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  1. W164 M-Class
    I just swapped an engine and I am left over with a hose that is attached to the front differential and have no clue where it goes. Thought I went in all directions to check but still can’t figure it out. Any help would be highly appreciated. It is a rubber hose coming from the front differential...
  2. W124 E,CE,D,TD Class
    Anyone have any ideas what size the plug is on the rear diff in an 88 Benz 260E? It’s leaking a bit and I would like to add more gear oil. I’m thinking it’s a 14mm but I want to make sure before I run to town and buy the wrong thing.
  3. W210 E-Class
    I got a 2000 E320 4-Matic with the 3.2L V6. Im looking to change the transmission fluid (drain and fill with filter replacement including the connector), front differential fluid, rear differential fluid, and the transfer case fluid. here is the list of fluid from what I bought for the...
  4. V-Class 1996-
    Hello, It’s my first time posting here and my mechanical knowledge is limited so I welcome any help anyone can give me. I have owned my Vito cdi 109 2005 model for many years now and I love it and have a great attachment to it. I have an ongoing problem which is proving difficult to solve so I...
  5. W204 C-Class
    2008 Mercedes C300 4MATIC Hello everyone, I am new here and thought I would give this a try. I have this humming/grinding type of noise while I’m driving (gets louder as speed increases) that I can’t seem to diagnose. Sound seems to come from middle/front of the car, not the rear. Thinking it...
  6. W213 E-Class
    I have a 2019 e63s with 30,000km. The car has been modified to stage 2 with catless downpipes with 500kw to the wheels. I've never taken my car to the track nor do i drive it that hard, i launch the car maybe once every 1-2 weeks. The front differential has gone with what started as a light...
  7. Tire, Wheel, Brake and Suspension Forum
    Well I guess the title says it all! So, I have with me, a 2014 Merc Vito, (I'm in Australia) and I am wanting to convert it to 4WD, hence requiring a rear diff lock, and potential lift kit to fit all-terrain tires. The best info so far is that there may not be the exact compatible diff for this...
  8. W202 C-Class
    Hey guys, differential on my car blew up somehow. Bought a diff from eBay which they did not tell me that one of the flanges where the CV axle/half shaft bolts up to was taken off. Question is, how do I take them off my old one and install it on the new one?
  9. G-Class
    Hi, As part of diagnosing the non-locking rear and front differentials, I noticed that the vacuum pump never stops generating a vacuum. I went ahead and tested the vacuum at several points to isolate the culprit. Ended up identifying the faulty segment that is supposed to supply the vacuum to...
  10. W211 E-Class
    Hey everyone, I recently took a test drive with a 2007 E350 sedan. The car was well maintained and well cared for on first viewing. During the test drive, I heard a buzzing/humming noise coming from the back of the car when going over 50km/h (~30mi/h). The sound doesn't get worse at higher...
  11. W202 C36 AMG, C43 AMG
    A few years ago I purchased a running C36 as an engine donor for my G320 G-Wagon. I kept the major parts from the donor car. It came from WDBHM36E6SF181082 (WDB2020281F181082) • Transmission - 722328 04 085915 • Rear Differential with Acceleration Skid Control (ASR) • Subframe assembly with...
  12. W123 E,CE,D,CD,TD,TE Class
    I lurk in a few forums, read a ton, but haven't posted much. That's a tribute to the wealth on info out there. I've managed a lot of my own work over the short time we've finally owned a W123, but turbos are still a grey area to me. To be fair, a lot is until I get dirty and deal with it...
  13. R129 SL-Class
    I have a 1996 SL500 with about 22,000 miles on it.. About 1 in 10 times when I back out of a parking lot I hear a fairly loud clunking sound coming from the rear of the car. It is almost as if the differential does not quite mesh but snaps into mesh. I feel no hesitation, just a clunking...
  14. R129 SL-Class
    Hello All, I have a 94 sl500. Everytime that I have accelerated the vehicle (since about 4 months ago), the car makes a "Thud" sound that seems to be coming from the rear. I thought it was the engine mounts, but i opened the good while in Park and revved the engine, and the engine doesn't...
  15. W126 S,SE,SEC,SEL,SD,SDL Class
    Hello everyone, As most know, the manual for the W126 (specifically my 1988 420SEL) states that non limited slip diffs require 85W-90 fluid. I can find this weight but it’s rare and non synthetic “heavy duty”. I have synthetic Mobil 1 75W-90 but I am worried that the 75 is 10 lower than the...
  16. W124 E,CE,D,TD Class
    How’s it going everyone, I recently purchased a 91 300D. It was good for a thousand or so miles until I took a turn a little hard, heard a clunk, and then both wheels lost power. The drive shaft and one of the cv spun, but not the wheels. I recently replaced the cv axles with duralast cv axles...
  17. R129 SL-Class
    Hello, I recently purchased a '94 sl500, and I was wondering what differential oil to use? Thank you.
  18. W203 C-Class
    Hi Everyone! I am in a bit of a head scratching moment. My 2006 c230 sport has developed a weird vibration ONLY under the following circumstances: Throttle must be greater than 50% . Vibration starts EXACTLY at 4,000rpm and continues as you continue up the rev range. Vibration is consistent...
  19. G-Class
    Hi, My name is Paul and I found this forum looking for a solution to my problem on the web. Please delete if not allowed. My 230GE displays a red warning light I can only assign to a differential issue (picture attached). The light has been on for the past 2 weeks and I have been driving the...
  20. R/C107 SL/SLC Class
    I bought a really nice 1985 280SL recently... it's in great shape and runs well, but I'm working on a few things. One of those things is to overhaul the rear differential, which has a pretty good whine up around 60 or 70 mph. I don't have a shop manual (yet; I'm looking)... But in the...
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