Pontiac FIREBIRD 1972 Service Manual page 382

SECTION 4 0
TYPE C SAFE-T-TRACK DIFFERENTIAL
The following caution applies to one or more steps in the assembly proce-
dure of components in this portion of the manual as indicated at appropri-
ate locations by the terminology "See Caution on page 1 of this Section".
CAUTION: THIS FASTENER IS AN IMPORTANT ATTACHING
PART IN THA T IT COULD AFFECT THE PERFORMANCE OF
VITAL COMPONENTS AND SYSTEMS, AND/OR COULD RE-
SUL T IN MAJOR REPAIR EXPENSE. IT MUST BE REPLACED
WITH ONE OF THE SAME PART NUMBER OR WITH AN
EQUIVALENT PAR T IF REPLACEMENT BECOMES NECES-
SAR Y. DO NOT USE A REPLACEMENTPAR T OFLESSER QUAL-
ITY OR SUBSTITUTE DESIGN TORQUE VALUES MUST BE
USED AS SPECIFIED DURING REASSEMBLY TO ASSURE
PROPER RETENTION OF THIS PART.
CONTENTS OF THIS SECTION
Trouble Diagnosis and Testing
............................
4D-1
Description
............................................................
4D-1
Operation
................................................................
4D-2
Specifications & Adjustments
..............................
4D-5
Lubrication
............................................................
4D-5
TROUBLE DIAGNOSIS AND TESTING
Trouble diagnosis for the "C" type Safe-T-Track differen-
tial is the same as outlined in Section 4-A and 4-B except
as listed below.
If there is a doubt that a car is equipped with a "C" type
Safe-T-Track differential, or to determine if this option is
performing satisfactorily, a simple test can be performed.
1. With the transmission in neutral, raise one wheel and
place a block of wood in front of the opposite wheel.
2. Remove opposite wheel and install special tool J
21579 with adaptor J 2619-4. As shown in Figure
4D- 1.
3. Install torque wrench and turn wheel. Disregard
breakaway torque and observe only torque required
to continuously turn wheel smoothly. If differential
................................................................
Overhaul 4D-5
......................................
Assembling Clutch Pack 4D-6
Checking Pinion to Side Gear Clearance
............
4D-7
Flushing
..................................................................
4D-9
assembly is equipped with Safe-T-Track, the rotating
torque will be at least 30 1b.ft.
Fig. 4D-1 Testing Safe-T-Track
DESCRIPTION
The C Type Safe-T-Track differential described in this
code should be compared with the axle code charts at the
section may be identified by the three letter code located
end of Section 4A to determine axle type and ratio.
on the front of the right hand axle tube. This three letter