BENDIX BW1845 User Manual download pdf (Page 16)

*This guide is only for vehicles that use desiccant air dryers.

The guide consists of an introduction to air brake charging system

components, a table showing recommended vehicle maintenance

schedules, and a troubleshooting symptom and remedy section with tests

to diagnose most charging system problems.

Advanced Troubleshooting Guide

for Air Brake Compressors

This troubleshooting guide obsoletes and supersedes all previous published

troubleshooting information relative to Bendix air compressors.

Air brake charging system:

Slow build (9.0) . . . . . . . . . . . . . . . . . 24 - 25

Doesn’t build air (10.0) . . . . . . . . . . . . . . . 26

Air dryer:

Doesn’t purge (14.0) . . . . . . . . . . . . . . . . . 27

Safety valve releases air (12.0) . . . . . . . . . 27

Compressor:

Constantly cycles (15.0) . . . . . . . . . . . . . . 27

Leaks air (16.0) . . . . . . . . . . . . . . . . . . . . . 28

Safety valve releases air (11.0) . . . . . . . . . 26

Noisy (18.0) . . . . . . . . . . . . . . . . . . . . . . . . 28

Reservoir:

Safety valve releases air (13.0) . . . . . . . . . 27

INDEX

Air

Coolant

Engine

Oil

Compressor leaks coolant (17.0) . . . . . . . . . . 28

Oil consumption (6.0) . . . . . . . . . . . . . . . . . . . 24

Oil Test Card results (1.0) . . . . . . . . . . . . . . . . 19

Oil is present:

On the outside of the compressor (2.0) . . . 20

At the air dryer purge/exhaust

or surrounding area (3.0) . . . . . . . . . . . 20

In the supply reservoir (4.0) . . . . . . . . 21 - 23

At the valves (5.0) . . . . . . . . . . . . . . . . . . . 23

At air dryer cartridge (7.0) . . . . . . . . . . . . . 24

In the ping tank or compressor

discharge aftercooler (8.0) . . . . . . . . . . 24

Symptom Page Number

(1) Oil Leakage at Head Gasket . . . 29

(2) System Leakage . . . . . . . . . . . . 29

(3) Compressor Discharge and

Air Dryer Inlet Temperature . . . . 29

(4) Governor Malfunction . . . . . . . . 30

(5) Governor Control Line . . . . . . . . 30

(6) Compressor Unloader . . . . . . . . 30

BASIC Test Information . . . . . . 32-34

Test Procedures

Maintenance Schedule and

Usage Guidelines (Table A) . . 18

Symptom Page Number

Maintenance & Usage Guidelines

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 39 40

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BENDIX BW1845 User Manual Page 16

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