AD-4™AIR DRYER TROUBLESHOOTING CHART (Continued)

SYMPTOMS

CAUSE

REMEDY

2. Water and/or Oil in

F. Air compressor

F. Restricted discharge line. See Appendix A,

Supply or Service

discharge and/or air

Table A, column 1 & 2 for recommended sizes.

Reservoir (continued).

dryer inlet temperature

If discharge line is restricted or more than 1/16"

 

too high.

carbon build up is found, replace the discharge

 

line. Replace as necessary.

 

 

 

 

Discharge Line Freeze-Up The discharge line must

 

 

maintain a constant slope down from the

 

 

compressor to the air dryer inlet fitting to avoid low

 

 

points where ice may form and block the flow. If,

 

 

instead, ice blockages occur at the air dryer inlet,

 

 

insulation may be added here, or if the inlet fitting is

 

 

a typical 90 degree fitting, it may be changed to a

 

 

straight or 45 degree fitting. For more information on

 

 

how to help prevent discharge line freeze-ups, see

 

 

Bendix Bulletins TCH-08-21 and TCH-08-22. Shorter

 

 

discharge line lengths or insulation may be required

 

 

in cold climates.

 

 

Insufficient coolant flow through compressor.

 

 

Inspect coolant line. Replace as necessary (I.D.

 

 

is 1/2" min.). Inspect the coolant lines for kinks

 

 

and restrictions and fittings for restrictions.

 

 

Replace as necessary. Verify coolant lines go

 

 

from engine block to compressor and back to the

 

 

water pump. Repair as necessary.

 

 

Restricted air inlet (not enough air to

 

 

compressor). Check compressor air inlet line for

 

 

restrictions, brittleness, soft or sagging hose

 

 

conditions etc. Repair as necessary. Inlet line

 

 

size is 3/4 ID. Maximum restriction requirement

 

 

for compressors is 25 inches of water. Check the

 

 

engine air filter and service if necessary (if

 

 

possible, check the air filter usage indicator).

 

 

Poorly filtered inlet air (poor air quality to

 

 

compressor). Check for leaking, damaged or

 

 

malfunctioning compressor air inlet components

 

 

(e.g. induction line, fittings, gaskets, filter bodies,

 

 

etc.). Repair inlet components as needed. Note:

 

 

Dirt ingestion will damage compressor and is not

 

 

covered under warranty.

 

 

If you found excessive oil present in the service

 

 

reservoir and you did not find any issues above,

 

 

the compressor may be passing oil.

 

 

Replace compressor. If still under warranty, follow

 

 

normal warranty process.

 

 

 

 

G. Compressor malfunction.

G. If you found excessive oil present in the service

 

 

reservoir and you did not find any issues above,

 

 

the compressor may be passing oil. Test the

 

 

compressor using the BASIC cup method as

 

 

described in the Bendix compressor service

 

 

manual and referred to in Appendix A, Table A,

 

 

column 5.

 

 

Replace compressor. If still under warranty, follow

 

 

normal warranty process.

 

 

 

18

Page 17 Page 19
Page 18
Image 18
BENDIX BW1450 Maintain a constant slope down from, Compressor to the air dryer inlet fitting to avoid low, Cold climates
Page 17 Page 19

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.
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