Pontiac FIREBIRD 1972 Service Manual page 424

BRAKES
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GENERAL 5-2 1
Fig. 5-19 X Series Parking Brake System
sion, and therefore drums should never be turned to the
"discard" dimension. After a drum is turned, be sure it is
free of all metal particles. Whenever a drum is turned, the
drum on the opposite side should also be turned. If the
drum diameter is less than 0.030" oversize after refinish-
ing, standard linings may be installed. If drum diameter
is 1 1.030- 1 1 .0601', (B Series except Station Wagon)
12.030- 12.060'' (B Series Station Wagon) or 9.530-9.560
(A, F, X and G Series), oversize linings must be installed.
NOTE: If new linings are installed on one
wheel, they must also be installed on the oppo-
site side of the car, except in cases where lining
wear on one side only is encountered at rela-
tively low mileage and is due to oil or grease on
linings, defective lining matenai etc. Linings
may be replaced on one side onl' provided the
lining on the opposite side is not less than 3/16"
thick (frnt) or l/8" thick (rear).
9. Check brake drum for build-up of rust and dirt at
outer circumference. Remove build-up so that drums
can be installed over pre-adjusted linings.
10. Inspect front wheel bearings and oil seals and replace
as necessary. When installing new seal, saturate with
S.A.E. 30 engine oil and wipe off excess. Saturating
seal with S.A.E. 30 oil prevents absorption and reten-
tion of moisture by the seal and improves resistance
to water entry into the front wheel inner bearing.
11. Inspect hoses and hydraulic lines for wear, kinks, or
damage and replace as necessary.
12. Clean exposed portions of parking brake cables and
examine for broken strands. Lubricate at points
where exposed cable comes into contact with body.
CAUTION: See
Caution on page I of this Sec-
tion regarding the fasteners referred to in step
I3 below.
13. Check to make sure all bolts and nuts securing back-
ing plate to suspension are tightened to 100 lb. ft.
torque at upper plate to knuckle bolt, 75 lb. ft. torque
at lower bolt, and 35 lb. ft. torque on all rear plate to
axle flange bolts.
ASSEMBLY
1. Lubricate the adjusting screw threads, shoe pads on
backing plate and all other contacting surfaces with
a small amount of brake lubricant or wheel bearing
lubricant. Do not lubricate teeth of star wheel.
2: Pull parking brake cable forward and rearward
through conduit and lubricate freely with light grease
or chassis lubricant. Remove any excess lubricant.
3. Assemble the adjusting screw.