece shaft today.

Also.... Watch out for the little weights on the shaft. These are square pieces of metal that were tap welded on. If they fall off then put them back on with super glue. They will fall off if you drop the shaft while you are removing it.

The coupling of the shafts is also held together by some large nuts on the shaft. I have used a large pipe wrench to break these loose. You will see what I am talking about when you get in there.
Reply With Quote
  #4  
Old 04-13-2013, 04:58 PM
Registered User
 
Join Date: Sep 2011
Posts: 238
Do the bearings need to be pressed in/presssed out by a machine shop?
__________________
1969
Model 220 gasoline
Chassis: W115.010
Reply With Quote
  #5  
Old 04-13-2013, 05:36 PM
junqueyardjim's Avatar
Registered User
 
Join Date: Apr 2005
Location: Cicero, Hamilton County, Indiana about 30 miles north of downtown Indianapolis
Posts: 2,597
No they will just slide right on, with a nice fit.
__________________
Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!
Reply With Quote
  #6  
Old 04-13-2013, 05:57 PM
Registered User
 
Join Date: Sep 2011
Posts: 238
What holds the bearing in the rubber mount/support, just a snug fit?
__________________
1969
Model 220 gasoline
Chassis: W115.010
Reply With Quote
  #7  
Old 04-14-2013, 01:15 PM
Pooka
 
Join Date: Sep 2005
Posts: 664
Sort of. The entire driveshaft will come apart in sections, but when it is all assembled, as it is when it is installed in the car, everything fits in there pretty tight.

There is a big nut that must be removed from the end of each section of the shaft so the shaft can be slipped out of the bearing, but really the answer to your question is.... Yeah, they just sort of fit in there.

The theory behind the carrier bearing is the bearing starts to go and then it starts to tear at the carrier, sometime called the spider, until the carrier is torn up and you hear the rumbling. The bottom line is that this prevents the bearing from getting so hot that it melts to your drive shaft. So it makes a terrible noise and will eventually beat a hole through your floor, but replacing the bearing on the shaft is normally pretty easy.
Reply With Quote
  #8  
Old 04-14-2013, 05:17 PM
Registered User
 
Join Date: Sep 2011
Posts: 238
ThankS! I am wondering if only 1 of the 3 has gone bad, should I replace the other two bearings on the other to carriers/spiders . . . ?
__________________
1969
Model 220 gasoline
Chassis: W115.010
Reply With Quote
  #9  
Old 04-14-2013, 06:46 PM
whunter's Avatar
Moderator
 
Join Date: Dec 2003
Location: Metro Detroit, Michigan
Posts: 17,350
Answer

Quote:
Originally Posted by Topher39 View Post
ThankS! I am wondering if only 1 of the 3 has gone bad, should I replace the other two bearings on the other to carriers/spiders . . . ?
If they are less than perfect, YES.
You really don't want to pull the drive shaft repeatedly for the same job.
These links should help you.

W126_Rubber Boot_drive shaft center support bearing

W126 drive shaft carrier/center bearing DIY

PeachPartsWiki: Driveshaft Support (carrier) Bearing Replacement


.
__________________
ASE Master Mechanic
asemastermechanic@juno.com

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Prototype Vehicle build.
Prototype Fleet Durability
Prototype vehicle instrumentation.
Technical Quality Auditor.
Automotive Technical Writer

1973 300D
1973 309D - stolen
1978 280SE
1980 240D
1983 300D
1984 190D
Reply With Quote
  #10  
Old 04-14-2013, 08:28 PM
meltedpanda's Avatar
Certified Benzaholic
 
Join Date: Mar 2003
Location: Central Ky
Posts: 6,086
really this is done best on a lift , you need room to move around, lower things and an extra set of hands helps too....
Good luck
__________________
Ron
2011 Porsche Cayman - Bond,James Bond
99 E320 THE Queen Mary
62 220b - Dolly - Finally my Finny!
72 450SL, Pearl-SOLD
16 F350 6.7 Diesel -THOR
07 Lexus RX 350 - Lexi
14 38HP John Deere 3038E Tractor -Mean Green
84 300SD, Benjamin -SOLD
71 220 - W115-Libby ( my first love) -SOLD
73 280 - W114 "Organspende" Rest in Peace
81 380 SL - Rest in Peace
Reply With Quote
  #11  
Old 04-15-2013, 01:52 AM
Tony H's Avatar
Tony
 
Join Date: Oct 2005
Location: Bandon, Oregon
Posts: 951
If you deceide you want your u-joints replaced while the shaft is out "Driveline Service of Portland" can rebuild your shaft with servicable u-joints. I had them rebuild my 3 piece shaft. They specialize in German vehicles.

Driveline Service - Mercedes Driveshafts
__________________
Tony H
1971 280SE 3.5 Coupe(soon to be 5.6)
European Version
Manual transmission
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 02:57 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page