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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-26-2007, 07:35 PM
Registered User
 
Join Date: Jul 2006
Posts: 59
Exclamation 300E Flex Disk Replacements

I am trying to narrow down sources of vibrations in my 1986 300e. I know for certain that the differential mounts are toast. I will have to get the car into the indy to take care of those, but I noticed that the rear flex disk has a crack leading from one of the bolts to the exterior of the disk. I assume that means it is time for a new one, and I like to do packages of things, so I would like to do the front and the bearing at the same time.

Questions:
  • Are there any special tricks to replacing the flex disks?
  • Should the center bearing be replaced at the same time?
  • Does the bearing just slide off the end of the shaft?
  • Can a guy do this by himself without a lift?
  • Can two guys do this without a lift?
  • Will the shop doing the rear diff mounts be in a good position to replace any of these parts?

Thanks for all your help! And thanks for helping me make a good W124.

I'm sorry to ask a question that I am certain has come up before, but I wasn't finding a straight set of answers using the search.


Last edited by brandob9; 12-27-2007 at 02:33 AM.
Reply With Quote
  #2  
Old 12-26-2007, 09:15 PM
Registered User
 
Join Date: Oct 2002
Location: Toronto, Canada
Posts: 700
For sure you can do it yourself with a few basic tools and some decent ramps.
2 guys will be even better.
The most important tool is patience, the flex disc bolts are self locking so you're best of putting them on once, but if you do have to undo them and redo them again, use thread lock, they also strip easily with threadlock, so be careful.

Before you dissassemble everything, spend some time looking over the driveshaft, it looks simple, but there are some marks on it that will need to line up if you want a smooth ride. The front dlex disc is much harder access wise, and with the rear flex disc on, the front one will not clear the transmission.

Not too sure about diff mounts, but I imagine with the shaft off, it would be real easy to do.

The bearing will come out on its own, but you might as well get the center support since if you try to pull out the old bearing from the support, it will most likely fall apart, so save yourself a headache, get the support as well as the bearing and do it all up in one shot.

So, key points, inspect everything closely, take off the support bearing, take off the rear flex disc, then the front, then do the diff mounts, and install everything in reverse order paying attention to the marks on the driveshaft.

It'll be like a new car after you do this right, count on it.

xp
__________________
1985 190E 2.3L - a constant project.
Reply With Quote
  #3  
Old 12-27-2007, 02:32 AM
Registered User
 
Join Date: Jul 2006
Posts: 59
Quote:
Originally Posted by xp190 View Post
Before you disassemble everything, spend some time looking over the driveshaft, it looks simple, but there are some marks on it that will need to line up if you want a smooth ride.
Is that to say that I don't need to worry about the relative position of the disks themselves? (Assuming that they are facing front to back correctly)
Reply With Quote
  #4  
Old 12-27-2007, 09:08 PM
Registered User
 
Join Date: Oct 2002
Location: Toronto, Canada
Posts: 700
The flex discs are marked as to which way they are supposed to face relative to the car, but other then that they go any which way.

xp
__________________
1985 190E 2.3L - a constant project.
Reply With Quote
  #5  
Old 12-29-2007, 09:43 AM
Gerard's Avatar
91 300CE M103: 80 450SEL
 
Join Date: Nov 2001
Location: Dublin, Ireland
Posts: 112
writing on flex-disc

Quote:
Originally Posted by xp190 View Post
The flex discs are marked as to which way they are supposed to face relative to the car, but other then that they go any which way.

xp
Yes, isnt it usually "zu getriebe" (or something like that in German), which means this side to face the gearbox.
Reply With Quote
  #6  
Old 12-29-2007, 11:18 AM
Registered User
 
Join Date: Aug 2003
Location: Phoenix
Posts: 3,726
I have no idea if it's necessary but I have always replaced them in exactly the same position, down to the position of the writing. Once you get a red magic marker down there and start marking things it's not that hard to do.
Reply With Quote
  #7  
Old 01-06-2008, 08:58 PM
Registered User
 
Join Date: Jul 2006
Posts: 59
Two more questions:

Does anything pass through the center of the disks, or does all of the car's power go through the disk itself?

Do I need to worry about disconnecting anything on the driveshaft beyond the six bolts per disk?

Thanks for your help!
Reply With Quote
  #8  
Old 01-06-2008, 11:01 PM
cummins's Avatar
Total and Utter GEARHEAD
 
Join Date: Feb 2007
Location: Casper, Wyoming
Posts: 84
All the power is transferred through the disks. And the six bolts per disk is all there is until you do the support and bearing. And two guys would be good, I think you would be able to do the diff mounts yourself and save the shop fees, They're not all that difficult. a couple of ramps, or a floor jack and some jack stands. Good luck and have fun!!
__________________
Thanks, Nels
_________________________
86 300E
93 W250 4X4 Cummins Power
72 F250 Highboy
89 S-10 408ci BBC
custom V Four Chopper
77 Peterbilt 352
83 Jeep CJ-5
Reply With Quote
  #9  
Old 01-06-2008, 11:26 PM
Registered User
 
Join Date: Jul 2006
Posts: 59
Quote:
Originally Posted by cummins View Post
...until you do the support and bearing.
What is involved with those?

I'm just trying to make sure the two guys in question are armed in advance.
Reply With Quote
  #10  
Old 01-07-2008, 10:23 AM
cummins's Avatar
Total and Utter GEARHEAD
 
Join Date: Feb 2007
Location: Casper, Wyoming
Posts: 84
A hammer to tap the old one off, unless you have a press and a piece of pipe to install the new bearing, and i believe the 2bolts take a 15 mm socket.

__________________
Thanks, Nels
_________________________
86 300E
93 W250 4X4 Cummins Power
72 F250 Highboy
89 S-10 408ci BBC
custom V Four Chopper
77 Peterbilt 352
83 Jeep CJ-5
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 05:27 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, 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