Section 13 (Drive Axle - Front): Description

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The axle used on "K"Series models has a 4WD center disconnect feature which allows shifting in or out of four wheel drive under most conditions while vehicle is in motion. Axle is shifted by a thermal actuator solenoid contained within right axle tube. See Fig 2 and Fig 3 .

The right drive axle consists of a solid axle shaft which rides inside of a stationary axle tube. A short stub shaft with a CV joint is bolted to inner axle shaft flange. Left drive axle consists of a flexible drive shaft using an inner tripod joint and outer CV joint. Left axle tripod joint housing bolts to axle carrier drive flange. CV joint/spindle on outer end of drive shaft slips through steering knuckle/hub assembly. See Fig 1.

The axle uses a conventional ring and pinion gear set to transmit the driving force of engine to the wheels. Gear set transfers driving force at a 90 degree angle from drive shaft to drive shafts.

Axle is produced with 8 1/4" ring gear (used on K10/20 Series) or 9 1/4" ring gear (used on K30 Series), with minor differences between the 2.

Fig 1: Left Drive Axle With Tripod & CV Joints

Courtesy of GENERAL MOTORS CORP.

Fig 2: Exploded View of K10/20 Series Front Axle Assembly

Courtesy of GENERAL MOTORS CORP.

Fig 3: Exploded View of K30 Series Front Axle Assembly

Courtesy of GENERAL MOTORS CORP.