1942 - 1947 Chevrolet Shop Manual



	4-17



	Fig. 32-Two-Speed Rear Axle

	Tighten down the cap screws and recheck the ring gear and pinion back lash with a dial gauge as shown in Fig. 30. Assemble and tighten the adjusting nut locks. 6. Examine the bronze tip of the ring gear thrust pad and, if worn, install a new one. 7. Install the thrust pad and tighten the screw until the bronze tip lightly engages the back of the ring gear while rotating gear. Back off the screw one-twelfth (1/12) of a turn and then tighten the lock nut. making sure the screw does not turn during the locking process. This will provide .005" to .007" clearance, Fig. 31. Reassembly of Rear Axle 1. Clean out axle housing and cover. Install the third member assembly in the axle housing, with a new gasket between the carrier and the housing. Install the cap screws and tighten them securely. 2. Assemble the axle shafts, using a new aluminum gasket between the axle shaft flange and wheel hub. Install the bolts through a new	locking plate and pull them down tight. Lock the bolts by bending the tangs on the locking plate firmly against each bolt head. 3. Assemble the rear universal joint. 4. Replace the axle housing cover and gasket, 5. Fill the rear axle with eleven (11) pints of lubricant of the type recommended in the Lubrication Section. TWO-SPEED REAR AXLE CONSTRUCTION The internal mechanism of the 2-speed rear axle is of the double reduction type, Fig. 32. There is the spiral bevel ring gear and drive pinion reduction, which operates in combination with either of two sets of helical spur gears to produce the selected slow or fast speed reduction. The drive pinion is mounted on two tapered roller bearings and the spiral bevel ring gear is locked on the double reduction shaft by a tapered spline. The double reduction shaft turns on tapered roller bearings.