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#1
02-09-2020, 07:11 AM
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1981 w123 diesel rear end knocking
The car has 75k from new (!). The SLS system has been overhauled and works perfectly and has new accumulators. The sway bar mounts and control links are new. The diff mount is new.
When I go over smallish bumps there is occasionally a dull thunk from the rear. Riding in the back it seems to be more central than on one side and almost sounds like the entire rear axle is loose. The front mounts for the sub-frame are new as well btw. The flex disks are almost new too. Does anyone have ANY ideas what I can check next. Using a crowbar I can't find anything that moves underneath either. thanks 
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#2
02-09-2020, 07:44 AM
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Check out your trunk for loose spare or tools.
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#3
02-09-2020, 08:08 AM
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It could be that the axles need to be shimmed. Grab them and see if there is any movement in and out of the differential. It doesn't take much to make a clunking sound. Search on here for axle shims. If you just changed axles your old shims may still be on the old axles, otherwise they are available from the dealer.
__________________
1985 300 TD 448K 1984 300 TD 278K 1983 240D euro 240k 1994 f-250 idi turbo 330K 1986 f-350 IDI 1987 F-350 IDI 1985 JD 1050 4wd 1965 IH 3660
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#5
02-09-2020, 02:12 PM
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I Want To Learn
...So I subscribed to this thread .
__________________
-Nate 1982 240D 408,XXX miles Ignorance is the mother of suspicion and fear is the father I did then what I knew how to do ~ now that I know better I do better
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