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Jul 21st, 2025 | | | | Joined: Jan 2011 Posts: 35 New Guy | | New Guy Joined: Jan 2011 Posts: 35 | My differential carrier gasket was leaking, so I took it off and used Permatex to make a gasket and installed it. Also reinstalled the axles. It seems that I have now have a larger backlash then I had before my work. It is about 1/8 to 3/16 of an inch. Any ideas how this happened? And suggestions on how to fix it?
Brimmer
54 Chevy 3/4 ton | | | | | Joined: Aug 2004 Posts: 1,400 ODSS Lawman | | ODSS Lawman Joined: Aug 2004 Posts: 1,400 | Is this the stock open driveline?
SWEET Sergeant At Arms: Old Dominion Stovebolt Society BUNS?!?!?!Where we're going, we don't need no buns.....1950 GMC 450 1951 Chevy 1/2-TonThe GreenMachineIn the Stovebolt Gallery | | | | | Joined: Mar 2002 Posts: 9,112 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,112 | What backlash are you talking about? The work you have done would have no affect on anything except the oil leak. | | | | | Joined: Jun 2010 Posts: 301 'Bolter | | 'Bolter Joined: Jun 2010 Posts: 301 | Did you install a new crush sleeve and torque to proper settings?
1949 Chevy 3600
1975 W-25 Hurst Olds
1970 GMC 1/2 ton Fleetside
2010 Chevy Silverado
| | | | | Joined: Jan 2011 Posts: 35 New Guy | | New Guy Joined: Jan 2011 Posts: 35 | I did not do anything except take off the differential carrier, put on the gasket and then put the differential carrier back. I made no adjustment. What I think backlash is, is when you hold the axles firm and then rotate the u-joint coming out the differential. There is about a 1/8 to 1/4 of a inch of play.
It seemed less before I fixed the gasket.
Brimmer | | | | | Joined: Feb 2006 Posts: 1,867 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 1,867 | Is this the original rearend?
What did you use for gasket material? Did you make your own or buy a pre-made one?
Jeff | | | | | Joined: Mar 2002 Posts: 9,112 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,112 | The original post says that he used Permatex to make a gasket.
I don't think you should worry about that much rotational driveshaft movement with the wheels blocked. | | | | | Joined: Dec 2001 Posts: 14,522 Moderator: Welcome Centre, Southern Bolters, Legion Hall | | Moderator: Welcome Centre, Southern Bolters, Legion Hall Joined: Dec 2001 Posts: 14,522 | I have seen a LOT worse, Drive it. It'll last another 50 years just don't "snatch it" when going from forward to reverse or vise-versa. | | |
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