VMAC – Vehicle Mounted Air Compressors
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Fax: 1-250-740-3201
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4.3 Setup, Performance Testing and Adjustments
This system has been adjusted at the factory for general operation. If
your tests indicate that adjustment is necessary, refer to the owner’s
manual for specific instructions on how to adjust the system.
You can test the system operation using the tools that will be
operated by the system or you can test operations using an orifice
(Figure 17) to simulate tool use. See section 5.1, Table 3 to
determine the correct orifice size
Figure 17 – Test tool
1. Install the test tool in the tank outlet fitting.
2. Make sure that the ball valve is closed.
3. Place the manual transmission in neutral or the automatic
transmission in park and fully apply the park brake.
4. Allow the truck to run until the engine is at operating
temperature.
5. Operate the air compressor system until the oil is warm.
6. Observe the pressure gauge. Pressure should be approximately
150 psi.
Make sure there are no leaks in the test tool. A reservoir
tank is recommended.
7. Slowly open the ball valve on the test tool and observe the
operation. If the throttle enable wire has been connected, the
engine should idle up as the pressure drops to 135 psi.
If the air pressure drops below 100 psi, increase
hydraulic flow to bring the pressure back up. Do not
exceed specifications
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