UK-1991-Z28

Hello every one, I own a 91 Z28 over in the uk. I decided to change the pads on the back end only to find i have what appears to be horizontal movement in the half shafts but at the moment only appears to be horizontal not vertical. Any one hear of this before? its about 1/4 inch play. Many thanks UK-1991-Z28

JamesC

iTrader: (5)

Welcome to TGO. A bit of play, because of the "C" clip, is normal.

JamesC

Saber

iTrader: (2)

UK-1991-Z28

Hi JamesC. Ok you must forgive me but this is my first camaro so please bear with me but what in the hell is a "c" clip and do i need to change them or just not worry about it as it's one of those things. Many thanks for the welcome and the advice
UK-1991-Z28 aka Chris

JamesC

iTrader: (5)

The C clip holds the axle in place. As long as they're in place, one per side, all's well. You'll find a pic (post #5) in the following FAQ:

https://www.thirdgen.org/forums/tran...ing-axles.html

JamesC

big gear head

The c clip goes on the axle on the end that is inside the rear end. There is a groove cut into the axle that the c clip goes in. You push the axle in and then put the c clip into the groove. Then you pull out on the axle and the c clip fits into a recess in the axle gear on that side. Then the cross shaft is put into the differential and it keeps the axle from moving out and letting the c clip fall out. There is always a little free play because the c clip doesn't fit tight in this groove. If you have the Auburn limited slip differential then as the cones in the differential wear the free play will increase. If you have close to 1/4 inch then you must have a lot of wear on the cones.

UK-1991-Z28

Had to change brake fluid today. It appears to me thst there is more movement than i thought is this still ok ? could it be bearings. Many thanks Guys

big gear head

Do you have the 10 bolt or 9 bolt rear end? Count the number of bolts holding the cover on to see which one you have. This is important because these rear ends use different methods of holding the axles in.

UK-1991-Z28

Im currently at work and the car is at home. All i can tell you is that it has a LSD at the moment if that helps

JamesC

iTrader: (5)

IIRC, some cars were equipped with the 9-bolt from 85-90, so your 91 'should' be a 10-bolt, if the rear is original to the car.

JamesC

UK-1991-Z28

It has a ten bolt rear end. I have ordered a rebuild kit but i need to find out what the torque should be when putting it back together.

big gear head

Did you order a new Auburn? If you don't replace the differential then you are still going to have the same amount of axle end play. I recommend getting a new Eaton Posi to replace the Auburn. It is a FAR better differential than the Auburn. This will take care of the axle end play. A new Eaton is $445.