Stop Lamp Switch; Front Housing; Power Piston - Pontiac Grand Prix Service Manual

5A-2
1969
PONTIAC SERVICE MANUAL
FLOOR P A N
PEDAL IS N O T TO
CARPET & JUTE
UNTIL
n
STOPS AGAINST BRACKET OR ARM. PULL PEDAL
VALVE ASM.
REARWARD WITH 15 TO 20 LBS. FORCE TO PROPERLY
ADJUST SWITCH.
4
Fig. 5A-2 Tempest and Grand Prix Power Brake
System
MINOR REPAIRS
FRONT HOUSING
BLEEDING BRAKES
REMOVE
Brakes should be bled in the same manner as standard
1.
R~~~~~ vacuum check valve from front housing
brakes, unless a disc brake balance valve is incorpo-
and h d grommet.
rated in the system.
STOP LAMP SWITCH
2.
Remove master cylinder and position it away from
the vacuum cylinder.
(See Section 5 for service.) All models use the same
switch for both standard and power brakes.
3. Scribe a line across front and rear housings to
facilitate reassembly.
OVERHAUL DELCO-MORAINE POWER
4. Install tool J 22805-01 at front housing. Insert a 22"
BRAKE
long x
1 1/4"
square channel tube in end of tool.
MASTER CYLINDER ONLY
-
REMOVE
5. Using a 14" cremnt wrench or equivalent, twist the
square channel tube counterclockwise enough to
Certain revair overations. such as redacement of
&parate front housing from rear housing (Fig.
5 ~ 2 ) .
master
dnder
hema'
pam, pennit'
the master
6. Remove front housing and pomr piston
m-
cylinder to be removed by itself, leaving the power
spring.
cylinder, pedal and brackets in the car.
1.
Disco~ect hydraulic lines at master cylinder, pump
POWER PISTON
.
REMOVE (Fig 5 ~ . 7 )
fluid from cylinder into a container and dispose of
fluid. Cover cylinder openings and ends of both pipes
to exclude dust, dirt, etc.
1.
Tempest, Grand
Prix
and Firebird
-
remove clevis
pin retainer and pin at brake pedal.
2. Remove master cylinder attaching nuts and remove
master cylinder from vacuum power section.
Pontiac
-
remove clevis pin retainer.