Manual

Background Informaon

The dierenal case is the round housing inside the rear

axle assembly to which the ring gear is bolted and which contains

the dierenal spider and side gear assembly. It is installed in

the dierenal carrier, which is the housing that holds the case,

drive pinion gear, bearings, etc. The carrier may be removable

(as part of a “drop-out” unit, or third member), or it may be in-

tegral (as a permanent part of the axle assembly, mounted in the

vehicle). This manual covers the removable third member, tech-

nically known as the Dierenal and Carrier Assembly.

The LOCK-RIGHT is designed to t into standard open

dierenal cases only, not into limited-slip (clutch-pack) type

cases. If your vehicle contains a limited-slip unit you will need to

purchase a standard open dierenal case, thrust washers and

pinion sha before proceeding.

A word about axle sha thrust blocks: A few dieren-

als use a thrust block between the inside ends of the axle shas

as a part of the end play adjustment. When installing a LOCK-

RIGHT, this block is re-used along with the original axles so that

the original end play adjustment does not change. However, if

the original axles are changed to dierent original-type axles, the

block will connue to be used but the end play must be re-adjust-

ed (see the shop manual for the procedure). If the axle is changed

to another type that does not need end-play adjustment, such as

a one-piece design, the thrust block may be omied.

A word about side gear thrust washers: All dierenals

originally had a thrust washer under each side gear. Thrust wash-

ers are large in diameter and between about 1/32-inch (.031, or

0,76-mm) and 1/16-inch (.062, or 1,52-mm) thick. If either one

or both are missing from the original dierenal, obtain new

one(s) before proceeding! The LOCK-RIGHT is designed to be

used with a correct thrust washer under each coupler, and failure

to use this washer is easy to observe during inspecon and will

void the warranty.

NOTE: The parts shown in the various gures are typical

and may not exactly depict your parcular model.