BENDIX®AD-IS®AIR DRYER AND RESERVOIR SYSTEM

TROUBLESHOOTING CHART

 

SYMPTOM

 

CAUSE

 

REMEDY

2.

Wa t e r i n t h e v e h i c l e

A.

Maximum air dryer inlet temperature is

A.

Check for excessive carbon build up in the compressor

 

reservoirs

 

exceeded due to improper discharge

 

discharge line. Replace if required. Make certain that the

 

 

 

line length.

 

discharge line length is at least 6 ft. Increase the discharge

 

 

 

 

 

line length and/or diameter to reduce air dryer inlet

 

 

 

 

 

temperature.

 

 

B.

Air system charged from outside

B.

If system must have outside air fill provision, outside air should

 

 

 

air source (outside air not passing

 

pass through air dryer.

 

 

 

through air dryer).

 

 

 

 

C. Excessive air usage - Air dryer not

C.

Refer to the Bendix Advanced Troubleshooting Guide for Air

 

 

 

compatible with the vehicle air system

 

Brake Compressors (BW1971) for proper application of the

 

 

 

requirement (Improper air dryer/

 

Bendix® AD-IS®air dryer and reservoir system. An extended

 

 

 

vehicle application)

 

purge model (Bendix® AD-IS®EP) is available for many higher

 

 

 

 

air usage vehicles, such as city buses and construction

 

 

 

 

 

 

 

 

 

 

vehicles.

 

 

 

 

 

If the vehicle is equipped with high air usage accessories,

 

 

 

 

 

such as trailer pump-off systems or central tire inflation, the

 

 

 

 

 

air for these accessories must by-pass the dryer reservoir

 

 

 

 

 

system.

 

 

D.

Desiccant requires replacement.

D.

Replace the desiccant cartridge assembly.

 

 

E.

Air by-passes desiccant cartridge

E.

If the vehicle uses a Holset compressor, inspect the feedback

 

 

 

assembly.

 

check valve for proper installation and operation.

 

 

F. Air dryer not purging.

F.

Refer to Symptom 6.

 

 

G. Purge (air exhaust) time is insufficient

G. Refer to Symptom 1.

 

 

 

due to excessive system leakage.

 

 

3.

Safety valve on the air dryer

A.

Defective AD-IS air dryer and reservoir

A.

Test to determine if air is passing through check valve. Repair

 

is “popping off” or exhausting

 

system delivery check valve.

 

or replace. Refer to Symptom 1, Remedy B.

 

air.

 

 

 

 

 

 

 

 

 

 

 

 

B.

Safety valve setting too low (<150 p.s.i.)

B.

Replace the safety valve.

 

 

C.

System pressure too high (>135 p.s.i.)

C.

Test with an accurate gauge. Replace the governor if

 

 

 

 

 

necessary.

 

 

D. Excessive pressure pulsations from

D.

Increase volume in discharge line. This can be accomplished

 

 

 

compressor. (Typical single cylinder

 

by adding a 90 cubic inch (or larger) reservoir between the

 

 

 

type).

 

compressor and the AD-IS®air dryer and reservoir system.

 

 

 

 

 

 

14

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BENDIX SD-08-2418 manual Replace the safety valve
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SD-08-2418 specifications

The BENDIX SD-08-2418 is a sophisticated air brake system designed for heavy-duty trucks and commercial vehicles. This unit is widely recognized for its reliability and performance in demanding driving conditions. Engineered to enhance safety and control, the SD-08-2418 is particularly popular among fleet operators and vehicle manufacturers.

One of the main features of the BENDIX SD-08-2418 is its advanced modulation technology, which allows for optimal brake application and release. This technology ensures a smooth and controlled braking experience, reducing the risk of wheel lock-up and ensuring that drivers maintain steering control during hard stops. This is crucial for maintaining safety when operating large vehicles under heavy loads.

The SD-08-2418 also incorporates a lightweight design, which contributes to improved fuel efficiency and overall vehicle performance. The unit is constructed from high-quality materials that not only reduce weight but also enhance durability and longevity. This is vital for trucks that endure rigorous use across varied terrains and conditions.

Another notable characteristic of the BENDIX SD-08-2418 is its compatibility with advanced electronic braking systems (EBS). This compatibility allows for efficient integration with modern vehicle technologies such as anti-lock braking systems (ABS) and traction control systems. By enabling the seamless exchange of information between the braking system and vehicle control units, the SD-08-2418 enhances the overall safety and performance of the truck.

Moreover, the BENDIX SD-08-2418 features a user-friendly installation process, which is essential for minimizing downtime during maintenance. Its straightforward design allows technicians to replace or service the unit with ease. This reduces operational costs and promotes efficient fleet management.

In conclusion, the BENDIX SD-08-2418 is a state-of-the-art air brake system that combines advanced features, reliable performance, and ease of installation. Its innovative technology and lightweight design make it a top choice for commercial vehicle operators who prioritize safety, efficiency, and durability in their braking systems. As the demands on modern vehicles evolve, the BENDIX SD-08-2418 remains a key player in the field of heavy-duty braking solutions.
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