Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 434

3. Disconnect the power brake push rod from the brake
pedal.
4. Remove the four nuts from the mounting studs
which hold the power brake to the cowl.
5. Carry the power brake to a clean work area and clean
the exterior of the power brake prior to disassembly.
. Mount power brake assembly to cowl and torque
6
nuts to specified torque.
7. Connect power brake push rod to brake pedal.
. Connect vacuum hose to vacuum check valve.
8
9. Connect master cylinder to power cylinder and
torque nuts to specifications.
H YDR O- BOOS T BRAKE S Y S T E M
Power steering fluid and brake fluid cannot
NOTICE:
be mixed. If brake seals contact steering fluid or
steering seals contact brake fluid, seal damage will
result.
The following operations can be performed with the
booster installed in the vehicle; exceptions to this statement
may exist where Body Manufacturers sheet metal ("P"
Models) would require removal of the booster from the
vehicle.
Fig. 5 -4 9 -P o w e r Brake V acuum Hose Filter In s ta lla tio n -G M odels
P neum atic A ccu m u lato r
CAUTION: The accumulator
compressed gas. Always use proper tools
and follow recommended procedures or
personal injury may result. Do not apply
heat to accumulator. Do not attempt to
repair an inoperative
always replace with a new accumulator.
Dispose of an inoperative accumulator by
drilling a 1/16" diameter hole through the
end of the accumulator can opposite the
"0" ring.
Removal
1. Turn engine off and pump brake pedal 4 or 5 times
to deplete accumulator.
2. Disconnect the high pressure hose.
3. Remove two nuts from master cylinder, then move
master cylinder away from booster with brake lines
attached.
4. Place the accumulator retaining cap Tool J-26889
over the master cylinder stud and install the nut as shown
in Figure 5-51.
5. Using Tool J-22269-01 or a large "C" clamp (
minimum), depress the accumulator. Insert a punch into the
BRAKES 5-43
contains
accumulator,
6 "
LIGHT T R U CK SER V ICE MANUAL