FAQs: Piston
Q: Can water be pumped through my piston unit?
A: No, clean dry air only.
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Q: My piston pump is leaking around the heads is this normal?
A: The piston unit is not leak proof, leakage around the head is normal, and doesn’t affect the specified flow rate of unit.
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Q: What kind of oil do I need for my piston unit?
A: None, Gast piston units are oilless, and do not require lubrication.
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Q: Can I pump combustible gas through my Piston pump?
A: No, none of Gast models are designed to pump combustible gases.
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Q: I received my dual voltage unit, wired it for 115 volt power, it runs very slow and lopes. What is wrong?
A: The unit is wired for high voltage at from the factory, check the motor label to see how to rewire unit to for low voltage.
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Q: What can I use to clean my piston unit with?
A: Gast flushing solvent AH255D, if this is not available you can use electrical contact cleaner.
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Q: Are there repair kits available for my piston unit?
A: Yes, check the operation manual for kit required. If you don’t have the manual, go to Technical Documents and choose manual.
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Q: What comes in a repair kit?
A: Rings, seals, rider ring, intake & exhaust valves, and gaskets for the head and cylinder.
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Q: Can I replace the motor of my piston unit?
A: The motor can not be replaced in the field, the unit should be sent to an authorized service center.
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Q: Can I replace the rod assemblies in of my piston unit?
A: The rod assembly can not be replaced in the field, the unit should be sent to an authorized service center.
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