Plymouth Valiant V-100 1965 Service – Technical Manual page 122

5-24
BRAKES-POWER-MIDLAND ROSS
POWER BRAKE-MIDLAND ROSS
Description
The Midland Ross Power Brake (Fig. 36) is located
on the engine side of the dash panel. The forward
cover of the vacuum cylinder supports the master
cylinder.
The Midland Ross Power Brake unit can be identi-
fied by a clamp and screw method of attaching the
housing to the cover.
The power brake derives its power from the intake
manifold vacuum and atmospheric pressure. It does
not require
a
vacuum reservoir.
SERVICE PROCEDURES
Removal
(1) With the engine turned off, apply the brakes
several times to balance the internal pressure of the
brake.
(2)
Disconnect the hydraulic brake line from the
master cylinder.
(3) Disconnect the vacuum hose from the power
brake.
(4)
From under the instrument panel, remove the
nut
and attaching bolt from the power brake push
rod and brake pedal linkage.
(5) Remove the four power brake attaching nuts
and washers.
(6) Remove the power brake and master cylinder
from the vehicle and place on
a
service bench for
further disassembly.
CLAMP BAND CHECK VALVE AND VACUUM
HOSE CONNECTOR
DUST BOOT
\
MASTER CYLINDER
64x287 A
Pig.
36-Power Brake and Master Cylinder
Midland
Ross)
Disassembly (Figs. 36 and 37)
(1)
Remove the four master cylinder attaching nuts
and remove the master cylinder.
(2) Scribe an aligning mark across the joint of the
front and rear portions of the brake assembly. This
will insure alignment on reassembly.
(3) Remove the dust boot from the push rod.
(4)
Remove the filter, filter retainer and cover.
(5)
Working from the front of the unit, push the
RETAINING RING
Fig. 37-Power Brake fSectional View)
fMidland
Ross)
3NT
lVER
64x288
Fig.
38-Unseating the Bellows Seal
outer lip of the bellows assembly into the vacuum
chamber (Fig. 38).
(6)
Remove the clamp band securing the cover front