BENDIX AH-4 AIR HYD INTENSIFIER Manual Download Page 4

4

FIGURE 3

FIGURE 4

FIGURE 5

ASSEMBLY

Rotochamber

1. Position the diaphragm on end in the inner diaphragm

clamp (Fig. 1). The smaller diameter end of the
diaphragm should be against the diaphragm clamp.

2. Place and install the diaphragm guide within the

diaphragm and over the inner diaphragm clamp studs.

3. Install the push plate push rod assembly within the

diaphragm guide and over the inner diaphragm clamp
studs.

4. Install nuts on the inner diaphragm clamp studs and

tighten securely (55-70 inch pounds)

5. Place the assembly consisting of the push rod, push

plate, diaphragm guide, diaphragm, and inner clamp
inside of the outer clamp.

6. Roll the free end of the diaphragm back and over the

end of the outer diaphragm clamp.

7. Lubricate the inside wall of the body and the rolled

surface of the diaphragm with BW652M Type 2.

8. Slide the above assembly into the body. The end of the

diaphragm should fit snugly against the shoulder in the
body. Position the outer diaphragm clamp studs through
the holes at the end of the body, install nuts and tighten
securely. Torque to 100-125 inch pounds.

9. Install spring guide, and install spring over push rod.

10. Install cover over push rod and into body. Attach cover

to body with cap screws, tightening securely. Torque to
110-150 inch pounds.

ASSEMBLY

Master Cylinder

1. Wash the cap nut, adapter block, and cylinder castings

with alcohol or mineral spirits and dry thoroughly.

2. Carefully clean the filter screen. (6)

Continued on Page 5.

3/8 X 18 BOLT

3-1/8

4-5/8

6

4-5/8

C.R.S.

Summary of Contents for AH-4 AIR HYD INTENSIFIER

Page 1: ...ded if intrusive maintenance is performed during this period Because no two vehicles operate under identical conditions maintenanceintervalswillvary Experienceisavaluableguide in determining the best maintenance interval for a vehicle Every Month After 8 000 Miles or 300 Operating Hours 1 Remove the cover and gasket from the brake fluid reservoir taking extreme care to first remove all dirt and fo...

Page 2: ...f remote mounted reservoir reconnect the reservoir to the master cylinder 3 Before adding hydraulic fluid cycle theAH 4 intensifier very carefully by making a very light brake application The rotochamber should extend to full stroke and operate the stroke warning switch causing the warning light to come on in the cab This will test the stroke warning system Release the application and reset the st...

Page 3: ...from inside of diaphragm guide 7 Disassemble the inner diaphragm clamp diaphragm push plate rod assembly and diaphragm guide 8 Remove the stroke warning switch from the rotochamber head and bench test for electrical integrity If OK replace in head DISASSEMBLY Master Cylinder FIGURE 2 1 Clean exterior of master cylinder and drain any remaining fluid In the case of remote mounted reservoir drain and...

Page 4: ... of the diaphragm back and over the end of the outer diaphragm clamp 7 Lubricate the inside wall of the body and the rolled surface of the diaphragm with BW652M Type 2 8 Slide the above assembly into the body The end of the diaphragm should fit snugly against the shoulder in the body Position the outer diaphragm clamp studs through the holes at the end of the body install nuts and tighten securely...

Page 5: ... or reservoir in place The master cylinder casting should preferably be held in a horizontal position for this operation Start the four self threading bolts 9 by hand to prevent cross threading and torque to 150 200 inch pounds Care should be taken that the compensating valve is properly located before the adapter block or reservoir is located and snugged down Fig 9 The piston may now be released ...

Page 6: ... air pressure from all reservoirs before beginning ANY work on the vehicle If the vehicle is equipped with an AD IS air dryer system or a dryer reservoir module be sure to drain the purge reservoir 5 Following the vehicle manufacturer s recommended procedures deactivate the electrical system in a manner that safely removes all electrical power from the vehicle 6 Never exceed manufacturer s recomme...

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