<< 5 I think the rearend in mine is worn out because it is very sloppy and
loose,
should I rotate it with the tight front end so they both spin backwards? Do
all 151/A1/A2 differentials swap out, or did they make a quieter heavy duty
model for later mutts?
Thanks! Mike in VA >>
Mike, just for the record......there's no such thing as a "quiet" mutt
differential. They all make some degree of noise. Even the Technical Manual
(the -34) advises that "some noise can be expected, due to the way the diff is
mounted".
What you can do is :-
1. swap the front differential (usually little-worn) for the rear diff
(usually well-worn):
2. Before mounting each diff, get hold of six MB/GPW body-mounting pads (they
are the square "conveyor-belt" rubber-coated webbing blocks, with a hole in
the centre). Fit one of these pads on each stud before mounting the
differentials, then bolt the diff in place and use loctite or similar on the
threads. Check the tightness after a few hundred miles.
The use of these mounting pads will significantly reduce the amount of
differential noise transmitted through the body. Just try it.
ps.... There are adverts for the "1100-series differentials, new-in-box" etc.
Don't necessarily assume that these will cure your noise problem. It's the
METHOD of mounting rather than the type of differential.
In 1980 I went (in my M151A1) to visit the US Army's Reserve Storage Activity
at Butonwood. The base had over 2,000 Mutts in storage. I was chatting to the
chief mechanic about my Mutt and I happened to mention that "my diffs howl a
bit". He pointed to the line upon line of mutts in store and growled "Ken,
show me one that doesn't !!!"
I didn't pursue the matter further.
Kind regards.....
Ken
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