EN
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Air entering the suction
hose/manifold
Check o-rings and hose
connections
Worn piston seals
Replace piston seals.
Ball checks not seating
correctly.
Fault Finding
Fluid Section
Symptom
Possible Cause
Remedy
Pump will not ‘Prime’
Replace piston seals.
Replace bellows seal, check piston
seal, replace as necessary
Excessive Pressure Pulsation
No power
Check electrical supply
Inverter Unit or safety
interlocks ‘tripped’
Check inverter and fault
conditions
Pump runs, but lack of pressure
Worn piston seals
Inspect, clean/replace
balls/seats
Pump will not run
Main shaft bearings worn
Cam follower worn
Bellows seal failure
Ball checks not seating
correctly.
Cam direction incorrect
Inverter Unit or safety
interlocks ‘tripped’
Inspect, clean/replace
balls/seats
Paint leaking from inside cover
Replace bellows seal, check piston
seal, replace as necessary
77-3229 R4.1
29/36
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