crush sleeve question
Thread Starter
Safety Car
Joined: May 2005
Posts: 4,176
Likes: 7
From: Jennings LA
crush sleeve question
I am changing my factory 2.59 gears in my '93 to a set of 3.75's I have all of the install kit except a seal and the crush sleeve, according to the dealer they don't offer a crush sleeve for the 2.59 ratio only the 3.45 ratio. will that one work
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
The crush sleeve is not associated with any particular gear ratio. The sleeve provides an accurate way to set the preload force on the pinion bearing which is the same for all gear ratios. Use the dealer crush sleeve.
Racer
Joined: Sep 2005
Posts: 271
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From: New Freedom PA
Crush sleeve
both gear ratio's have the same pinion shaft diameter , this is where the cruch sleeve is installed.
Desert
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Ratach sells the right size preload shims. Crush sleeves are garbage because you can't tighten the nut to the propper torque value. If you want a copy of the diagram out of the service manual I can post that page.
I just rebuilt my dana 2 days ago.
-- Joe
Thread Starter
Safety Car
Joined: May 2005
Posts: 4,176
Likes: 7
From: Jennings LA
Dana 36's do not use crush sleeves.
Ratach sells the right size preload shims. Crush sleeves are garbage because you can't tighten the nut to the propper torque value. If you want a copy of the diagram out of the service manual I can post that page.
I just rebuilt my dana 2 days ago.
-- Joe
Ratach sells the right size preload shims. Crush sleeves are garbage because you can't tighten the nut to the propper torque value. If you want a copy of the diagram out of the service manual I can post that page.
I just rebuilt my dana 2 days ago.
-- Joe
I did not see a crush sleeve in the service manual, this is what confused me, Ratech has one in their install kit for a Dana 36 here is the kit http://store.summitracing.com/partde...?part=RAT-342K
Chevy list one for the 3.45 ratio, is the 3.45 a different carrier?
Racer
Joined: Sep 2005
Posts: 271
Likes: 0
From: New Freedom PA
shims shown in installation kit
Dana 36's do not use crush sleeves.
Ratach sells the right size preload shims. Crush sleeves are garbage because you can't tighten the nut to the propper torque value. If you want a copy of the diagram out of the service manual I can post that page.
I just rebuilt my dana 2 days ago.
-- Joe
Ratach sells the right size preload shims. Crush sleeves are garbage because you can't tighten the nut to the propper torque value. If you want a copy of the diagram out of the service manual I can post that page.
I just rebuilt my dana 2 days ago.
-- Joe
Desert
Thread Starter
Safety Car
Joined: May 2005
Posts: 4,176
Likes: 7
From: Jennings LA
thanks, looking at the service manual it does not show a crush sleeve for a dana 36 or a dana 44. just 3 preload shims. maybe Ratech just has their terminology wrong. page 4B-2 in the FSM
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
I'm not 100% happy with my carrier preload. My advice to you is to measure how much shims you have on each side, and make sure the TOTAL THICKNESS gets put back when you are done. My rear was rebuilt once before me, and I think they omitted a shim to get the carrier in/out easier rather than using a spreader. I added about .010" but it still doesn't feel as "tight" as I think it should be. I wish there was a spec for rotational drag w/ the carrier in place. The way the FSM calculates preload and backlash is by using special carrier bearings called "master bearings".
I made a spreader rather than bought one, here is a picture:
http://members.cisdi.com/~anesthes/d...g-spreader.jpg
-- Joe
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Racer
Joined: May 2006
Posts: 293
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Originally Posted by gator79
I did not see a crush sleeve in the service manual, this is what confused me, Ratech has one in their install kit for a Dana 36 here is the kit http://store.summitracing.com/partde...?part=RAT-342K
Originally Posted by gator79
Chevy list one for the 3.45 ratio, is the 3.45 a different carrier?
Safety Car
Joined: May 2006
Posts: 4,290
Likes: 140
From: Salem NH
Once I got mine together I found GM discontinued the stupid color coded snap rings for yoke end play, I ordered them from Ikerd's at $48 shipped.
You'll more than likely have to move the carrier over enough to justify changing them out.
The only thing I didn't like about the ratech kit was the ring gear bolts. They didn't have washers. They looked cheesier than what I took out.
I measured backlash with the OLD bearings + new richmond gears. It was .012". The carrier didn't fit in my press, so I had to cut a slot in each bearing and split them off. Thats a pita!
When I took the carrier out it had:
LEFT: .049"
RIGHT: .040"
I then reassembled with:
LEFT: .054" +5
RIGHT: .042" +2
Which moved the carrier over a hair, and added a little bit of preload to the carrier bearings. (I didnt feel they were loaded enough).
I ended up with a .010" backlash which was dead on with what richmond wants (the thud feels a a bit much, but I checked it in 6 spots) and the pattern looks just wonderful.
Good luck!
-- Joe
You'll more than likely have to move the carrier over enough to justify changing them out.
The only thing I didn't like about the ratech kit was the ring gear bolts. They didn't have washers. They looked cheesier than what I took out.
I measured backlash with the OLD bearings + new richmond gears. It was .012". The carrier didn't fit in my press, so I had to cut a slot in each bearing and split them off. Thats a pita!
When I took the carrier out it had:
LEFT: .049"
RIGHT: .040"
I then reassembled with:
LEFT: .054" +5
RIGHT: .042" +2
Which moved the carrier over a hair, and added a little bit of preload to the carrier bearings. (I didnt feel they were loaded enough).
I ended up with a .010" backlash which was dead on with what richmond wants (the thud feels a a bit much, but I checked it in 6 spots) and the pattern looks just wonderful.
Good luck!
-- Joe
