working in the engine compartment, the engine should be shut off and the ignition key should be removed. Where circumstances require that the engine be in operation, EXTREME CAUTION should be used to prevent personal injury resulting from contact with moving, rotating, leaking, heated or electrically charged components.
3.Do not attempt to install, remove, disassemble or assemble a component until you have read and thoroughly understand the recommended procedures. Use only the proper tools and observe all precautions pertaining to use of those tools.
4.If the work is being performed on the vehicle’s air brake system, or any auxiliary pressurized air systems, make certain to drain the air pressure from 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.
WARNING: DO NOT ATTEMPT TO ADJUST OR SERVICE THE PRESSURE PROTECTION VALVES. INCORRECT PRESSURE PROTECTION VALVE SETTINGS CAN
RESULT IN THE AUTOMATIC APPLICATION OF THE VEHICLE SPRING BRAKES WITHOUT PRIOR WARNING.
MAINTENANCE KITS
See the proper service data sheet or catalog page for a full list of maintenance kits available.
NOTE: Kits are not available for the servicing of the pressure protection valves (See Figure 4). Do not attempt to adjust or service the pressure protection valves - these are not service items.
•Governor/Delivery Check Valve Kit: This kit contains the parts necessary to replace both the governor and delivery check valve.
•12 volt or 24 volt Heater and Thermostat Kits: Contains a replacement heater and thermostat assembly and related components required for replacement.
•Purge Valve Housing Maintenance Kit: This kit contains the parts necessary to rebuild the purge valve subassembly.
•Service New Purge Valve Housing Assembly: Contains a service new assembly and related components to change the purge valve sub- assembly.
•Service New Desiccant Cartridge Kit: This kit contains the parts necessary to change the desiccant cartridge only.
•Delivery Check Valve Maintenance Kit: This kit contains the parts necessary to replace the delivery check valve.
•Pressure Protection Valve Boot Replacement.
•
•
•Purge Reservoir Drain Valve: Replaces the drain valve on the purge reservoir.
GENERAL
When rebuilding or replacing components of the air dryer use only genuine Bendix® parts. For ease in servicing, the
If, after completing the routine operation and leakage tests, it has been determined that one or more components of the air dryer requires replacement or maintenance, refer to the previous list to find the appropriate kit(s).
6
