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MODEL 6 0 , 6 0 M AND 70 A X L E S S E R V I C E
INDEX
Page
Axle Shaft— Removal/Installation . . . .
34
Complete Axle Removal/Installation . . . . . . . . . . . .
35
General Information
. . . . . 33
Lubricants
55
Page
Standard Differential Service
36
Trac-Loc Differential Service
52
Wheel Bearing Service
35
GENERAL INFORMATION
The axle housing for Model 60, 6 0 M a n d 70 rear
axles (Figs. 1 and 2) consists of an i r o n center cast-
i n g (differential housing) w i t h axle shaft tubes ex-
t e n d i n g from either side. T h e axle shaft tubes are
pressed into and welded to the differential housing t o
f o r m a one-piece axle housing. A l l three axles have a
hypoid gear differential and t h e centerline o f t h e
drive p i n i o n gear shaft i s located below t h e center-
l i n e o f the r i n g gear. T h e removable, stamped steel
cover located a t the rear o f the differential housing
provides a means for inspection and for d i f f e r e n t i a l
service w i t h o u t r e m o v i n g
t h e complete
rear
axle
f r o m the vehicle.
A small, stamped m e t a l axle gear r a t i o identifica-
t i o n t a g is attached t o t h e housing cover v i a one o f
the cover bolts. This t a g also identifies the number of
r i n g gear and drive p i n i o n gear teeth.
The drive p i n i o n gear shaft rotates w i t h i n two t a -
pered r o l l e r bearings (Figs. 1 and 2). The drive p i n -
ion gear shaft rear bearing is t i g h t l y "press-fitted" on
the drive p i n i o n gear shaft. The d r i v e p i n i o n gear
shaft f r o n t bearing
is very
l i g h t l y
"press-fitted"
(which is s i m i l a r to a "close, s l i d i n g f i t " ) on the drive
pinion gear shaft. The drive p i n i o n gear shaft front
and rear bearing cups are "press-fitted" i n the differ-
ential housing bore and against a recessed shoulder.
The drive p i n i o n gear shaft depth o f mesh adjust-
ment is controlled b y the use of m e t a l depth shims
DIFFERENTIAL
COVER
CONE
CUP
SHAFT
YOKE
NUT LOCK
(TAP IN PLACE)
/ V ,
rw
SLINGER
/
OIL SEAL
WASHER
XT
NUT
Fig. 1 Model 60 & 60M Axle—Exploded View
8903-19
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