Hudson 1938 Terraplane, Owner'S Manual

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O W N E R' S M A N U A L 63
The helical bevel drive gear and pinion are made of nickel molybdenum Electric
Furnace steel, heat-treated for strength and case-hardened to resist wear. The
drive pinion, differential and axle shafts are carried by six heavy-duty, taper roller
bearings.
Exceptional lubrication has been provided to the drive pinion bearings by arrang-
ing a large passage to carry oil thrown from the ring gear to a point in the housing
between the front and rear pinion bearings. This oil flows through the bearings and
returns to the axle housing. Oil leakage at the front of the pinion is guarded :against by
the use of a hydraulic leather oil seal. Similar seals are located in the wheel bearing
caps.
Rear Wheel Bearing Adjustment
To adjust rear wheel bear-
ings, jack up rear axle and remove both
rear wheels and hubs. Remove the four
nuts from bearing cap (A), Figure 55, and
push the bolts out of the backing plate to
permit removal of the bearing cap without
disturbing the hand brake operating link.
By removing shims
(B) under the cap, the
end play of the axle shaft is decreased.
Total play between axle shafts should be
from .005" to .010", which is perceptible
by pulling shaft in and out with the hand.
It is necessary that the thickness of shims
at each rear wheel be approximately the
same, so, when adjusting, remove a thin
shim from each side and repeat, Figure 55
if necessary, until only a slight amount of
play is evident. Be sure the axle shafts turn freely before building up.
CAUTION
Under no condition should a knock-out type puller be used to remove a
wheel hub or the end of the axle shaft struck a heavy blow.
BRAKES
The brakes on the Hudson Terraplane car are hydraulically operated, with sup-
plementary actuation of the rear brake shoes from both the foot pedal and hand brake
control. See Figure 56.
A master cylinder, Figure 57, incorporating compensating features, is mounted on
the pedal mounting bracket and is accessible by lifting the left side of the hood. The
master cylinder has an integral reservoir from which additional fluid is supplied to the
system as necessary.
It is essential that the reservoir be kept at least half full at all times to prevent the
possibility of air entering the system. Genuine Hudson Hydraulic Brake
Figure 52