1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
1948-1952 Shop Service Manual - - Hudson-Essex-Terraplane Club
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REAR AXLE 11 - 17<br />
DESCRIPTION<br />
This rear axle is of the semi-floating type and employs<br />
a housing assembly made up of a cast malleable iron<br />
central housing into the hubs of which are pressed and<br />
welded, flanged steel tubes. The differential and drive<br />
gear assembly and the drive pinion and its bearings are<br />
mounted directly in the housing on tapered roller bearings<br />
provided with shim adjustments . Access to the<br />
mechanism is through a cover bolted to the housing at<br />
the rear. A filler plug is fitted to the cover and a drain<br />
plug at the bottom of the housing.<br />
The differential is of the two pinion type using a solid<br />
one-piece case with the drive gear attached by bolts held<br />
in place by lock plates. The differential side gears operate<br />
in the case bores and have treated steel thrust washers<br />
Installed between gear an d case thrust faces. The differential<br />
pinions operate directly on the pinion shaft which<br />
is secured in the differential case by a locking pin passing<br />
through case and shaft. Treated steel thrust washers are<br />
used between differential pinion s and case. Axle shaft<br />
end thrust is taken by a cylindrical spacer through which<br />
the pinion shaft passes. Shims placed on the differential<br />
hubs between the differential bearing cones and the<br />
shoulders control the side mesh of the drive gear teeth<br />
with the pinion as well as the amount of "spread" or<br />
pre-load on the differential side bearings.<br />
REAR AXLE<br />
(Removable Cover Type)<br />
wick and hydraulic leather oil seal prevent oil loss at the front<br />
of the pinion.<br />
The axle shafts have fine splines machined at the inner<br />
ends to engage the differential gears and are tapered at the<br />
outer ends to receive the rear wheel hubs. They are supported<br />
by tapered roller bearings having straight bore cones seating<br />
against shoulders on the shafts, with the outer cups pressed<br />
directly into the housing. Axle shaft end play and wheel<br />
bearing adjustment are controlled by a shim pack placed<br />
between the axle housing flange and the brake backing plate<br />
on the right side only. Inner oil seals pressed into t he housing<br />
prevent lubricant entry into the bearing compartment while<br />
leather oil seals in the seal caps prevent leakage of wheel<br />
bearing lubricant.<br />
SPECIFICATIONS<br />
Gear Ratio: 3.07 - 1<br />
Drive Gear - 43 teeth, Pinion - 14 teeth Axle Shaft End Play:<br />
.001" to .004"<br />
Gear Tooth Back Lash: .003" to .008"<br />
Housing Spread for Servicing: .020" (Maximum) Differential<br />
Side Bearing Pre-Load:<br />
.005" - .009" Drive Gear Run-out: .003" (Maximum)<br />
Drive Pinion Turning Torque: 10 to 20 inch lbs.<br />
SHIM THICKNESS<br />
Front Pinion Bearing Shims:<br />
.003", .005", .010" and .030"<br />
The drive pinion roller bearing cups are pressed into the<br />
housing with shims placed between the front face of the rear<br />
bearing cup and the housing, to control the fore and aft position<br />
of the pinion and its mesh with the drive gear. Another shim pack<br />
placed between the rear face of the front bearing cone and the<br />
shoulder of the pinion, controls the adjustment and pre-load of the<br />
pinion shaft bearings. Lubrication of the differential and drive<br />
pinion mechanism is accomplished by lubricant forced by the<br />
drive gear through passages cast in the housing. An oil slinger, felt<br />
wick<br />
Rear Pinion Bearing Shims:<br />
.003", .005", and .010"<br />
Differential Bearing Shims:<br />
.003", .005", .010" and .030"<br />
Wheel Bearing Shims:<br />
.003", .005", .010" and .030"<br />
LUBRICATION: S.A.E. 90 Hypoid or multipurpose gear<br />
lubricant - 3 pounds.