Hudson 1953 Super Jet, Mechanical Procedure Manual

Page: 144 / 156

139 BRAKES
6. Assemble the push rod (3) and the rubber boot
assembly on the master cylinder.
7. Refill the master cylinder to the required level
with Filler Bottle J-713 using "Hudson Hy-
draulic Brake Fluid". Replace the filler plug.
NOTE: After removing the master cylinder or
any hydraulic brake system parts, it is always
necessary to bleed the system to expel any air
that may have entered the system. Refer to
"Bleeding Brake System" Page 141.
WHEEL CYLINDERS FRONT
The wheel cylinders are of the straight bore
type. Each wheel cylinder has two opposed posi-
tioned pistons (4), Figure 3, fitted with rubber
cups (2). A spring (3) is assembled between the
rubber cups to hold them again s t the pistons.
Residual line pressure keeps the lips of the cup s
tight against the cylinder bores and pistons. The
outer ends of the pistons c o nt a c t the ends of the
brake shoes to transmit outward force to the brake
shoes.
FIGURE 3
REMOVAL
1. Remove wheel and hub and drum assembly.
2. Disconnect brake hose at frame bracket.
3. Disconnect the brake shoe retracting spring.
4. Remove the two wheel cylinder to backing
plate attaching screws.
5. Remove the wheel cylinder assembly with
the flexible brake hose attached.
DISASSEMBLY
1. Remove the wheel cylinder end guards (1),
Figure 3.
2. Remove brake cylinder pistons (4).
3. Remove the piston cups (2).
4. Remove the piston cup spring (3).
INSPECTION
Check the piston cups for frayed edges or
swollen and distorted condition and the pistons for
scores or scratches and pitting. Hone the cylinder
bore if necessary to provide a smooth finish or
replace as required.
ASSEMBLY
1. Wash the whee1 cylinder and all parts in clean
alcohol.
2. Dip the parts in "Hudson Hydraulic Brake Fluid" for
lubrication.
3. Assemble the spring (3), the piston cups
(2), pistons (4), and guards (1).
To install the wheel cylinder on the car, reverse
the steps of removal.
Tighten the screws attaching the wheel cylinder
to the brake backing plate to 12 foot pounds torque
using torque wrench J-1300.
WHEEL CYLINDER-REAR
REMOVAL
1. Remove the rear tire and wheel assembly.
2. Install Hub Puller J-736 and remove the hub and
drum assembly.
3. Disconnect the wheel cylinder tube to wheel
cylinder body.
4. Disconnect the brake shoe retracting spring
using tool J-142 Brake Spring Pliers and re-
move the cable lever link.
5. Remove the two wheel cylinder to backing plate
attaching screws.
6. Remove the wheel cylinder.