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 > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 07-05-2012, 10:30 AM
Registered User
 
Join Date: Dec 2005
Posts: 2,275
Will Rear Brake rotor overheating comprimise bearing grease?

Last week I got the rotors cherry hot on an 84 300cd from rear calipers sticking ,replaced pads ,calipers and master brake cylinder and everythings up to snuff. Now Im worried after overheating the rotors with the severe heat that the rear bearing grease might have melted away leaving the bearings somewhat dry ,has anyone experienced this issue. It looks like 2 special tools will be needed to get at these bearings .Anyway to supply grease without taking the axels out ? looks like a sealed bearing .
Reply With Quote
  #2  
Old 07-05-2012, 10:42 AM
engatwork's Avatar
busy
 
Join Date: May 2000
Location: Soperton, Ga. USA
Posts: 11,939
Is it making any noise that is unusual?
__________________
Jim
Reply With Quote
  #3  
Old 07-05-2012, 10:53 AM
Vice President of Snark
 
Join Date: Nov 2009
Location: Austin, TX
Posts: 1,203
The rear bearings are sealed. While the grease may have been compromised due to overheating, unless you see leakage from around the backside of the trailing arm where the axles are inserted, I don't think you'd lose any...

Post your location and see if anyone has the castle socket to remove those.
__________________
'85 300TD "Puff The Magic Wagon" - On the road again!
'95 E300d - 110K Looking for a new home
'15 Volvo XC70 T6 - Wife's sled
'84 300TD "Brown Betty" - Miss this one
'81 240D "China Baby" - Farm grocery getter
Reply With Quote
  #4  
Old 07-05-2012, 10:53 AM
Registered User
 
Join Date: Dec 2005
Posts: 2,275
Not yet ,just like to beat the chance of it going out while driving.Houston area.
Reply With Quote
  #5  
Old 07-05-2012, 11:48 AM
Registered User
 
Join Date: Nov 2010
Location: TX
Posts: 3,380
wheel bearing grease would be OK as they are pretty much sealed, your big concern should be to replace the brake fluid.
__________________
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)
Reply With Quote
  #6  
Old 07-05-2012, 12:22 PM
Registered User
 
Join Date: Jun 2000
Location: Plano, TX
Posts: 2,517
I had this same failure on an '84 300D I owned a good while back. Although I was concerned about the wheel bearings, I never serviced them due to the inconvenience and specialized tools required. They lasted the remaining life of the car. IIRC, the "event" happened in 1995. I sold the car to a friend in 1999. He drove it until rust and a failed transmission took it off the road in 2004 or 2005? So the bearings lasted at least 100K miles, probably more.
Reply With Quote
  #7  
Old 07-05-2012, 01:19 PM
Registered User
 
Join Date: Mar 2009
Location: San Diego
Posts: 2,846
Hope this will alleviate your worry. My 300D rear brake bind and overheated to the point the rubber dust cover caught fire. I put it out with a fire extinguisher. Bind at least 2 more times afterward. Replaced the MC and I have driven the car 4K miles since with no issue with rear bearing.

However, individual experience may be different. So it is your call at the end of the day.
__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

2 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.
Reply With Quote
  #8  
Old 07-06-2012, 11:16 AM
Registered User
 
Join Date: Dec 2005
Posts: 2,275
Thanks for the replies ,I plan a trip to the hill country this August in the 300cd and hope to take some video while cruisen thru the canyons.
Reply With Quote
  #9  
Old 07-06-2012, 03:17 PM
Diesel911's Avatar
Registered User
 
Join Date: Sep 2007
Location: Long Beach,CA
Posts: 24,383
Quote:
Originally Posted by jcyuhn View Post
I had this same failure on an '84 300D I owned a good while back. Although I was concerned about the wheel bearings, I never serviced them due to the inconvenience and specialized tools required. They lasted the remaining life of the car. IIRC, the "event" happened in 1995. I sold the car to a friend in 1999. He drove it until rust and a failed transmission took it off the road in 2004 or 2005? So the bearings lasted at least 100K miles, probably more.
Yes, too much work to replace the Grease unless there is a know issue.

If you use the Factory Method; Silde Hammer to remove the Hub it damages the Bearings.
Then near the end of it if you over tighten it and the end play is too tight you get to start over and damage the Bearings again.
__________________
84 300D, 82 Volvo 244Gl Diesel
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 05:35 AM.


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