B Series - Pontiac FIREBIRD 1972 Service Manual

BRAKES
-
GENERAL 5-3 1
CENTER CABLE
REMOVE AND INSTALL
2. Remove equalizer jam nut and remove equalizer
from cable.
3. Remove rear cable from connector
1. Place parking brake pedal in released position.
4. Remove retainer from rear cable at frame bracket.
Pull cable out of bracket.
2. Remove equalizer check nut and remove equalizer
from cable. 5. Remove rear brake drums.
3. Remove cable from cable guides.
6. Remove rear brake shoes.
4. Disconnect center cable from rear cables at con-
7. Remove cable end from parking brake actuating
nectors. lever.
5.
To install, reverse above procedures and adjust as
8. On models having conduit locking fingers, compress
outlined under Parking Brake Adjustment.
expanded conduit locking fingers at flange plate entry
hole and withdraw cable.
REAR CABLES
On other models, remove cable anchor screws at
REMOVE A N D INSTALL backing plate and withdraw cable.
9. To install, reverse above procedure and adjust as ou-
1. Place parking brake pedal in released position.
tlined under Parking Brake Adjustment.
SPECIFICATIONS
B SERIES
NEW DRUMS (REAR ONLY)
GEOMETRY:
Inside Diameter,
All Exc. Station Wagon
....................................
1 1 "
Station Wagon
....................................................
12"
Out-of-round
Maximum
......................................................
.002"
Eccentricity
Rear
................................................................
.006"
Rapid change of runout:
Indicator shall not change more than .0005" in any
inch of circumference.
REVERSALS:
Only one indicator reversal in excess of .0008".
................................................................
Width (Rear) 2"
Thickness (Rear)
..............................................................
Primary .220"
..........................................................
Secondary .26OV
........................
Effective braking surface area
187 sq.in.
MASTER CYLINDER BORE
Disc Brake system
..............................................
1.125"
PEDAL HEIGHT
(Underside of power brake pedal pad
..................................................
to floor pan) 3 7/8"
WHEEL CYLINDER BORE
SURFACE FINISH:
....................................................................
Rear 15/16"
60- 120 micro-inch with a non-directional lay.
A, F, X and G SERIES
FLU l D NEW DRUMS
Fluid which complies with heavy duty standards of
GEOMETRY:
SAE 70-R-3 specifications. Inside diameter
Front and Rear
............................................
9 1/2"