User manual BENDIX AD-4 AIR DRYER

[. . . ] ® Bendix® AD-4TM Air Dryer UPPER BRACKET UPPER BRACKET SUPPLY PORT LOWER BRACKET CONTROL PORT LOWER BRACKET SUPPLY PORT THERMOSTAT TERMINAL PURGE EXHAUST DELIVERY PORT PURGE EXHAUST EXTENDED PURGE AD-4TM AIR DRYER FIGURE 1 - AD-4TM AIR DRYER MODELS STANDARD AD-4TM AIR DRYER DESCRIPTION The function of the AD-4TM air dryer is to collect and remove air system contaminants in solid, liquid and vapor form before they enter the brake system. It provides clean, dry air to the components of the brake system which increases the life of the system and reduces maintenance costs. Daily manual draining of the reservoirs is eliminated. The AD-4TM air dryer consists of a desiccant cartridge and a die cast aluminum end cover secured to a cylindrical steel outer shell with eight cap screws and nuts. [. . . ] The majority of highway vehicles in use today will meet these basic requirements however, some may not. Examples of vehicles that may not meet the requirements include bulk trailer unloading operations and other high air consumption/continuous flow systems. While the AD-4TM air dryer can be used on these vehicles the standard installation procedure presented in this manual may require modification to assure proper operation and service life. Consult your local authorized Less than 9, 000 cu. Standard AD-4TM Air Dryer 9, 000 - 12, 500 cu. Extended Purge AD-4TM Air Dryer Greater than 12, 500 cu. or Bendix Engineering 11 VEHICLE PREPARATION 1. Park the vehicle on a level surface and prevent movement by means other than the brakes. (0 kPa). LOCATING AD-4TM AIR DRYER ON VEHICLE 1. The AD-4TM air dryer must be mounted vertically (purge exhaust toward road surface) outside the engine compartment in an area of air flow while the vehicle is in motion. The AD-4TM air dryer must not be exposed to direct wheel splash (located behind axle mud flap is acceptable). Locate the AD-4TM air dryer as close to the first (supply) reservoir as possible. Do not locate the AD-4TM air dryer near heat producing components such as the vehicle exhaust and make certain adequate clearance from moving components (e. g. drive shaft, suspension, pitman arm, etc. ) is provided. Locate the AD-4TM air dryer on vehicle so that a minimum of 11 inches (28 cm) clearance below the end cover is available to allow servicing. Alternatively, provide access to the bracket bolts so the unit may be removed for servicing. When choosing the mounting location for the AD-4TM air dryer, note the discharge line length requirements stated under the heading Connecting the Air Lines, elsewhere in this instruction sheet. Important Note: Under normal operating conditions, the maximum inlet air temperature for the AD-4TM air dryer is 160 degrees Fahrenheit. the bracket and placing the washers removed in proper sequence, torque to 270-330 inch pounds. To determine which end cover bolts to utilize to attach the bracket, take into consideration the piping connections required to install the AD-4TM air dryer and use those that will best position the unit for ease of installation. 248478) is available to facilitate the mounting of the AD-4TM air dryer. It is not included in kits but can be obtained through an authorized Bendix parts outlet. Use 3/8" bolts (grade 5 min. ) and washers (not furnished) to mount the AD-4TM air dryer to the vehicle. [. . . ] Compressor fails to "unload". 21 Appendix A Table A: Maintenance Schedule and Usage Guidelines Regularly scheduled maintenance is the single most important factor in maintaining the air brake charging system. Column 1 Typical Compressors No. of Spec'd Axles Column 2 Discharge Line I. D. Length Column 3 Recommended Air Dryer Cartridge Replacement 1 Column 4 Recommended Reservoir Drain Schedule2 Column 5 Acceptable Reservoir Oil Contents3 at Regular Drain Interval Vehicle Used for: Low Air Use Compressor with less than 15% duty cycle 1/2 in. Bendix® Tu-Flo® 550 air compressor 6 ft. Recommended Every Month Max of every 90 days e. g. [. . . ]