Check for fluid or air leaks
Inspect Pump for Correct operation
Check for any excessive mechanical noise
Check for excessive fluid pressure pulsation
Perform a pump stop test to ensure correct operation, by ensuring pump stops
when the spraygun trigger is closed and there is no fluid flow.
If pump does not stop inspect ball check valves, replace as required.
Check fluid regulator adjusts fluid pressure correctly.
Replace fluid regulator seat and diaphragm
Replace centre shaft and seals
Inspect and replace if required:- Air Valve module
Air getting into the suction
hose/manifold
Check valve ball/seal damaged
Inspect, clean/replace balls/seats
Check air and fluid supply ball valves
and supply hoses.
Air valve worn or defective
Pump runs but has
excessive pulsation
Air getting into fluid line, air supply
restricted.
Check seals and hose connections.
Fluid check valves damaged
Remove, clean, and inspect seat,
ball, and ball cage.
Replace if suspect or worn.
77-3207-R1.7
14/16
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