Section 7 (Drive Axle - Front): Description

WARNING: This page is about a different variant/trim than selected.

NOTE: This article contains information on 2 slightly different front axle assemblies, one for K2 vehicles and the other for K3 vehicles.

Differential contains a conventional ring and pinion gear set. Right side of axle assembly consists of a solid axle shaft that rides inside of a stationary axle tube. A short stub shaft with CV joint attached is bolted to right inner axle shaft flange. Left drive axle shaft consists of a flexible drive shaft using an inner tripod joint and outer CV joint. Left axle tripod joint housing is bolted to axle carrier output shaft drive flange. CV joint splined/threaded shaft on outer end of drive axle shaft slips through steering knuckle/hub assembly. See Figure.

A thermal actuator solenoid on the right axle tube allows the front axle to be shifted into or out of 4WD while the vehicle is moving (under most conditions). See Figure or Figure . The solenoid contains a coil, fluid, and plunger. When current from the 4WD in/out select switch passes through the coil, heat causes the fluid to change to gas, extending the plunger. This engages or disengages the front axle.