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Re: [oletrucks] crush sleeve

To: jforbes@primenet.com, oletrucks@autox.team.net
Subject: Re: [oletrucks] crush sleeve
From: Passnb4U@aol.com
Date: Tue, 27 Mar 2001 23:25:37 EST
In a message dated 3/27/01 1:35:28 PM Pacific Standard Time, 
jforbes@primenet.com writes:

<< Wayne--
 If you use a new crush sleeve, you don't really need
 to use a torque wrench to tighten the nut...because
 it will take more than the minimum torque to crush
 the sleeve!  So, you tighten the nut until the slack
 is just about gone, then tighten it just a little
 bit more, and check the bearing preload, then
 tighten a little more and check, etc, till you get
 the preload you need. 
 To check the preload, you MUST do it from the pinion
 nut!  not the drums.  Also, you need to take out the
 axles and carrier to replace the crush
 sleeve...because you need to pull the front pinion
 bearing off to get to it, and the pinion bearings
 are a press fit on the pinion stem.  So, you pull
 out the carrier, pull the yoke off the pinion (using
 an appropriate puller), and then drive the pinion
 out of the housing (to the rear).
 To measure the pinion preload, you need a small
 torque wrench, of the dial or beam type (a clicker
 won't work).  Inch pounds...not foot pounds!  12
 inch pounds equals one foot pound.  So the desired
 pinion bearing preload is one to two foot pounds.
 This looks like a hassle, doesn't it?   :)   no
 wonder most folks farm out rearend work.
 Jim F
 59s in AZ
 > Hi Jim,
 >   Thanks for all the info and of course that does pose another question...
 > I've looked through some driveline sites and found that the pinion bearing
 > preload should be about 14-19 inch lbs, do I just use the monster wrench to
 > crush the sleeve and test occassionally till it takes 14-19 ft lbs to turn
 > the drums through the rearend? Meaning i use an ordinary torque wrench on
 > the pinion nut and see how much it takes for it to move while letting the
 > yoke turn freely?  Thanks again...  wayne >>


  I might add to Jims instructions, that the preload is moving/rotation 
torque, not breakover torque...i/e, don't measure the preload as how much it 
take to get the pinion to turn, but instead, measure the amount it takes to 
keep the pinion turning.

oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959

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