Chevrolet 10 1971 Series Chassis Service Manual page 176

BRAKES 5-28
TOP VIEW
Fig. 57— Plug G a ge Positioning for Correct
Actuator Lever Adjustment
To determine .020" to .039" , turn the
NOTE:
adjusting screw 2 full turns out from the fully
retracted position. Hold a .060" plug gauge
(from J-9789-01 Universal Carburetor Gauge
Set) at a 90° angle with the star wheel edge of
the actuating lever. Turn the adjusting cam until
the actuating lever and threaded area on the ad­
justing screw just touch the gauge (figs. 56 and 57).
11. Secure the adjusting cam cap screw and retract the
adjusting screw.
12. Install brake drums and wheels and remove vehicle
from jack stands.
13. Adjust the brakes by making several forward and
reverse stops until a satisfactory brake pedal height
results.
10-30 CHEVROLET TRUCK SERVICE MANUAL