BENDIX SD-08-2414 manual Bendix AD-IPAIR Dryer Installation, Retrofitting the AD-IP AIR Dryer

8.Using an adjustable wrench or a socket, tighten the desiccant cartridge bolt (10), to secure the desiccant cartridge (11) to the end cover (6). Torque the desiccant cartridge bolt to 65–75 ft-lbs (40 ft-lbs minimum). Do not over torque.

BENDIX® AD-IP®AIR DRYER INSTALLATION

1.Using the relationship marks made during step 7 of the Bendix® AD-IP®Air Dryer Removal Procedure, install the lower mounting bracket (9) on the end cover (6) and secure it using the two 3/8” cap screws and washers (7 & 8). Torque the cap screws to 300–360 in-lbs.

2.Using the relationship marks made during step 6 of the AD-IPAir Dryer Removal Procedure, install the saddle bracket (5) and mounting strap (4) on the end cover (6), and using the 5/16” cap screw (1) and sleeve nut

(3) secure the strap to the saddle bracket. Tighten the 5/16” nut on the upper mounting bracket. Torque to 60-100 in-lbs.

3.Install the air dryer on the vehicle using the four bolts that secure both the upper and lower mounting brackets.

4.Reconnect the three airlines to the proper ports on the end cover (identified during step 3 of the AD-IP Air Dryer Removal).

5.Reconnect the vehicle wiring harness to the Bendix AD-IP air dryer heater and thermostat assembly connector by plugging it into the air dryer connector until its lock tab snaps in place.

6.Before placing vehicle back into service, perform the Operation and Leakage Tests stated elsewhere in this manual.

RETROFITTING THE AD-IP AIR DRYER

GENERAL

The following retrofit instructions are presented for reference purposes only since Bendix aftermarket retrofit and replacement air dryers are packaged with the most up- to-date installation instructions. The instructions packaged with the Bendix AD-IP air dryer should be followed in lieu of those presented here.

The preceding portion of this manual deals with “in-service” repair and/or replacement of the AD-IP air dryer. The portion of the manual that follows is concerned with installing an AD-IP air dryer on a vehicle not previously equipped with one.

VEHICLE APPLICATION REQUIREMENTS

The basic application requirements presented here apply to a standard air dryer installation. 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, refuse trucks, city coaches, bulk trailer unloading operations and other high air consumption systems. While the Bendix AD-IP air dryer can be used on these vehicles, the standard installation procedure presented in this manual may require modification to ensure proper operation and service life. Consult your local authorized Bendix® parts outlet or sales representative for additional information.

Charge Cycle Time — The AD-IP air dryer is designed to provide clean, dry air for the brake system. When a vehicle’s air system is used to operate non-brake air accessories it is necessary to determine that, during normal daily operation the compressor should recover from governor “cut-in” to governor “cut-out” (usually 100 psi to 120 psi) in 90 seconds or less at engine RPMs normal to the vehicle vocation. If the recovery time consistently exceeds this limit, it may be necessary to “bypass” the air accessory responsible for the high air usage. Consult your local authorized Bendix parts outlet or sales representative for additional information.

Purge Cycle Time — During normal vehicle operation, the air compressor must remain unloaded for a minimum of 30 seconds. This minimum purge time is required to ensure complete regeneration of the desiccant material. If the purge time is occasionally shorter than the times specified, no permanent ill effect should be expected, however, if the purge time is consistently less than the minimum, an accessory bypass system must be installed. Contact the nearest authorized Bendix parts outlet or Bendix representative for additional information. Note: Reservoir Volume - Total vehicle reservoir volume can impact the Charge and Purge Cycle time. The chart below can be used as a guide in determining if additional help is required.

Total Vehicle Reservoir

Volume	Requirement
Less than 9,000 cu. in	Standard AD-IP Air Dryer
9,000 - 12,500 cu. in	Extended Purge AD-IP Air
	Dryer
Greater than 12,500 cu. in	Contact Bendix Rep. or
	Bendix Engineering

Air Compressor Size — Although the AD-IP air dryer can be used in conjunction with larger compressors, it was designed primarily for units rated for up to 30 CFM. It is recommended that when using the AD-IP air dryer with a compressor which has a rated displacement exceeding 30 CFM that an authorized Bendix parts outlet or Bendix marketing representative be contacted for assistance.

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