Chevrolet 1980 Light Duty Truck Service Manual page 391

ANCHOR
PIN
HOLD
D O W N
PIN
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 and washer with anchor pin.
12. If necessary to remove the cable, compress tangs on
cable and pull assembly out of the hole in the flange plate.
13. If necessary to remove the flange plate, remove the
transmission flange nut and transmission output flange.
Remove bolts holding the flange plate to bearing retainer
and remove the flange plate.
Inspection
Replace any worn or broken parts.
In s ta llatio n
Refer to "Notice" on Page 1 of this section
NO TICE:
when installing fasteners in steps 1, 2 and 4 below.
1. Place the flange plate in position on the rear bearing
retainer and fasten with four bolts. Torque bolts to 24 lb.
ft. (33 N-m).
2. Install transmission output flange on spline of
mainshaft and fasten with flange nut. Torque nut to 100 lb.
ft. (136 N-m).
3. Install cable assembly from back of flange plate.
Push retainer through hole in flange plate until tangs
securely grip the inner side of the plate.
W AVE
WASHER
LOCK
BRAKE
LEVER WASHER
SHOE
WASHER
SOCKET
ADJUSTING SCREW
BRAKE
CABLE
Fig. 5 -4 7 -P ro p s h a ft Parking Brake Com ponents
reinforcement. Remove
RETURN
SPRINGS
FLANGE
STRUT
GUIDE
STRUT PLATE
SPRING
HOLD D O W N
SPRING
WASHER, SPRING , CUP
4. Place washer and reinforcement over the threaded
end of anchor pin. Hold anchor pin nut (flat side against
flange on flange plate) in position behind flange plate and
insert threaded end of anchor pin from front side. Thread
the anchor pin into nut and tighten securely (140 lb. f t .- 190
N*m). Bend tang of washer over reinforcement and side of
washer over hex of anchor pin.
5. Install lever on cable by compressing spring and
inserting cable in channel of lever. Release spring.
6. Install primary shoe (short lining) to lever as
follows: Place pin in lever, place washer on pin and push
pin through hole in primary shoe. Fasten parts together by
installing the clip in groove of pin.
7. Fasten two brake shoes and linings together by
installing connecting spring. Move the shoes toward each
other and install adjusting screw.
8. Lubricate the flange plate contact surfaces with a
very light coat of Delco Brake Lube (or equivalent).
9. Place shoe and linings in position on flange plate.
When facing the brake assembly, the shoe with the
short lining should be to the left with the lever assembled
to it (automatic transmission), to the right (manual
transmission).
10. Pull brake shoes apart and install strut lever and
spring between them. The loop on the strut spring should
be in the "up" position.
11. Install hold down pins, washers, springs and cups
from flange plate to shoes.
12. Place guide plate on anchor pin.
BRAKES 5-37
DRUM
LIG H T T R U C K S ER V ICE M ANUAL