If you have to drive your 4x4 daily, a limited-slip differential may be just the ticket for enhancing your vehicle's off-highway capability while retaining its pleasing day-to-day driveability. A ...

Backlash, a clearance between mating gear teeth, is built into speed reducers to let the gears mesh without binding and to provide space for a film of lubricating oil between the teeth. This prevents ...

Backlash, pinion depth, tooth pattern, pinion and carrier-bearing preload—what does it all mean? When used in reference to an automobile, these terms usually apply to the rearend (or differential) and ...

Begin final setup assembly by oiling the rear pinion support bearing, side bearings and races, bearing cap holes, spanners, and all case threads. For initial setup, use a .019-inch-thick pinion shim, ...

You never know when a carrier will fail or if it ever will fail. After 10 winters in New Hampshire, our ’05 Rubicon Unlimited exhibited a major case of rust rash, but we never expected it to attack ...