OPERATION & LEAKAGE TESTS
Build the air system to governor cutout. Shut off the engine. Using a soap solution, check all lines and fittings leading to and from the PuraGuard QC™ filter for leakage and integrity. Repair any excessive leaks — exceeding a 1 inch bubble in 5 seconds — before restoring vehicle to service.
WARNING! 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.
1.Park the vehicle on a level surface, apply the parking brakes, and always block the wheels. Always wear safety glasses.
2.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. 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.
PURAGUARD QC™ OIL COALESCING FILTER REMOVAL
This PuraGuard QC™ filter removal process is presented in the event it becomes necessary to replace the entire coalescing filter.
Normal service and parts replacement does not require removal of the PuraGuard QC™ filter 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.
3.Identify and disconnect the two air hoses from the PuraGuard QC™ filter.
4.Remove the two bolts that secure the bracket to the vehicle, and remove the PuraGuard QC™ filter from the vehicle.
REPLACING OR RETROFITTING THE PURAGUARD QC™ OIL COALESCING FILTER
General
The following retrofit instructions are presented for reference purposes only since Bendix aftermarket retrofit and replacement PuraGuard QC™ filter systems are packaged with the most
ASSEMBLY
1.The top of the system filter has an arrow symbol showing the air flow direction (see figure 1). Secure the mounting bracket to the body and
RETROFIT: LOCATING THE PURAGUARD QC™ FILTER ON THE VEHICLE
1.The PuraGuard QC™ filter must be mounted vertically (±5°) and must not be exposed to direct wheel splash (located behind axle mud flap is acceptable).
2.Locate it as close to the first (supply) reservoir as possible and upstream of the supply reservoir (see figure 3).
3.To minimize vibration, mount the PuraGuard QC™ filter on a frame rail. If the vehicle requires the filter to be directly mounted to the reservoir, be sure to only use a high strength nipple fitting. (See further notes under Connecting the Air Hoses.)
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