Chevrolet Light Duty Truck 1973 Service Manual page 288

5 -2 2 BRAKES
removed, with the drun
with the locating hole i n
3. Make final adjustmei
forward and reverse stc
firm pedal effort until
height results.
CAUTION:
Frequent u
transmission forward
v ehicle motion may
adjusters from functior
low pedal h e i g h t s .
BRAKE PEDAL FREE 1
G-P Models
A definite pedal push rod
clearance must be maintaine
mounted master cylinder ui
clearance is adjusted as follov
1. After the brake pedal ai
assembled, install the
parts. Then to obtain th
the push rod and the
push rod so that the
the center of the pedal
42).
2. After tightening the loci
rod, recheck free travel.
CAUTION:
See "Cautio
s e c t i o n .
C-K Models
Manual brake vehicles do no
Fig. 42- Brake Pedal Adjustment-Typical
locating tang i n l i n e
he axle shaft flange.
by making numerous
S, applying brakes with a
3
a satisfactory brake pedal
age of an automatic
mge t o halt reverse
event the automatic
P
mg, thereby inducing
RAVEL ADJUSTMENT
to-master cylinder piston
1 on G and P model dash
its (manual brakes). This
s:
d pedal bumper have been
f ush rod and its attaching
correct clearance between
aster cylinder, adjust the
i
pedal travel measured at
pad is .06-.25 inches (fig.
nut on the adjustable push
i " on Page 1 of t h i s
incorporate an adjustable
push rod. Power brake units incorporate a two-piece
push rod. Ordinarily there would be no reason to change
the push rod dimension; however, if the rod were
inadvertently lengthened or shortened, the correct
dimension is given in Figure 42.
NOTE: To adjust, it would be necessary to
remove the unit from the vehicle, loosen the
locknut and adjust to the dimension shown,
retighten the locknut and reinstall the unit.
STOPLAMP SWITCH ADJUSTMENT (Fig. 43)
The stoplamp switch is mounted on a flange protruding
from the brake pedal support.
Adjustment
1. Release the brake pedal to its normal position.
Adjust the switch by rotating the switch in its
2
.
bracket. Electrical contact should be made when the
pedal travel (measured at the center of the pedal
pad) is 3/8-5/8" (C-K models), approximately 5/8"
(P-G models).
3. Tighten switch locknut, if so equipped, and connect
electrical harness.
BRAKE TRAVEL WARNING SWITCH
ADJUSTMENT
Refer to "Brake Travel Warning Switch" under
Component Replacement in this section.
PARKING BRAKE-REAR WHEEL
The rear brake assemblies (except RPO H22— where
LIGHT DUTY TRUCK SERVICE MANUAL