The front differential is a basic design and is similar what other makes use, such as Ford and Toyota. Before the rebuild, I searched but, could not find any technical specifications for preload or backlash.2005 Toyota 4Runner Rear Differential Rebuild - Bearing Replacement. ThePracticalMechanic. 2002 Toyota Tacoma TRD 2WD with Locker vs. 4WD - 4x4TV Tests.