Carrier bearing preload ??

CMcAllister · 10-27-2024, 04:18 PM

If you don't have the luxury of a good selection of solid shims, I like the good adjustable shim packs. You can measure what came out of it, take a few thou off each side, to get a starting point,

With the pinion set and the turning torque of that known, start with shim packs that allow you to tap them in with some drag, making sure the bearings are seated. Install and snug the caps each time. Checking BL each time, move shim from one side to the other to move the carrier as needed. Fine tune the pattern as you get the BL where it needs to be.

When you get everything where you want it, load an equal amount of shim to each side to get the desired preload. I like to add 6-8 lbin to the total turning torque for a race set. Shim pack should go in snug with a soft wide faced drift or better yet, a tool with an internal radius to fit the shims. Not so tight that you damage the shims. I don't use a spreader to put it together. Final check and confirm the pattern

This has worked for me for years.

10-27-2024, 04:18 PM	#6
CMcAllister Senior Member Join Date: Sep 2006 Location: Fulton County, PA Posts: 614 Likes: 16 Liked 920 Times in 259 Posts	Re: Carrier bearing preload ?? If you don't have the luxury of a good selection of solid shims, I like the good adjustable shim packs. You can measure what came out of it, take a few thou off each side, to get a starting point, With the pinion set and the turning torque of that known, start with shim packs that allow you to tap them in with some drag, making sure the bearings are seated. Install and snug the caps each time. Checking BL each time, move shim from one side to the other to move the carrier as needed. Fine tune the pattern as you get the BL where it needs to be. When you get everything where you want it, load an equal amount of shim to each side to get the desired preload. I like to add 6-8 lbin to the total turning torque for a race set. Shim pack should go in snug with a soft wide faced drift or better yet, a tool with an internal radius to fit the shims. Not so tight that you damage the shims. I don't use a spreader to put it together. Final check and confirm the pattern This has worked for me for years.