This manual provides diagnostic procedures, maintenance instructions, and testing steps for WABCO air compressors used in vehicles.
This document serves as a service guide for the diagnosis and maintenance of WABCO air compressors. It outlines safety precautions that must be followed before performing any tests to prevent injury or damage to equipment.
The manual details specific diagnostic steps for common issues such as excessive oil consumption, cooling system pressure problems, long inflation times, and insufficient airflow. It also provides procedures for testing the coupling shaft and verifying functionality after replacing the air compressor. This manual is written in Chinese.
| Control pressure rise threshold | > 7 bar |
|---|---|
| Coupling shaft wear limit for replacement | ≥ 1.0 mm |
| Faulty coupling shaft failure limit | ≥ 1.2 mm |
Excessive oil consumption is indicated by wet oil residue on the test paper, not just black spots.
The coupling shaft must be replaced if the wear value is greater than or equal to 1.0 mm.
The control pressure must rise above 7 bar once the cut-off pressure is reached.