Manuals / BENDIX / Household Appliance / Air Cleaner

BENDIX BW1450 Retrofitting the AD-4AIR Dryer, Re-Installation, Vehicle Application Requirements

Models: BW1450

1 24
Download 24 pages 16.16 Kb
Page 11
Image 11

RE-INSTALLATION

1.Install the assembled AD-4™air dryer (if an AD-4™air dryer with a lower right angle bracket instead of a lower mounting strap is being serviced proceed to step #2) on the vehicle by sliding it into mounting brackets until mounting bracket hook catches under the lip of the cover. Proceed to step #3.

2.Install the assembled AD-4™air dryer back onto the vehicle by slipping it into the upper mounting bracket. Align the two unused holes in the end cover with the bottom mounting bracket such that the bottom bracket supports air dryer. The AD-4™air dryer end cover should rest on the bracket. Using the remaining two 3/8" cap screws, four special washers, and two locknuts, secure the air dryer to the lower bracket. Tighten, then torque the two remaining cap screws to 270-385 in. Ibs.

3.Tighten the 5/16" x 4-1/2" bolt and nut on the upper mounting bracket. Torque to 80-120 in Ibs.

4.Reconnect the three airlines to the proper ports on the end cover (identified during disassembly).

5.Reconnect the thermostat and heater wire and place boot in position to protect connection by forcing it over knob on plastic cover.

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

RETROFITTING THE AD-4™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 AD-4™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-4™air dryer. The portion of the manual that follows is concerned with installing an AD-4™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 bulk trailer unloading operations and other high air consumption/continuous flow systems. While the AD-4™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

Bendix parts outlet or sales representative for additional information.

1.Charge Cycle Time - The AD-4™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 commensurate with 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.

2.Purge Cycle Time - During normal vehicle operation, the air compressor must remain unloaded for a minimum of 20 seconds for the standard AD-4™air dryer or 30 seconds for the extended purge model. These minimum purge times are 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 by-pass system must be installed.

3.European Air Brake Systems - Brake systems that incorporate compressors without integral unloading mechanisms and/or utilize a compressor discharge line unloader valve have special AD-4™air dryer installation requirements. Consult your local authorized Bendix parts outlet or sales representative for additional information.

4.Air Compressor Size - Although the AD-4™air dryer can be used in conjunction with larger compressors, it was designed primarily for units rated for up to 17 CFM. It is recommended that when using the AD-4™air dryer with a compressor which has a rated displacement exceeding 17 CFM that an authorized Bendix parts outlet or Bendix marketing representative be contacted for assistance.

5.Holset “E or QE” Type Air Compressors - In order for the AD-4™air dryer to function properly when installed with the Holset Type “E or QE” compressor, several specialized Holset components are required. Consult your local authorized Holset parts outlet or sales representative for additional information.

6.Use of Standard or Extended Purge AD-4™Air Dryer - Use the following guidelines:

Total Vehicle Reservoir

Volume

Requirement

Less than 9,000 cu. in

Standard AD-4™Air Dryer

9,000 - 12,500 cu. in

Extended Purge AD-4™

 

Air Dryer

Greater than 12,500 cu. in

Contact Bendix Rep. or

 

Bendix Engineering

11

Page 10 Page 12
Page 11
Image 11
BENDIX BW1450 manual Retrofitting the AD-4AIR Dryer, Re-Installation, Vehicle Application Requirements, Air Dryer
Page 10 Page 12

BW1450 specifications

The BENDIX BW1450 is a highly regarded air brake system that delivers exceptional performance and reliability in the heavy-duty truck and automotive sectors. The BW1450 is designed with advanced technologies and engineering breakthroughs that ensure enhanced safety and efficiency in braking operations.

One of the standout features of the BENDIX BW1450 is its robust and compact design. Constructed to withstand the rigors of heavy use, the system is both lightweight and durable, allowing for easy installation and maintenance. It incorporates a corrosion-resistant finish that helps protect against environmental factors, ensuring longevity and dependability.

The BW1450 leverages advanced modulation technology, which provides superior control during braking. This technology allows for gradual engagement and disengagement of the brakes, significantly reducing the risk of skidding or jackknifing during emergency stops. The system's sophistication extends to its ability to maintain consistent brake performance under various load conditions, making it a versatile choice for different vehicle types.

Another significant characteristic of the BENDIX BW1450 is its integrated Air Disc Brake technology. This feature not only improves the overall stopping power but also results in shorter stopping distances. In addition to enhanced performance, the air disc brakes are easier to maintain compared to traditional drum brakes, reducing downtime and service costs.

The BENDIX BW1450 also incorporates smart sensor technologies that monitor brake performance, providing real-time data to drivers and fleet operators. This capability enhances fleet management as it allows for timely maintenance interventions and ensures that the braking system operates optimally at all times.

Safety is a paramount concern in any braking system, and the BENDIX BW1450 is equipped with an anti-lock braking system (ABS). This feature prevents wheel lock-up during hard braking, thus providing additional control in slippery conditions and enhancing the vehicle's stability. Moreover, the system meets or exceeds various industry safety standards, reinforcing its position as a reliable choice for heavy-duty applications.

In conclusion, the BENDIX BW1450 air brake system represents a combination of innovative design, cutting-edge technology, and reliable performance. Its lightweight construction, advanced modulation control, air disc braking capabilities, and integrated safety features make it an exemplary choice for the demanding requirements of heavy-duty vehicles.