VMAC
–
Vehicle Mounted Air Compressors
Toll Free:
1-888-241-2289
Fax: 1-250-740-3201
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2. Make sure that the ball valve is closed.
3. Place the transmission in park and fully apply the park brake.
4. Allow the engine to run until it 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.
7. Open the ball valve on the test tool and observe the engine
tachometer. Engine speed should increase to 1,800 to 2,200
RPM.
8. Close the air valve slowly to allow the system pressure to rise.
9. Once the system pressure is at maximum, slowly open the ball
valve on the test tool until the pressure on the gauge begins to
drop. Engine speed should start to increase when air pressure
drops to approximately 140 PSI.
5.4 System Identification and Warnings
The System Identification Number Plate must be attached to the
truck at the time of installation. This plate provides information which
allows VMAC to assist in customer inquiries and the ordering of
parts. Mark and drill two 7/64 inch holes to the top surface of the
radiator support in front of the battery, then secure the plate with self-
tapping screws.
System ID number plate
Figure 5.2
