Chevrolet CHEVY VAN G10 SERIES Service Manual page 112

Fig. 2 1 —B acking Plate Access H ole
Removal
1. Raise the vehicle on a hoist.
2. Loosen check nuts at forw ard end o f parking brake
equalizer sufficiently to remove all tension from brake
cable.
3. Remove brake drum s.
C A U T IO N : The brake pedal must not be depressed
while drums are removed.
4. U nhook brake shoe pull back springs from anchor pin
and link end, using Tool J-8049 (Fig. 23).
5. Remove the ac tu a to r retu rn spring.
6
. Disengage the link end from th e anchor pin and then
from the secondary shoe.
7. Remove hold-dow n pins and springs using any suitable
tool (Fig. 24).
8
. Remove the actu ato r assembly.
N O T E : The actuator, pivot and override spring are
an assembly. I t is not recommended th at they be
Fig. 2 2 —Brake D rum Access Hole
Fig. 2 3 —U n h o o k in g Pull Back S pring
disassembled fo r service purposes, unless they are
broken. It is much easier to assemble and disas­
semble the brakes by leaving them intact.
9. Separate the brake shoes by removing adjusting screw
and spring.
C A U T IO N : M ark shoe and lining positions if they
are to be reinstalled.
10. Remove parking brake lever from secondary brake shoe.
Inspection
1. Clean dirt o ut o f brake drum . Inspect drum s for rough­
ness, scoring or o ut o f round. Replace or recondition
drum s as necessary.
2. Carefully pull low er edges o f wheel cylinder b o o ts away
from cylinders an d n o te w hether interior is w et w ith
brake fluid. Excessive fluid at this point indicates leakage
past piston cups requiring overhaul o f wheel cylinder.
Fig. 2 4 —Rem oving H old Down Spring and Pins
BRAKES 5-11
C H E V Y V A N SHOP M A N U A L