Yukon Gear Crush Sleeve Eliminator Kit For GM 10.5in 14 Bolt Truck
If you are setting up new gears or pinion bearings in a GM 10.5 in. 14-bolt from a Chevrolet or GMC 2500 or 3500 pickup, a Suburban or an Express or Savana van, and you want pinion preload that will not loosen under a heavy trailer, this kit replaces the factory crush sleeve with a solid spacer. Yukon Gear & Axle part number SK CSGM14T contains a precision-machined solid spacer and a matched pinion shim kit, so you set preload by shim thickness instead of by how far a sleeve collapses.
The 14-bolt pinion rides on two tapered roller bearings in the nose of the housing, with a small pilot bearing on the inner end. The gap between the two main bearing races sets their preload, the drag you feel when you turn the pinion with an inch-pound torque wrench. GM holds that gap with a crush sleeve, a soft steel tube that shortens as you tighten the pinion nut. It works, but it is a one-shot part. Overshoot the preload and the only fix is a new sleeve. A sleeve can also relax over time under heavy loads and pinion yoke impacts, and once preload is lost the pinion moves, the gear pattern walks and the axle starts to whine.
The solid spacer in this kit does not collapse. You build the stack, torque the pinion nut, read the rotating torque, and adjust by swapping shims. Yukon's published setup table for the 14T 10.5 with pin support lists 20-35 in-lb of pinion preload for new bearings and 8-11 in-lb for used, 6-11 thousandths of backlash, 120 ft-lb on the ring gear bolts and 135 ft-lb on the carrier caps.
Drain the oil and look at it. Fine glitter is normal wear; flakes or chunks mean a bearing is failing. Grab the yoke and push it in and out. Any end play means preload is gone, and the pinion bearings should be replaced, not just re-tightened. If the bearings are worn, order them with this kit; the Yukon pinion install kit for the 1998-up 14-bolt has the bearings, races and pinion seal, and this spacer replaces the crush sleeve it includes.
SK CSGM14T is made for the GM 10.5 in. 14-bolt semi-float truck axle, the 14-bolt rear used under GM 3/4-ton and 1-ton pickups, SUVs and vans. Retailer fitment lists vary on year coverage, and the 14-bolt was revised in 1998-1999 with different pinion bearings, so check your axle before ordering. Confirm you have a 10.5 in. ring gear and 14 cover bolts. The AAM 11.5 used on many 2001-up GM heavy-duty trucks also has 14 cover bolts but is a different axle and is not covered. If you are unsure, send us the year and VIN and we will confirm the fit.
For a full rebuild, the 14-bolt master overhaul kit covers both pinion and carrier bearings. Many owners also replace axle bearings and seals with the AK GM14T kit while the shafts are out, and finish with a new 14-bolt cover.
| Brand | Yukon Gear & Axle |
| Part number | SK CSGM14T |
| Fits | Yukon Gear Crush Sleeve Eliminator Kit For GM 10.5in 14 Bolt Truck |
| Type | Differential Bushings |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. SK CSGM14T is a solid spacer and pinion shim kit only. Bearings, races and the pinion seal come in a pinion install or master overhaul kit.
No. It is made for the GM 10.5 in. 14-bolt. The AAM 11.5 used on many 2001-up GM heavy-duty trucks is a different axle even though it also has 14 cover bolts.
Yukon's setup table for the 14T 10.5 with pin support lists 20-35 in-lb for new pinion bearings and 8-11 in-lb for used bearings, measured as rotating torque on the pinion nut.
A crush sleeve cannot be backed off if you overshoot preload, and it can relax under heavy loads. A solid spacer with shims can be adjusted as many times as needed and holds preload once set.
Use 75W-90 or 75W-140 gear oil. Add friction modifier only if a limited-slip carrier calls for it.
