Internal Expanding Brake Components; Combination Valve - Chevrolet 10 1971 Series Chassis Service Manual

BRAKES 5-24
A N C H O R
PIN
HOLD
D O W N
PIN
B A C K IN G
PLATE
6. Pull brake shoe and lining assemblies away from
anchor pin and remove the strut and spring.
7. Lift the brake shoes and linings with the adjusting
nut and bolt and connecting spring off the backing
plate.
8. Move the shoes toward each other until the adjusting
bolt and connecting spring drop off.
9. Remove the clip holding the brake lever to the
primary shoe (shoe with short lining).
10. Compress the spring on the brake cable and remove
the cable from the lever.
11. If necessary to remove the anchor pin, straighten the
washer from pin hex and reinforcement. Remove
reinforcement and washer with anchor pin.
12. If necessary to remove the cable, compress tongs on
cable and pull assembly out of the hole in the backing
plate.
13. If necessary to remove the backing plate, remove the
transmission flange nut and transmission output
flange. Remove bolts holding the backing plate to
bearing retainer and remove the backing plate.
Inspection
Replace any worn or broken parts.
Installation
1. Place the backing plate in position on the rear bear­
ing retainer and fasten with four bolts. Torque bolts
to 24 foot-pounds.
2. Install transmission output flange on spline of main-
shaft and fasten with flange nut. Torque nut to 100
foot pounds.
3. Install cable assembly from back of backing plate.
Push retainer through hole in backing plate until
W A V E
WASHER
LOCK
BRAKE
WASHER
LEVER
SHOE
WASHER
A D JUS TIN G SCREW
BRAKE
CABLE
Fig. 49— Internal Expanding Brake Components
RETURN
SPRINGS
FLANGE
GUIDE
STRUT PLATE
SPRING
HOLD D O W N
SPRING
WASHER. SPRING , CUP
tangs securely grip the inner side of the plate.
4. Place washer and reinforcement over the threaded
end of anchor pin. Hold anchor pin nut (flat side
against flange on backing plate) in position behind
backing plate and insert threaded end of anchor pin
from front side. Thread the anchor pin into nut and
tighten securely. (140 foot pounds torque). Bend tang
of washer over reinforcement and side of washer
over hex of anchor pin.
5. Install lever on cable by compressing the spring and
inserting cable in channel of lever. Release spring.
6. Install primary shoe (short lining) to lever as fol­
lows: place pin in lever, place washer on pin and
push pin through hole in primary shoe. Fasten
DRUM
10-30 CHEVROLET TRUCK SERVICE MANUAL