BENDIX AD-IP INTEGRAL PURGE AIR DRYER Vehicle Preparation, Locating AD-IPAIR Dryer on Vehicle

CFM that an authorized Bendix parts outlet or Bendix marketing representative be contacted for assistance.

Holset “E or QE” Type Air Compressors - In order for these Holset compressors to function properly when installed with an AD-IP™air dryer, the required Holset feedback line and single check valve must be used. The standard AD-IP™air dryer can be used with a separate feedback line and single check OR the AD-IP™DI (Drop In) air dryer model can be used. With AD-IP™DI drop in air dryer in use the separate feed back line and single check valve can be eliminated since these components are part of the air dryer. Refer to Figures 2 & 3.

VEHICLE PREPARATION

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.

LOCATING AD-IP™AIR DRYER ON VEHICLE

1.The AD-IP™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-IP™air dryer must not be exposed to direct wheel splash. If the air dryer is located directly behind the axle, a mud flap is required.

2.Maintain a minimum clearance of 12" between the air dryer and any potential heat source (e.g. vehicle exhaust). If this is not feasible, a heat shield must be used.

3.Make certain that adequate clearance from moving components (e.g. drive shaft, suspension, pitman arm, etc.) is provided.

4.Locate the air dryer on vehicle so that a minimum of 1/2” clearance above the air dryer is available to allow desiccant cartridge removal. A minimum of 8” clearance below the air dryer is required to allow for desiccant cartridge bolt removal.

5.When choosing the mounting location for the AD-IP™air

dryer, note the discharge line length requirements stated under the heading Connecting the Air Lines, elsewhere in this manual.

Important Note: Under normal operating conditions, the maximum inlet air temperature for the AD-IP™air dryer is 160 degrees Fahrenheit.

6.If possible, locate the AD-IP™air dryer so that the purge exhaust does not expel contaminants on vehicle components. If this is not feasible, the purge exhaust may be redirected away from the vehicle by installing an optional special exhaust cover (pc. no. 112609). The exhaust cover is available as a separate item from authorized Bendix parts outlets. A 1” ID hose can be clamped on this special exhaust cover to allow the exhaust to be redirected.

MOUNTING THE AD-IP™AIR DRYER (Refer to

Figure 10)

1.Install the lower mounting bracket on the AD-IP™air dryer. To accomplish this, it will be necessary to choose two, of the four available, mounting holes. To determine which two holes to utilize to attach the lower bracket, take into consideration the piping connections required to install the AD-IP™air dryer and use those that will best position the unit for ease of installation. Utilizing the two cap screws and washers provided with the AD-IP™air dryer retrofit unit, attach the lower mounting bracket and torque to 300-360 in. lbs.

Note: The bracket mounting holes in the end cover may not be pre-tapped. In this case the mounting bolt will self tap the holes on initial installation.

2.Assemble the mounting strap (4) and saddle bracket (5) as illustrated, by utilizing the 5/16" cap screw (1) and sleeve nut (3) provided. Place the upper bracket strap in the end cover channel provided for it, then install the saddle bracket and secure the strap to the saddle bracket using the cap screw (1) and sleeve nut (3) provided. Install, but do not tighten the cap screw at this time. Orient the strap and saddle bracket (5) so that it is in a flat plane with the lower bracket. Torque the 5/16" nut to 60-100 in. lbs. to tighten strap onto the shell.

3.Components and location used to mount the AD-IP™air dryer on the vehicle must be rigid enough to minimize air dryer vibration.

4.Mount the AD-IP™air dryer on the vehicle using 3/8" bolts (grade 5 min.) and washers. Torque to 25 ft. lbs. (300 in.lbs.)

CONNECTING THE AIR LINES

PURGE CONTROL LINE

1.Install a purge control air line having a minimum inside diameter of 3/16 inches between the AD-IP™air dryer end cover control port and an unused unloader port on the governor. The control line must be connected directly to the governor and not in series with automatic drain valves, lubrication systems, etc.

2.The control line should slope downward to the end cover without forming sharp bends or “dips”.

COMPRESSOR DISCHARGE LINE

GENERAL:

Refer to Appendix A, Table A for recommended discharge line lengths and sizes for various vehicle applications and vocations.

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