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 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 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.
Note: The Trailer System-Guard™air dryer is intended to remove moisture and other contaminants normally found in the air brake system. Using alcohol, anti-freeze, oil or other de-icing substances in the brake system can damage the air dryer and will therefore void the Trailer System-Guard™air dryer warranty.
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 Trailer System-Guard™air dryer for leakage and integrity. Repair any excessive leaks - exceeding a 1" bubble in 5 seconds-before restoring vehicle to service.
OPERATION: GENERAL
The trailer dryer works as a buffer, removing moisture during exposure to wet air (trailer hooked to a tractor without an air dryer, or trailer is parked for extended periods with open glad hands) and giving up water vapor when reconnected to a tractor equipped with an air dryer. The Trailer System- Guard™ air dryer depends on dry tractor air to remove water vapor from the desiccant collected during wet times.
TRAILER SYSTEM-GUARD™AIR DRYER REMOVAL
This removal process is presented for the replacement of the Trailer System-Guard™air dryer.
1.Identify and disconnect the four air hoses from the Trailer System-Guard™air dryer.
2.Remove the locknuts, washers and grommets that secure the Trailer System-Guard™air dryer and remove it from the vehicle.
REPLACING OR RETROFITTING THE TRAILER SYSTEM-GUARD™AIR DRYER: GENERAL
The following instructions are presented for reference purposes only, since Bendix aftermarket replacement Trailer System-Guard™air dryers are packaged with the most up- to-date installation instructions. The instructions packaged with the Trailer System-Guard™air dryers should be followed in lieu of those presented here.
MOUNTING THE TRAILER
SYSTEM-GUARD™AIR DRYER
1.After positioning the Trailer System-Guard™air dryer according to the location requirements, mark the position of the predrilled mounting holes on the selected location. A template for the mounting pattern is included on page 4. Note: Only three of the four mounting holes must be used for securing the air dryer to the frame rail. Securing the air dryer at all four mounting holes can lead to damage and eventual failure of the air dryer. Any three of the four mounting holes can be used for installation. Selection is at the discretion of the installer.
If mounting the dryer on a trailer cross member center the template to maximize clearance and facilitate installation. Note: Check the vehicle manual before drilling the selected location.
