Hudson 1955 Rambler, Техническое и сервисное руководство

Страница: 191 / 292

1. Retainer Plate
2. Expanding Ring
3. Wick
4. Packing Plate
5. Leather Packing
6. Piston and Valve Assembly Plate
7. Piston Assembly Ring J-5406
FIGURE 22—Vacuum Piston Assembly
Inspect finished surface of push rod and
plunger assembly for any scoring or pitting.
Rod must pivot freely in the plunger without any
noticeable end play. Do not attempt to refinish
plunger surface; replace assembly if necessary.
Inspect vacuum cylinder end plate for possible
distortion.
POWER BRAKE UNIT ASSEMBLE
Master Cylinder
Place a new gasket over threads of residual check
valve fitting. Hold fitting in a vertical
position and install the cone end of valve into
fitting. Place the spring in the recess of the
valve. With the master cylinder upside down,
thread the residual check valve assembly into the
master cylinder (Fig. 18).
Dip a new master cylinder cup in brake fluid
and place the large side of the cup retainer to
the lip side of the cup. Apply a film of brake
fluid
fluid on the master cylinder piston rod and
place retainer and cup onto the rod. Install
the piston rod washer and piston rod stop washer
against the cup (Fig. 17).
Clamp the master cylinder body in a vise and
insert the piston rod assembly into the bore
exercising care to prevent cutting the cup.
Install new retaining ring in recess of
cylinder bore; use Tool J-4245 "Truarc" Pliers.
Place a new rubber seal on the compensating
valve fitting. Insert stem of new compensating
valve into the threaded end of fitting. Place
a new spring over valve stem with the large coil
into the fitting. Compress the spring and
install a new spring retainer onto the valve
stem (Fig. 19).
Before installing the compensating valve
into the master cylinder, push the master
cylinder piston rod into the master cylinder;
hold in this position while threading the valve
fitting in place. This will insure that the
operating stem of the valve is on the correct
side of the master cylinder washer riveted in
the end of master cylinder piston rod. Tighten
valve fitting to a torque of 125 to 250 inch
pounds.
Operate the piston rod manually and observe
compensating valve action. Initial movement of
piston rod should immediately allow the valve
to straighten and seal.
Torque down the residual check valve fitting
to 500700 inch pounds of torque. Reinstall
master cylinder outlet fitting, cover, and new
gaskets.
Pull out the master cylinder piston rod;
install Tool J-5405 Seal Installer over the end
of the piston rod. Install a new seal over the
end of the tool with the lip of the leather
toward the master cylinder. Press in place and
remove tool (Fig. 231.
1. Seal
2. Seal Installing Tool
3. Master Cylinder Piston Rod
FIGURE 23—Installing Master Cylinder
Leather Seal
BRAKES, AND WHEELS-HUBS AND DRUMS 13