Vacuum Booster Frame Mounted - Piston Type Assembly; Master Cylinder Push Rod, Piston And Bushing Removal; Assembly Of Seal And Bushing Components To Master Cylinder Push Rod; Master Cylinder Bushing Installation - Ford 1964 F-100 Shop Manual

PART 2-3
• F-250 AND F-350, AND P-SERIES BRAKE SYSTEMS
2-27
FIG. 1 9-Master Cylinder Push Rod, Piston, and Bushing Removal
copper gasket from the end cap then
remove the end cap from the vise.
6. Scribe a line across the booster
body and end plate so that these
parts can be reassembled in their
original position. R e m o v e the four
hook bolts, and slide the booster body
from the vacuum piston assembly.
7. Compress the vacuum piston
return spring by pressing d o w n on
the end plate and using hook-type
clamps similar to those in Fig. 23.
Hold the spring compressed.
8. R e m o v e the hydraulic piston
from the push rod by sliding the re-
tainer spring (on the hydraulic pis-
ton) back, and removing the retainer
pin.
9. R e m o v e the hook clamps and
separate the vacuum piston and push
rod assembly, and the return spring
from the end plate.
10. Clamp one of the bolt flanges
of the end plate in a vise. Unscrew
the control valve cylinder from the
end plate, then remove the rubber
gasket from the cylinder. R e m o v e
WASHER
BUSHING
BLOCK VEE SEAL
H1270-A
FIG. 20—Assembly of Seal and Bushing Components to Master Cylinder
Push Rod
Tool-T61B-3576-A-
H 1 2 7 1 - A
FIG. 21-Master Cylinder Bushing
Installation
the snap ring and stop washer, then
press the control valve piston assem-
bly from the cylinder (Fig. 22). T h e
piston should come out of the front
end of the cylinder to avoid damage
to the cups.
11. R e m o v e the small retainer,
then remove the piston cups and
spacer from the control valve piston.
12. R e m o v e the hydraulic cylin-
der end seal from the end plate (Fig.
22). R e m o v e the snap ring, then re-
move the push rod seal cup parts
(retainer washer, spring spacer, seal
retainer, seal cup and stop washer)
from the end plate.
13. R e m o v e the end plate from
the vise and place i t on two wooden
blocks with the hydraulic cylinder
side up. Drive the push rod leather
seal assembly out of the end plate,
using a flat end rod or drift.
14. Clamp the vacuum piston and
push rod assembly in a vise at the
hexagonal nut. R e m o v e the vacuum
piston retaining nut and disassemble
the vacuum piston from the push
rod (Fig. 22). R e m o v e the flat
washer.
ASSEMBLY
1. Install the bleeder screw and a
new copper gasket in the end cap,
and place the end cap in a vise.
Thread the hydraulic cylinder into
the end cap with the milled flats on
the cylinder next to the end cap