Rear Diff. ???'s.........
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Cargo Master
Joined: Mar 2008
Posts: 2,975
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From: Archdale,N.C.
Rear Diff. ???'s.........
Ok guys,I have the gears and everything to fix my rear diff.,Now,do i need to replace "all" seals,or maybe just if its been leaking?I wasn't sure if removing the axles will always destroy the seals.Thanks.....
Cargo Master
Joined: Jun 2003
Posts: 3,292
Likes: 6
From: Ardenvoir, Washington
Here is a link for a 9" ford rear end rebuilding info.. Probably different than yours, but you can get some good info on rebuilding from this article..
Ford 9 Inch Rebuild/Gear Setup .: Articles
Ford 9 Inch Rebuild/Gear Setup .: Articles
still plays with trucks
Joined: Mar 2004
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From: Twin Falls Idaho
Phil. I'd do the axle seals also. When you pull rear hubs you probably won't harm the seals, But----- if they go, it gets oil all over the rear brakes and could make you do half the work over again. Pinion seal, absolutely...look real hard at the E-brake shoes also.
Barney
Barney
Senior User
Joined: May 2009
Posts: 161
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From: Canton, Georgia
There is no need to change the axle seals unless they are leaking. If you are replacing the ring & pinion only, you don't even have to remove the wheels. Just unbolt the axles & slide them out.
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Cargo Master
Joined: Mar 2008
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From: Archdale,N.C.
Phil. I'd do the axle seals also. When you pull rear hubs you probably won't harm the seals, But----- if they go, it gets oil all over the rear brakes and could make you do half the work over again. Pinion seal, absolutely...look real hard at the E-brake shoes also.
Barney
Barney
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Joined: Jun 2003
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From: Damon (South East Texas)
There are large O-rings on the axle flanges. This would be considered the "outer" seal. Mine were still pliable, so I just reused them. No leaks. Just unbolt them, like said ^, and pull out far enough to remove the diff carrier. You will not be disturbing the "inner" axle seal and there is no need to, unless you are removing the hub. I had one leak several years ago and the other is still original, along with e-brks (160K + miles). I do keep another seal on hand for emergencies. At the time, no parts house had them in stock and it was on a Sunday.
Phil,
Are you replacing the ring and pinion, too? Or, just the carrier assembly?
Phil,
Are you replacing the ring and pinion, too? Or, just the carrier assembly?
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Cargo Master
Joined: Mar 2008
Posts: 2,975
Likes: 19
From: Archdale,N.C.
There are large O-rings on the axle flanges. This would be considered the "outer" seal. Mine were still pliable, so I just reused them. No leaks. Just unbolt them, like said ^, and pull out far enough to remove the diff carrier. You will not be disturbing the "inner" axle seal and there is no need to, unless you are removing the hub. I had one leak several years ago and the other is still original, along with e-brks (160K + miles). I do keep another seal on hand for emergencies. At the time, no parts house had them in stock and it was on a Sunday.
Phil,
Are you replacing the ring and pinion, too? Or, just the carrier assembly?
Phil,
Are you replacing the ring and pinion, too? Or, just the carrier assembly?
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Joined: Jun 2003
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From: Damon (South East Texas)
Is there something wrong with the ring and pinion also? It would be a whole lot easier to swap the ring gear to the "new" carrier and reinstall. I would prefer to keep the r&p's in matched sets.
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Cargo Master
Joined: Mar 2008
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From: Archdale,N.C.
If i replace the R/P and carrier from the new set i just got,wouldn't that be matched? I figured changing everything out from the newer set would be better since it has only 86,000 miles compared to my 197,000 miles.
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Cargo Master
Joined: Mar 2008
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From: Archdale,N.C.
Well,i'm gonna use the bearings from the new set,i was told by the guy i got the new set from it would be best to use the shims from the truck.He said if i used the same shims there shouldn't be much adjustment if any at all as long as the shims went back the exact way they come out.....Thoughts
Lead Driver
Joined: Jun 2003
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From: Damon (South East Texas)
Well,i'm gonna use the bearings from the new set,i was told by the guy i got the new set from it would be best to use the shims from the truck.He said if i used the same shims there shouldn't be much adjustment if any at all as long as the shims went back the exact way they come out.....Thoughts
Elder User
Joined: Dec 2009
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From: Fort Campbell, KY
Well,i'm gonna use the bearings from the new set,i was told by the guy i got the new set from it would be best to use the shims from the truck.He said if i used the same shims there shouldn't be much adjustment if any at all as long as the shims went back the exact way they come out.....Thoughts
You'll also need and in/lb wrench and a pretty big ft/lb wrench. Do you have experience setting up a differential, or some good documentation? I'd hate to see you do all this work and than have it fail in 500 miles
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