Truck Mounted Equipment FAQ

Truck Mounted / Modules FAQ

What type of oil do I use in my Air compressor?

a. Vhp30-40 requires Ingersoll Rand all season select

b. Hp60-vhp600 requires Doosan Protec

c. XHP650-1250 requires Doosan XHP605

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Air compressor will not turn on

a) Check all hoses and electrical connections to insure proper assembly

b) Check pressure switch (vhp30-40) for 12 volts on both wires when unit is turned on. Replace switch if only one wire has voltage

c) Check for voltage and ground on the hydraulic solenoid valve (hydraulic drive models)

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Compressor will not shut off

a) Pressure switch stuck (reciprocating models)

b) Solenoid valve stuck

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Unit is running too slow or too fast.

Check GPM of hydraulic flow and refer to the service manual for specifications.

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Front seal failures on hydraulic motor?

a) Plumb case drain line to top of hydraulic reservoir. Do NOT connect to hydraulic return line!

b) Hydraulic supply GPM and PSI greater than recommended

c) Contaminated hydraulic oil

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Compressor getting hot and shutting down

a) Plugged cooler

b) Ambient temperature above LAT

c) Low oil level

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How do I Install the air compressor?

a) Check manual

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Where do I get manuals for my product

Manuals can be purchased at your dealer or contact factory at 800-633-5206

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Compressor causing heat build-up in hydraulic system.

a) Selector/solenoid valve stuck

b) Pressure to high

c) Pressure relief not adjusted correctly

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Truck mounted compressor making a squealing noise when operating

a) Check belts for tightness and make adjustments as necessary

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