Rear Axles for this vehicle consist of the following components:
• | Differential Axle Housing |
• | Right and left Axle tubes |
• | Right and left axle shafts |
These axles are either Full-Floating or Semi-Floating.
These axles can be identified as follows: The Semi-Floating Axle has
axle shafts with C-Clips inside the differential carrier on the inner
ends of the axle shafts. The Full-Floating Axle has bolts at the
hub retaining the axle shafts to the hub assembly. The axles can be identified
by the stamping on the right side axle tube They may also be identified
by the ring gear size. The ring gear sizes include 8.60, 9.50, 10.50 and
11.50 inch axles. The locking differential information for these rear axles
can be located in the locking differential section.
A open differential has a set of four gears. Two are side gears and
two are pinion gears. Some differentials have more than two pinion gears.
Each side gear is splined to an axle shaft so each axle shaft ; so each
axle shaft turns when it's side gear rotates. The pinion gears are mounted
on a differential pinion shaft, and the gears are free to rotate on this
shaft. The pinion shaft is fitted into a bore in the differential case
and is at right angles to the axle shafts. Power is transmitted through
the differential as follows: the drive pinion rotates the ring gear. The
ring gear being bolted to the differential case, rotates the case, The
differential pinion, as it rotates the case, forces the pinion gears against
the side gears. When both wheels have equal traction, the pinion gears
do not rotate on the pinion shaft because of input force on the pinion
gear is equally divided between the two side gears. Therefore, the pinion
gears revolve with the pinion shaft, but do not rotate around the shaft
itself. The side gears, being splined to the axle shafts and in mesh with
the pinion gears rotate the axle shafts. If a vehicle were always driven
in a straight line, the ring and pinion gears would be sufficient. The
axle shaft could be solidly attached to the ring gear and both driving
wheels would turn at equal speed. However, if it became necessary to turn
a corner, the tires would scuff and slide because the differential allows
the axle shafts to rotate at different speeds. When the vehicle turns a
corner, the inner wheel turns slower than the out wheel and slows it's rear
axle side gear (as the shaft is splined to the side gear). the rear axle
pinion gears will roll around the slowed rear axle side gear, driving the
rear axle side gear wheel faster.