Crush sleeve eliminator for 14b 9.5 sf

[carlosa]

I decided I didn`t want a crush sleeve on my regear .. so this is how I did it.



First I ordered a bunch of 35mm x 45mm shims from McMaster in thicknesses from 2mm down to .01mm

Setting up on the lathe

The pinion has a really small shoulder near the base where the crush sleeve sits, I turned that off til the shims would slide over it

One of the 2mm shims needed to be turned down a tiny bit - I went to 43mm so that it would clear the bearing cage of the outer pinion bearing - i glued it onto the shoulder temporarily to turn the outside of it

Now that 2mm shim fits right into the bearing surface and clears the cage - other shims would be stacked below this one

And finally the stuff goes together .. will attempt to permanently set the exact preload tomorrow and see how it goes. I used a crush sleeve eliminator on my front 10 bolt and liked the way it preloaded.

 

[Blue85]

Since you're in it... What ID tubing would fit on the pinion? I'm wondering if there's a solution where a piece of tubing or industrial spacer would basically replace the crush sleeve (towards the minimum expected length) and then apply a stack of normal 14B s/f shims (or equivalent) to get to the right thickness. Somebody could cut those pieces of tubing on a lathe (or other precision method) and essentially sell it as a CSE.

 

[carlosa]

Since you're in it... What ID tubing would fit on the pinion? I'm wondering if there's a solution where a piece of tubing or industrial spacer would basically replace the crush sleeve (towards the minimum expected length) and then apply a stack of normal 14B s/f shims (or equivalent) to get to the right thickness. Somebody could cut those pieces of tubing on a lathe (or other precision method) and essentially sell it as a CSE.

It would be closer to 36mm inside diameter. Someone could turn out a short 40-45mm spacer then used shims on top of that just as well.

 

[tarussell]

Kudos for ditch’n the crush sleeve setup no matter how it’s done - they’re nothing but a timesaver shortcut during assembly at the expense of quality and durability.

When Dana ( I realize yours is an 14B-S/F ) changed the D60/70’s over to a crush sleeve design in the 90’s but kept the pinion shims for preload on the D80’s was a clear indication that the crush sleeve left something to be desired.

 

[carlosa]

Agreed. I’ve also encountered a few of these that have worn the crush sleeve or over stressed it and caused extra wear.