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

LinkBack Thread Tools Display Modes
Old 07-07-2013, 06:03 PM
Registered User
Join Date: Jun 2011
Posts: 210
'85 300TD rear drive/wheel clunking

I posted about this a while back but never looked into the issue.... my wagon is experiences a scraping/clunking noise from the rear right wheel area. Its only after driving for at least an hour and at 65+ mph. I used the car as a daily driver for 45 miles one way for six months, never hearing a problem. But once I hit the highway for a road trip, the scraping/clunking only occurs when already driving a while.

I also notice that it tends to go away as soon as I let off the gas. Coasting there is no noise.

So far as soon a I park, then hit the road after a few minute break, it goes away for a half hour maybe or more.

I resealed and cleaned the brake calipers and otherwise don't know what is causing this. Might it be brake related? I don't know if the rear wheel rotates freely or if the brake caliper is acting up still. I'm wondering if its maybe a drive axle problem?

My predicament is that I'm moving 250 miles away and hope to get the car driven to my destination.... right now its my only drivable car since my sedan has a rusted torn rear suspension arm. Until I get that fixed I'm hoping my wagon can at least go the one trip then handle errands until I get the sedan's rear suspension swapped.

Any ideas what the wagon's scraping/clunking might be? Might it be internal gearing or torn teeth on the driveaxle somewhere? I have a rear differential and the axles from a 300SD but don't know if those are compatible... I think the SD is a bit wider based than the TD.

Someone before suggested that the boots may be torn and the axle need decreasing, as long as its not damaged yet.... I'm on the road now and hope it'll go another 150 miles home.
Reply With Quote
Old 07-07-2013, 06:36 PM
t walgamuth's Avatar
Join Date: Apr 2005
Location: Lafayette Indiana
Posts: 34,153
could be cv joint. Put the car in a position that you can get under it with itin neutral and fixed so it will not roll over you and reach up and try to wiggle the half shaft up and down. It should slide in and out a bit but not up and down at all. Also look at the rubber boot. If the boot is bad dirt can get in and will soon ruin a good cv joint. the cv's don't last forever but they do last a good long time if kept clean and lubed.
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
Reply With Quote
Old 07-07-2013, 07:59 PM
vstech's Avatar
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,287
ok... there are a few things that could be causing this. axle is one, but the differential is another. also, the swaybar links can plop down and hit things making noise.
SECURE the vehicle, and raise the rear up, and pull the fill plug on the diff. stick your finger in there and see if it's got clear fluid in it. *(Careful! if you've recently driven anywhere, the oil will be HOT) check the axle for play as suggested by t walgamuth.
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote


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 05:59 PM.

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