Rear pinion question - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 09-15-2002, 03:20 AM
**DONOTDELETE**
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Rear pinion question

Hello all. Had the Burb out last night and noticed another strange noise to add to the list. Checked under the truck, and the rear yoke at the rear axle is moving around quite a bit. The u joint looks ok, it's the yoke assy. that's moving. The pinion shaft stays still and the yoke moves up and down when I push up on the driveshaft. I looked in the Haynes manual, but all it said was to mark the location and count the exposed threads on the pinion nut for use upon reinstalllation. This was info to replace the seal. Anyone know how this thing goes together, what the torque spec should be, etc? Is it possible that the pinion nut just loosened up, or is something really fubar'd? Thanks for any help guys, I'd really appreciate your input before I go and rip everything down. BTW, the truck in question is a 87 V1500 Sub w/3.73 ratio.

Thanks
Bob
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post #2 of (permalink) Old 09-15-2002, 10:09 AM
427jimmy
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Re: Rear pinion question

Well I don't think the yoke would loosen off. I had to use a 3/4" drive to bust mine loose and it was stubborn til the last thread. What kind of rear end is it??
post #3 of (permalink) Old 09-15-2002, 11:01 AM
**DONOTDELETE**
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Re: Rear pinion question

Pretty sure it's a 10 bolt, I'd have to check later. I found out that behind the yoke is the seal and the crush sleeve. I guess it's possible the crush sleeve got mangled or something. Anyhow, I'll post back later after I take it apart.
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post #4 of (permalink) Old 09-15-2002, 11:28 AM
87sm465np208
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Re: Rear pinion question

mine is like that too on my 10 bolt, floppy like that, yea i think somthin isnt right either, but oh well i guess its just how the 10 bolts are.
post #5 of (permalink) Old 09-15-2002, 01:15 PM
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Re: Rear pinion question

Think I figured out the problem. There's supposed to be a crush sleeve behind the yoke that preloads the pinion bearing as you tighten up the yoke nut. Somebody replaced the seal recently, and didn't put a crush sleeve back in. I took it apart and ordered a crush sleeve from the parts store, tomorrow I'll find out the torque value for the nut and put it all back together. Doesn't look like the spline wore bad enough to replace the yoke, so there's some good luck!
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