all reservoirs before beginning ANY work on the vehicle. If the vehicle is equipped with an
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 recommended pressures.
7.Never connect or disconnect a hose or line containing pressure; it may whip. Never remove a component or plug unless you are certain all system pressure has been depleted.
8.Use only genuine Bendix® replacement parts, components and kits. Replacement hardware, tubing, hose, fittings, etc. must be of equivalent size, type and strength as original equipment and be designed specifically for such applications and systems.
9.Components with stripped threads or damaged parts should be replaced rather than repaired. Do not attempt repairs requiring machining or welding unless specifically stated and approved by the vehicle and component manufacturer.
10.Prior to returning the vehicle to service, make certain all components and systems are restored to their proper operating condition.
11.For vehicles with Antilock Traction Control (ATC), the ATC function must be disabled (ATC indicator lamp should be ON) prior to performing any vehicle maintenance where one or more wheels on a drive axle are lifted off the ground and moving.
AD-IP™ AIR DRYER REMOVAL
This air dryer removal process is presented in the event it
becomes necessary to replace the entire air dryer. Normal service and parts replacement does not require removal of the air dryer from the vehicle.
1.Park the vehicle on a level surface and prevent movement by means other than the brakes.
2.Drain all reservoirs to 0 p.s.i. — Caution: Compressor discharge line may still contain residual pressure.
3.Identify and disconnect the three air lines from the end cover and note the position of end cover ports relative to the vehicle.
4.Unplug the vehicle wiring harness from the heater and thermostat assembly connector on the end cover assembly.
8
5.Remove the four bolts that secure both the upper and lower mounting brackets to the vehicle, and remove the air dryer from the vehicle.
6.Mark the relationship of the saddle bracket (5) to the end cover assembly (6). Remove the 5/16" cap screw
(1)and sleeve nut (3) securing the upper mounting strap
(4)to the saddle bracket (5). Earlier models used washer and nut in place of the sleeve nut (3). Remove the upper mounting strap (4) from the end cover assembly (6).
7.Mark the relationship of the lower bracket (9) to the end cover assembly (6). Remove the two 3/8" end cover cap screws (7) and two washers (8) that retain the lower mounting bracket (9) to the end cover (6).
DISASSEMBLY
The following disassembly and assembly procedure is presented for reference purposes and presupposes that a major rebuild of the
Caution: While performing service on the
1.Using an adjustable or socket wrench, loosen the desiccant cartridge bolt (10), then separate the desiccant cartridge (11) from the end cover (6). Pull the desiccant cartridge bolt out of the end cover (6).
Caution: Disassembly of the desiccant cartridge assembly should not be attempted! Detail parts for the cartridge are not available and the cartridge contains a 150# spring which can not be mechanically caged.
2.Remove both
3.Remove the retaining ring (14) that secures the purge valve assembly (15) in the end cover (6).
4.Remove the 1/4" shoulder bolt (16) from the bottom of the purge valve housing assembly (19) using a 3/8" socket wrench and a large blade screw driver, inserted in the slot on top of the purge piston (20). Remove the exhaust diaphragm (17), and the purge valve (18) from the purge valve housing (19).
5.Remove the
6.Remove the purge piston (20) and the return spring (22).
7.Remove the