Differential id ?

[bigflew]

Can anyone tell me what model rear end my M1009 has? I know its a gm 10 bolt with a eaton gov loc but I need to order new berrings and such. I took a drive around lake Michigan (1200 miles worth) and at the end I noticed a growl in the rear end so I took the cover off all looks good but there is some rust on the gears (oil is good) so I would like to have all new berrings in hand befor I take it apart.
any way is it a 8.5 inch or what?

 

[hndrsonj]

Heck it might be easier to just swap the whole rear end.Rear Axle Assembly, Chevy/GMC, U.S. G.I. [750201] - $395.00 :: Colemans Military Surplus LLC - Your one-stop surplus store with Army/Navy products for hunting gear, camping gear, emergency products, and survival products
I seem to remember someone in MI that had several NOS units cheap, don't remember who it was though. Can't help with the ring diameter, I thought all the 80's 10 bolt's were the same diameter?

 

[scrambled]

It is the 8.5 inch ring gear.

If the gears are too rusted or pitted, new bearings won't fix your growl. Ususally, the growl is from cutting a new wear pattern in the gears after they moved slightly due to a bad bearing. Check the teeth on the ring gear. if the top edge has a sharp feel to it, they have been worn out.

You can still run them for a long while, but they will remain noisy.

Travis