Brakes - Hudson 1953 Jet Mechanical Procedure Manual

SPECIFICATIONS
Type
Drum Diameter
Material
Lining Type
Width - Front Shoes
Width - Rear Shoes
Thickness
Length Per Wheel
Front
Rear
Total Lining Area
Wheel Cylinder Size
Front
Rear
Adjustment
Pedal Free Play
Fluid Capacity
CONSTRUCTION
The brake equipment is of the Bendix self-
centering floating shoe type. Only minor adjustment
is re quire d as the shoes center themselves when the
brakes are applied assuring uniform brake lining
wear. Eccentrics contact the brake shoe ribs to pro-
vide adjustment to compensate for lining wear.
The master cylinder is a combined reservoir and
master cylinder with hydraulic pressure provided by
foot pedal and push rod operation. Displacement of
fluid in the master cylinder conveys pressure
through tubes and flexible hoses to the wheel cylin-
ders.
Opposed w hee1 cylinder pistons contact the
upper ends of the brake shoes. Pressure between the
wheel cylinder pistons forces the brake shoes out-
ward into contact with the brake drums.
Brake shoe retracting springs move the shoes
inward when the hydraulic pressure has been re-
lieved. As the shoes are retracted, the wheel cylinder
pistons are moved toward the center of the cylinder
SECTION 15

BRAKES

Bendix Fixed Anchor
9"
Centrifuse Iron
Moulded
2"
1-3/4"
.175"
17.475"
17.475"
132.14"
1-1/8"
15/16"
Eccentric Cam
1/4"
1-1/2 U.S. Pints
Hydraulic fluid displaced by the wheel cylinder
piston retracting m o v e me n t forces the fluid
back through the tubes into the master cylinder
reservoir.
PARKING BRAKE
Hand braking is provided through a pull type
handle, operating a self locking hand control
mechanism mounted below the instrument panel.
Application is made easier by depressing the
brake pedal in the usual manner, at the same time
pulling upward on the brake handle. This relieves
the load on the hand brake cables by hydraulically
forcing the shoes against the brake drums. This
prevents creation of a vacuum which might draw
air into the cylinder piston cups when the shoes are
expanded manually.
MASTER CYLINDER
The brake master cylinder is a combined
reservoir and master cylinder cast integrally. It
maintains a constant volume of fluid in the
hydraulic system at all times regardless of heat
or cold expansion or contraction. It acts as a
pump during bleeding operations.
It contains the fluid actuating piston, return
spring, check valve and piston push rod that
makes contact between the actuating piston and
the brake pedal operating lever. Synthetic rubber
primary and secondary cups are provided at each
end of the piston. When extended, the push rod
is enclosed in a synthetic rubber boot which
serves to keep grit and dirt out of the hydraulic
system. Intake and relief ports open into the
reservoir.
The piston (9), Figure 2, is returned to a released
position much faster than the fluid returns to the
master cylinder from the tube.
BRAKES 136