Wesmanw02

iTrader: (4)

Just rebuilt the entire rear end of my car a couple months ago, its a factory 7.5" 10 bolt. The original Auburn diff exploded so I replaced everything.

New parts included Motive 3.42 gears, Detroit TrueTrac diff, Moser axles, new c-clips, all new Timken bearings, and new seals.

The problem is there is excessive endplay in the axles, meaning there is too much clearance between the inner end of the axle shaft and the "spacer" inside the diff. So every time I come around a turn hard, the axles slide inward or outward, and often cause pad knockback.

Anyone else running a TrueTrac diff and having this problem??

The only solution I can think of is to have a machine shop make a new spacer that is wider so it takes up the play between the two axles.

CamaroZ28_LS1

iTrader: (5)

That's weird. You can't shim the axles or use thicker C-Clips?

Wesmanw02

iTrader: (4)

I was considering that, but do you know where I could find thicker c-clips for a 7.5"??

I've only ever seen one standard size.

CamaroZ28_LS1

iTrader: (5)

Not sure... maybe moser has them if they made your axles.

CamaroZ28_LS1

iTrader: (5)

^ I don't think you realize this is the same replies to your other post on another site lol... was bored and wanted to entertain myself hehehe

Wesmanw02

iTrader: (4)

I figured it was too conincidental that I was getting the same replies

guppymech

iTrader: (7)

Could it be that the C clip groove is machined in the wrong spot on the Moser axles?

CamaroZ28_LS1

iTrader: (5)

I find that hard to believe... I just think there needs to be a thicker C-Clip in place.

ssvert99

iTrader: (26)

Have you compared the stock axles to the Moser axles to see if the groove is the same width and the button on the end of the axle is the same thickness as the stock ones? if so, then the problem is most likely the spacer in the Truetrac.

Wesmanw02

iTrader: (4)

I compared them briefly when I installed them, but I didn't actually measure the c-clip groove.

However, after reading some threads from thirdgen.org on the same issue, it appears the Moser axles may have c-clip grooves that are wider than stock, which would cause the issue.

The solution one guy came up with was to use external snap rings to take up the space between the c-clip and it's groove. He placed the snap rings in the outer most part of the c-clip groove and then placed the c-clip on the inner side near the side gear. This effectively took up the slack and tighened up the endplay to a very acceptable .005". The snap rings are made of "spring steel" and are apparently quite strong, he reported no issues after extensive testing with the snap ring setup.