Re: [MV] M37 drivetrain & 1100x16 tires

From: uniquemachine (uniquemachine@air1.net)
Date: Sun Nov 11 2001 - 08:44:03 PST


It could be a bad u-joint, excessive backlash in the ring and pinion, or bad
carrier or pinion bearings. Also, if the driveshaft has a slip joint, it could
have excessive play.

Jon

> The old 900x16 NDTs on my '51 M37 were bald and dry rotted,
> so I replaced them with a set of 1100x16 Michelin XLs.
>
> Been extremely happy with the tires so far, but have
> had a few snafus and wanted to see what peoples'
> experience/suggestions were.
>
> The truck went into the shop to get a front end alignment.
> Wound up replacing the front axle housing- the old one
> was bent, causing the camber to be off by more than degrees.
>
> While they were in there, they wound up replacing a worn
> pinion gear in the front diff. Seeing the front diff open,
> the idea to put a Lock-Rite in the rear end came up while
> talking with the guy in the shop.
>
> To make a long story short, I wound up replacing a few
> parts shortly after putting the truck back on the road.
> The carrier in the rear diff needed replacing because the
> bolt holes that ring the carrier had been ovaled out
> (they went from approximately no.2 pencil size to about 3/8").
> Because I hadn't looked at the carrier initially, I don't know
> whether this happened in the one day I was driving the truck
> after the first trip to the shop or not.
>
> The current hypothesis is that the original 1951 axles in
> the rear end were sheared when the carrier failed. They were
> replaced with some tempered steel axles from John Bizal at MidWest Military.
> I've been very happy with them.
>
> Got the truck back on the road. Was driving it around for a
> while today and started noticing a single ping/bang when taking
> off from a stop in 2nd gear. 3rd gear gets it as well, but not
> as pronounced. It's coming from the back of the truck, but since
> I can't drive the truck and be in the bed simultaneously, I am
> only guessing when I say it's coming from the diff. Is this
> indicating imminent carrier failure?
>
> Hopefully somebody has had this experience before...
>
> Ideas? Suggestions?
> John
>
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