4B-1
SAFE-T-TRACK
DIFFERENTIAL
CONTENTS
OF
THIS
SECTION
SUBJECT
PAGE
General
Description 4B-1
Pontiac 4B-1
Tempest and
Firebird
4B-1
Lubrication
4B-1
Service Procedures 4B-1
Testing for Correct Operation 4B-1
Major
Repairs
Differential Case - Disassemble 4B-3
Cleaning
and Inspection of Case 4B-5
SUBJECT
PAGE
Differential Case - Assemble 4B-6
Trouble
Diagnosis
Oil
Leaks 4B-9
Specifications
Rear
Axle 4B-9
Ring
and Pinion
Gear
4B-9
Torque
4B-9
Special
Tools 4B-10
GENERAL
DESCRIPTION
The
Safe-T-Track
differential can be identified by
a
tag attached to the lower right
section
of axle
cover. It is
designed
to direct the major driving
force to the wheel with greater traction, thereby
reducing the possibility of the car becoming stuck
while driving under adverse conditions.
PONTIAC-
The
Safe-T-Track
differential (Fig. 4B-1) is sim-
ilar
to, and interchangeable with, the standard dif-
ferential case assembly (the ring gear and side
bearings are identical).
TEMPEST
AND
FIREBIRD—
All
rear axle parts of cars equipped with the
Safe-T-Track
two pinion differential (Fig. 4B-2) or
the
Safe-T-Track
four pinion differential (Fig. 4B-3)
are
interchangeable with
those
equipped with the
conventional differential,
except
for the case assem-
bly. It is similar in all respects to the conventional
case assembly, with the addition of
cone
clutches
behind each side gear.
wrong
lubricant is added, remove it from housing
and
flush with special lubricant. Then add the
proper
amount of lubricant. It may be necessary
to drive the car several miles to allow the
lubri-
cant to work through the clutches and eliminate the
chatter. If chatter persists, drain and
refill
again
to eliminate contamination. It may require 2 or 3
flushings
to correct. An alternate procedure is
disassembly and cleaning with solvent. Capacity
is
4 1/2 pints of lubricant for Pontiac; capacity
for
Tempest and
Firebird
is 3 pints of lubricant.
SERVICE
PROCEDURES
All
rear axles service procedures are the same
for the
Safe-T-Track
as for the conventional dif-
ferential,
except
for servicing the case assembly.
NOTE:
Two precautions
must
be observed when
working
on
cars
with
Safe-T-Track
differentials:
1.
NEVER
raise one wheel and run the
engine
with
the transmission in gear. The driving force to the
wheel on the floor will cause the car to
move.
2. Do not use "on the car"
type
wheel balancers
on the rear wheels, unless
BOTH
wheels
are off the
floor.
LUBRICATION
The
differential should be checked for leaks and
level every
6000
miles. Maintain level to
bottom
of
the filler plug opening. No periodic lubricant change
is recommended. However, if necessary to add
lubricant,
use only specially formulated lubricant
for
Safe-T-Track
differentials.
IMPORTANT:
Never use any other lubricant in a
Safe-T-Track
differential or a severe chatter may
result,
especially when turning
corners.
If the
TESTING
FOR
CORRECT OPERATION
If
there is any
doubt
as to the proper functioning
of the
Safe-T-Track
differential, the following simple
test
should be performed:
1. Place the car on a hoist with
engine
off and
the transmission selector lever in park if automatic,
or in low gear if manual.
2. Attempt to turn either wheel.
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