Buick LeSabre 1965 Service Manual page 382

6-16
REAR AXLE
DIFFERENTIAL CASE
(FLANGE HALF)
PINION
SHAFT
THRUST
WASHER
CONE
BRAKE
HEX HEAD
CAP SCREW
THRUST
WASHER
DIFFERENTIAL
CASE
(CAP HALF)
F i g . 6 - 3 6 — Positive Traction Differential—Exploded V i e w
and it will release before exces-
sive driving force can be applied
to one wheel.
CAUTION: When working on a
car with Positive Traction Dif-
ferential, never raise one rear
wheel and run the engine with the
transmission in gear. The driving
force to the wheel on the floor
could cause the car to move.
6-8 LUBRICATION OF
POSITIVE TRACTION
DIFFERENTIAL
The lubricant level should be
checked every 6000 miles. Main-
tain level between the bottom of
the filler plug opening and 1/4
inch below the opening by adding
Special Positive Traction Lubri-
cant or equivalent a v a i l a b l e
through the Buick Parts Depart-
ment under part No. 531536.
Never use any lubricant other
than this special lubricant, even
for adding.
Positive Traction Differentials
can be easily identified either by
a stainless steel plate attached by
a rear cover bolt or by an X in a
circle stamped on the bottom edge
of the carrier housing flange. See
Figure 6-37. However, if the
wrong lubricant is accidentally
added, it will be necessary to
completely remove all lubricant,
flush with light engine oil, and
then fill with the special lubri-
cant. Capacity of the rear axle
housing is 2-1/2 pints.
6-9 POSITIVE TRACTION
DIFFERENTIAL
SERVICE
PROCEDURES
All rear axle service procedures
are the same in the Positive
Traction rear axle as in a con-
ventional rear axle, except for
servicing the internal parts of the
differential assembly. All rear
axle parts outside of the differ-
ential, such as the ring gear, dif-
ferential side bearings, and axle
shafts, are the same in either
rear axle assembly.
a. Disassembly of Differential
1. If ring gear or differential
case is to be replaced, remove
ring gear from case. Otherwise
ring gear need not be removed.
2. If a differential bearing is to
be replaced, pull bearing outer
race from case, using Remover
J-2241-A as described in para-
graph 6-5 (f).
3. Clamp case assembly in a
brass jawed vise by ring gear or
by case flange.
4. Mark flange half of case and
cover half with a center punch or
SAMPLE MARKING
LO ® 3.08 - 2 03
LOCATED BOTTOM
RIGHT AXLE TUBE.
Fig. 6-37—Identification of Positive
Traction Differential