1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club

REAR AXLE 11 - 1
SECTION 11
REAR AXLE
(Welded Cover Type)
SPECIFICATIONS
Drive Gear and Pinion Backlash
Pinion Bearings (Two)
Adjustment
Differential Bearing (Two)
Adjustment
.004" to .006"
Taper Roller
Shim
Taper Roller
Adjusting Nut
Wheel Bearings
Adjustment
Axle Shaft (End-Play)
Lubricant
Quantity
Taper Roller
Shim
.001" to .004"
S.A.E. 90 Multi-Purpose
(Gear Lubricant)
3-1/2 Pints
REAR AXLE RATIOS
Models 4B-5B
Standard Transmissions
With Hydra-Matic
3-7/12
- - - - -
Std.
4-1/10
Std
- - - - -
4-5/9
Opt.
- - - - -
Models 6B-8B
Standard Transmissions
With Overdrive
With Hydra-Matic
- - - - -
- - - - -
Std.
Std.
Opt.
- - - - -
Opt.
Std.
- - - - -
Model 7B
Standard Transmissions
With Overdrive
With Hydra-Matic
Opt.
- - - - -
Std.
Std.
Opt.
- - - - -
Opt.
Std.
- - - - -
CONSTRUCTION
The rear axle assembly is the semi-floating type with
Hypoid Helical gears mounted in a pressed steel banjo type
housing with adjustments provided for all bearings, ring gear
and pinion.
The drive pinion is supported by two tapered roller
bearings which are held in a correctly spaced position by the
pinion bearing spacer. Adjustment of the pinion and bearings
are provided for by a number of shims between the bearing
spacer and the front bearing and between the front face of the
pinion and the rear bearing. Oil leakage is prevented by a
hydraulic type, inner spring oil seal of chrome leather.
The ring gear is mounted on the differential case flange by
eight special alloy steel bolts. In order to insure quiet smooth
operation, the ring gear and pinion are supplied only in
matched sets.
The differential case assembly is suspended between two
tapered roller bearings, and is held securely by two carrier caps
and four bolts.
The splined end of the alloy steel axle shafts engage in the
differential side gears. The outer ends of the axle shafts are
tapered and are provided with keyways for attaching the rear
wheel hubs, which are supported by adjustable tapered roller
bearings pressed on the axle shafts. Side thrust from the
wheels is transferred from one shaft to the other by hardened
steel thrust buttons through the medium of the drive shaft
thrust spacer.
Rear wheel bearings are adjusted for end play by shims
inserted between the bearing caps and housing flange. Oil
leakage at this point is prevented by pressure type chrome
leather oil seals.
The axle housing is attached to the rear springs by means
of "U" bolts and is insulated to eliminate road and tire noise
by the use of rubber strips placed between axle and springs.
The general construction of the rear axle may be seen in the
illustrations which follow: