Master Cylinder - F-350 Truck With Dash-Mounted Booster Assembly; Vacuum Booster Frame Mounted - Piston Type Disassembly; F-350 Conventional Brake Master Cylinder - Typical Of P-Series; F-350 Dash-Mounted Master Cylinder Disassembled - Ford 1964 F-100 Shop Manual

2-26 G R O U P 2-BRAKES
BRAKE BOLT
FILLER CAP
STOPLIGHT
SWITCH
RETURN
SPRING
BRAKE PEDAL ASSEMBLY H1167-A
FIG. 17—F-350 Conventional Brake Master Cylinder—Typical of P-Series
from the rear end of the cylinder,
insert a drift through the front end
of the cylinder bore against the pis-
ton, and knock out the master cyl-
inder push rod, piston, and bushing
as an assembly (Fig. 19).
5. Slide the bushing assembly off
the push rod. R e m o v e the small snap
ring and separate the push rod from
the piston.
6. R e m o v e the "Block Vee" type
seal and bronze washer from the
piston (Fig. 18).
7. Disassemble the washer, retain-
er, "Block V e e " type seal, and the
O-ring from the bushing.
ASSEMBLY
1. Install the bronze washer and
the "Block V e e " type seal on the
piston assembly (Fig. 18).
2. Assemble the piston assembly
to the master cylinder push rod and
secure these parts together with the
snap ring.
3. Insert the push rod and piston
assembly through the front end of
the cylinder bore, and push in about
half the length of the bore.
4. Install the O-ring on the end
cap. Install the piston stop, spring,
check valve, and the end cap in the
front end of the cylinder (Fig. 18).
5. Install the O-ring on the bush-
ing. Slide the washer, the retainer,
the "Block V e e " type seal, and the
bushing onto the push rod (Fig. 20).
Take care to avoid damaging the
seal when sliding i t onto the push
rod. Assemble the seal to the re-
tainer flange as shown.
6. Being careful not to scratch
the surface of the push rod, slide all
the bushing and seal components
against the retaining flange at the
rear of the master cylinder bore.
Force the parts into place with the
tool shown in Fig. 21, and install
the bushing snap ring.
7. Slide the return spring onto the
master cylinder push rod, compress
the spring, and install the retaining
snap ring (Fig. 18).
VACUUM BOOSTER FRAME
M O U N T E D — P I S T O N TYPE
DISASSEMBLY
1. Loosen the control tube hose
clamps and slide the hose off the
end of the tube (Fig. 22).
2. Remove the air i n l e t tube snap
ring and remove the air inlet tube,
seal, and spring from the control
valve body.
3. R e m o v e the five control valve
body mounting screws and remove
the body, return spring, diaphragm,
and gasket from the end plate. T h e
poppet valve cannot be removed
from the valve body.
4. Mount the end cap in a vise,
loosen the hydraulic cylinder lock
nut, and unscrew the end plate and
booster body assembly from the hy-
draulic cylinder (Fig. 22).
5. Unscrew the hydraulic cylin-
der from the end cap, then remove
the lock nut and seal from the cyl-
inder. R e m o v e the bleeder screw and
RETAINING BOLT
:
ILLER CAP
FILTER
O-RING
1 CHECK VALVE
BLOCK VEE SEAL
BRONZE WASHER
SEAL RETAINER
O-RING
BUSHING
SNAP RING
PUSH R O D RETURN SPRING
SNAP RING
BLOCK VEE SEAL
SNAP RING
MASTER CYLINDER
PISTON ASSEMBLY
PISTON STOP
H 1 3 2 0 - A
FIG. 1 8—F-350 Dash-Mounted Master Cylinder Disassembled