readymix
3/4 ton status
I put anti-sieze on the threads of the pinion.
CK5
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10-bolt crush sleeve... 5/15/2008 - Update post #63
- Thread starter jonrpick
- Start date
That's what I meant... anti-seize, not grease.
Ok...
First off, many many thanks to Deadlew.
He sent me two new crush sleeves. Unfortunately, they were too small to fit the pinion shaft. Easy mistake, they look like a perfect fit.
So, then in a grand gesture of brotherhood, he sent me a crush sleeve eliminator kit.
This thing makes it soooooo easy...or should.
Problem is, I can't get the right amount of preload. I'm either way low (about 5 in/lbs) or a bit too high (over 25 in/lbs).
You wouldn't think it, but .002" of shim makes a huge difference.
What are the practical limits of preload on the pinion bearings?
BTW, Here's a chart... I the two middle sections with "under" or "over" represent the two closest settings I can get...
First off, many many thanks to Deadlew.
He sent me two new crush sleeves. Unfortunately, they were too small to fit the pinion shaft. Easy mistake, they look like a perfect fit.
So, then in a grand gesture of brotherhood, he sent me a crush sleeve eliminator kit.
This thing makes it soooooo easy...or should.
Problem is, I can't get the right amount of preload. I'm either way low (about 5 in/lbs) or a bit too high (over 25 in/lbs).
You wouldn't think it, but .002" of shim makes a huge difference.
What are the practical limits of preload on the pinion bearings?
BTW, Here's a chart... I the two middle sections with "under" or "over" represent the two closest settings I can get...
I tested preload "dry", with no gear oil or anything...
The dial on the torque wrench was pretty jumpy. I'm going to lube the bearings and try again.
Edit: Update... Thanks to Jbo214... He just happened to call. He was the one who suggested I put some gear oil on the bearings. That's how he does it at the Chevy dealership he works at. The preload immediately dropped down to about 17 in/lbs, and I got a much more consistent reading than before. No jumpy needle on the torque wrench gauge.
The dial on the torque wrench was pretty jumpy. I'm going to lube the bearings and try again.
Edit: Update... Thanks to Jbo214... He just happened to call. He was the one who suggested I put some gear oil on the bearings. That's how he does it at the Chevy dealership he works at. The preload immediately dropped down to about 17 in/lbs, and I got a much more consistent reading than before. No jumpy needle on the torque wrench gauge.
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Make sure you're reading dynamic resistance (i.e the reading the wrench says while the pinion is spinning) and not the static resistance (the reading the wrench will read to get the pinion to start moving in the first place).
deadlew
1/2 ton status
Jon,
From the sounds of it I would run the .581. 17 inch pounds will be good. Also the more the bearing break in the lower the preload will become.
PaulC
From the sounds of it I would run the .581. 17 inch pounds will be good. Also the more the bearing break in the lower the preload will become.
PaulC
True... I'll tweek a little more, but I think I'm good now. This was much easier to deal with, although I'm sure others would prefer a crush sleeve since you only have to put it together once.
I don't have a large torque wrench to read the 250 lb/ft that was suggested in the instructions (for torquing down the pinion nut). I did put the nut on with an impact gun though (although not a "strong" one). It didn't seem to want to tighten anymore. I'll borrow/rent a real torque wrench for final assembly.
Good to see you're moving along.
Family in town right now so I'm not getting sh!t accomplished...
Family in town right now so I'm not getting sh!t accomplished...
wasted wages
1 ton status
X2
It's a 10-bolt.
Although, this isn't a complicated part. Call Randy's, see what they have.
deadlew
1/2 ton status
Randy's doesn't have them. I tried to find them and haven't yet.
PaulC
PaulC
