BENDIX AH-1B Podręcznik - Strona 8

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2. Place the push rod and diaphragm assembly into the

pressure plate and place non-pressure plate onto the

push rod. Check to assure that the spring is in proper

position (each end contained and centered in the spring

guides).

3. Orient the pressure and non-pressure plates as marked

and compress the spring by pushing down on the

non-pressure plate. Retain with a clamp or light pressure

from a press. Be sure the ferrule on the pressure plate

is properly oriented and the edges of the non-pressure

plate, diaphragm, and pressure plate are equally

distributed around the entire circumference.

4. Install clamping ring and retain with the two bolts and

nuts. Torque to 130-150 inch pounds. IMPORTANT: Be

sure the beads of the pressure plate and the non-pressure

plate are contained by the clamping ring a full 360°. Tap

around the circumference of the clamp ring to assure it

is seated evenly all around.

5. Install a new gasket on the mounting studs of the

nonpressure plate of the assembled actuator and put

the assembly aside.

Master Cylinder Assembly

6. Install new o-rings on the master cylinder mounting flange

and the master cylinder piston.

7. Carefully insert the spring and piston into the master

cylinder body. Making certain not to damage the seal

and o-ring. The lip seal and o-ring must enter the body

last. Depress and hold the piston by inserting a dull

object into the recess in the end of the piston. Piston

actuator lip should be completely past the compensating

TRT valve assembly port to allow for proper installation

of the compensating valve assembly. Install the

compensating valve assembly into the threaded port of

the top of the master cylinder. Be sure compensating

valve is installed between the two larger diameters on

the piston. Torque to 30-40 foot pounds. NOTE: The

compensating valve assembly should retain the piston

assembly in the master cylinder if installed correctly.

(See Figure 10.)

8. Install a new seal on the bottom of the reservoir and

place both on the master cylinder. Be sure reservoir is

oriented so that holes for the Phillips screws line up

with the holes on the master cylinder. Install the two

Phillips screws and lockwashers and tighten snugly.

9. Install the reservoir retaining nut onto the compensating

valve through the reservoir cover opening. Use a 1-1/4"

socket and torque to 13-16 foot pounds.

10. Install the reservoir filler cap assembly on the reservoir.

11. Clamp the mounting bracket securely in a vise, making

sure it is oriented so that the unit may be assembled,

and lining up the marks made prior to disassembly.

FIGURE 11

12. Install the new gasket(6) over the mounting studs of the

brake chamber. Make sure the gasket is flat against the

top of the brake chamber.

13. Place the brake chamber onto the mounting bracket with

the push rod extending through the center hole and the

mounting bolts extending through the outer holes.

14. Install the master cylinder/reservoir assembly onto the

brake chamber mounting studs and retain with nuts(4)

and washers(5). Torque to 100-115 foot pounds. NOTE:

The end of the push rod must enter the recess of the

master cylinder piston.

Bench Bleeding

Before installing the AH-1B

vehicle the master cylinder should be bench bled. Follow

the vehicle manufacturer's recommendations in lieu of the

following.

1. Plug outlet port and secure cylinder in a vise with front

end tilted slightly downward. NOTE: Bleeder tubes or

Bendix bleeding kit #74013 may also be used following

the kit instructions enclosed. (Refer to Figure 11.)

2. Fill reservoir with brake fluid. Refer to vehicle

manufacturer's manual for fluid requirements.

3. Apply and release air pressure to the actuator several

times.

4. Re-position the master cylinder in the vise with the front

end tilted slightly up. Again, apply and release air

pressure several times. NOTE: When using this method

of bench bleeding, the master cylinder will not be capable

of being stroked once all the air is removed.

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5. Install the AH-1B

intensifier on the vehicle and perform

the "Operating and Leakage Tests" prior to placing the

vehicle in service.

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intensifier assembly on the