b. Planetary Wheel Ends. The planetary wheel ends provide the second gear reduction at the wheel hub. Planetary
axles permit the bevel gearing of the carrier, and the axle shafts to carry nominal torsional load while providing
the highest practical numerical gear reduction at the wheels.
The spur teeth of the planetary sun gear (1) mesh with teeth of the planetary gears (2). The planetary gears rotate
on planetary pinion shafts (3) which are
mounted on the planetary cover (4). The planetary gear (2) teeth, in turn,
mesh with the teeth of the planetary ring gear (5).
Power is transmitted through the axle shafts to the sun gear, through the revolving planetary gears (1 and 2) and
into the planetary cover (4) which drives the wheel hub.
Section II. FRONT AXLE MAINTENANCE PROCEDURES
FRONT AXLE MAINTENANCE TASK SUMMARY
Front Axle Assembly Replace/Repair
Axle Pivot - Replace
Front Differential Carrier Assembly - Replace/Repair/Adjust
Front Planetary Wheel Ends - Replace