User manual BENDIX AH-4 AIR HYD INTENSIFIER

[. . . ] With the ignition turned on, the warning light in the cab should light. NOTE: If the warning light comes on during a service application, the vehicle should be brought in for service immediately. Check tightness of mounting nuts, air and hydraulic fittings. Every 12 Months, 100, 000 Miles, or 3, 600 Operating Hours 1. [. . . ] Remove the Gap screws (2) which hold the rotochamber head in the shell and remove the head (6), return spring (7), and spring guide (8). Remove the nuts (3) from the body which secure the outer clamp (4) to the body. On some units, one of the mounting brackets is also retained by three of these nuts. Place body, open end down on bench and tap the ends of the studs (5) with a brass drift, lead or plastic hammer. The studs should be tapped on one side of the air inlet and then the other alternately, to free the outer clamp. Grasp the push rod and, by pulling and wiggling the entire assembly consisting of push rod and plate, diaphragm guide, diaphragm, inner and outer clamps should ease out of the body. Remove nuts from inside of diaphragm guide. Disassemble the inner diaphragm clamp, diaphragm, push plate rod assembly, and diaphragm guide. 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 clean the reservoir. This may be done with a simple tool as shown in Figs. Remove the four self-threading bolts (9) securing the adapter block or the reservoir to the master cylinder. Remove the adapter block or reservoir and the compensating valve (3) and spring (11). CAUTION The compensating valve must be removed before any attempt is made to remove the hydraulic piston assembly (see Fig. Remove retaining ring (8) and stop washer (7). Remove piston holding tool and remove piston (1) and spring (4). Remove o-ring (2) from cap nut and compensating valve seal (5) from adapter block or reservoir. 10 2 6 11 1 4 5 3. 19 MAX 3 8 7 . 74 3. 12 REF STROKE . 60 FIGURE 2 3 9 3/8 X 18 BOLT 3-1/8 4-5/8 C. R. S. 6 4-5/8 FIGURE 3 ASSEMBLY Rotochamber 1. Position the diaphragm on end in the inner diaphragm clamp (Fig. The smaller diameter end of the diaphragm should be against the diaphragm clamp. Place and install the diaphragm guide within the diaphragm and over the inner diaphragm clamp studs. Install the push plate push rod assembly within the diaphragm guide and over the inner diaphragm clamp studs. [. . . ] PLEASE READ AND FOLLOW THESE INSTRUCTIONS TO AVOID PERSONAL INJURY OR DEATH: When working on or around a vehicle, the following general precautions should be observed at all times. Park the vehicle on a level surface, apply the parking brakes, and always block the wheels. Stop the engine and remove ignition key when working under or around the vehicle. When working in the engine compartment, the engine should be shut off and the ignition key should be removed. [. . . ]