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The Rear Axle Assembly
How is the Rear
Axle removed? Answer No. 77
Jack up car and remove rear wheels as instructed in Answer No. 89. Take out
the four bolts connecting the universal ball cap to the transmission case and
cover. Disconnect brake rods. Remove nuts holding spring perches to rear axle
housing flanges. Raise frame at the rear end, and the axle can be easily withdrawn.
How is the Universal Joint disconnected from the Drive
Shaft? Answer No. 78
Remove two plugs from top and bottom of ball casting and turn shaft until pin
comes opposite hole, drive out pin and the joint can be pulled or forced away
from the shaft and out of the housing.
How are Rear Axle and Differential disassembled?
With the universal joint disconnected, remove nuts in front end of radius rods
and the nuts on studs holding drive shaft tube to rear axle housing. Remove
bolts which hold the two halves of differential housing together. If necessary
to disassemble differential a very slight mechanical knowledge will permit
one to immediately discern how to do it once it is exposed to view. Care
must be exercised to get every pin, bolt and keylock back in its correct
position when reassembling.
How is the Drive Shaft Pinion removed? Answer No. 80
The end of the drive shaft, to which the pinion is attached, is tapered to
fit the tapered hole in the pinion, which is keyed onto the shaft, and then
secured by a
cotter-pinned "castle" nut. Remove the castle nut, and drive the
pinion off. 81
How is the Rear Axle
Shaft removed?
Disconnect rear axle as directed in Answer No. 77, then unbolt the drive shaft
assembly where it joins the rear axle housing at the differential. Disconnect
the radius rods and brake rods at the outer ends of the housing. Take out the
bolts which hold the two halves of the rear axle housing together at the center
and remove the housing. Take the inner differential casing apart and draw the
axle shaft out.
After replacing the axle shaft be sure that the rear wheels are firmly wedged
on at the outer end of the axle shaft and the key in proper position. When
the car has been driven thirty days or so, make it a point to remove the hub
cap and set up the lock nut to overcome any play that might have developed.
It is extremely important that the rear wheels are kept tight, otherwise the
constant rocking back and forth against the keyway may in time cause serious
trouble.
If the rear axle or wheel is sprung by skidding against a curb, or other accident,
it is false economy to drive the car without correcting the trouble, as tires,
gears and all other parts will suffer. If the axle shaft is bent, it can, with
proper facilities, be straightened, but it is best to replace it.
THE REAR AXLE A S S E M B L Y 39
How are the Differential
Gears removed?
The differential gears are attached to the inner ends of the rear axle shaft.
They work upon the differential pinions when turning a corner, so that the
axle shafts revolve independently, but when the car is moving in a straight
line the differential pinions and differential gears and axle shafts move as
an integral part. If you
The Ford Emergency Brake. (Cut No. 15)
will examine the rear axle shafts you will notice that the gears are keyed
on, and held in position by a ring which is in two halves and fits in a groove
in the rear axle shaft. To remove the differential gears, force them down on
the shaft, that is away from the end to which they are secured, drive out the
two halves of ring in the grooves in shaft with screw-driver or chisel, then
force the gears off the end of the shafts.
Axle Housing Cap Hub Key
Coil Spring
Hub Brake Cam
Axle Shaft
Hub Brake Shoe/
Answer No. 79
138