Chevrolet Light Duty Truck 1973 Service Manual page 243

12-1/4" Ring Gear Axle
(11,000 Pound Capacity)
The 11,000 lb. capacity, single-speed hypoid axle,
illustrated in figure 37, has a straddle mounted drive
pinion which is supported at the rear by a straight roller
bearing. The pinion front bearing consists of a double
row ball bearing.
The differential is a conventional four-pinion type.
Thrust washers are used between the side gears and case
Fig. 37— 12-1/4" Ring Gear Axle—11,000# Capacity
and also between differential pinions and the differential
case.
A thrust pad mounted on the end of an adjusting screw
threaded into the carrier housing limits deflection of the
ring gear under high torque conditions.
Involute splines are incorporated in the axle shaft flange
and in the wheel hubs. This design provides for the
driving torque to be transmitted from the axle shaft to
the hub through the mating splines.
REAR S U S P E N S IO N A N D DRIVELINE
LIGHT DUTY TRUCK SERVICE MANUAL
4 - 1 9