8
Low High Pump Motor Excess Reason and remedy
Vacuum Pressure Vacuum Pressure Overheat Overload Noise for problem.
••At Pump •• Filter dirty. Clean or replace.
•• At pump •• Muffler dirty. Clean or replace.
•• Valves dirty or valves bent.
Clean or replace.
•• Worn piston rings.
Repair or replace.
••• Relief valve set too high.
Inspect and adjust.
•• Relief valve set too low.
Inspect and adjust.
••At pump At pump •• Plugged vacuum/pressure line.
Inspect and repair.
• At pump Collapsed vacuum line.
Inspect and repair.
•• Low voltage, wonʼt start.
Check power source.
•••Voltage wrong.
Check power source.
•• •Worn rings/piston hitting cylinder.
Replace.
••Cylinder misadjustment.
Realign.
•• Leaky hose or check valve.
Replace.
•• • ••Dirt or liquid on top of piston.
Inspect and clean.
•• • • Motor not wired correctly.
Check wiring diagram/line voltage.
•• •Blown head gasket.
Replace.
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