Component Tests and General Diagnostics

Inspection





Check for damage or degradation in the parts mentioned below.
- Exhaust brake valve
- Exhaust brake shaft
- Butterfly valve
- Bush
- Power chamber

Unit check
- Negative pressure in the power chamber caused by the vacuum pump
When a pressure of 53.3 to 93.3 kPa (400 to 700 mmHg) is applied, the exhaust brake valve should open or close smoothly.