Page 9
Ref: 2, 3, 6, 7, 8, 11, 15,16
Ref: 1,2, 3, 4, 5, 6, 10, 11,
12, 13, 14, 15, 16
Abnormal Vibration
No Liquid at Spray Gun Abnormal Pump Noise
Ref: 2, 11, 14, 15, 16 Ref: 2, 3, 7, 8, 11, 15, 16
Abnormal Suction Low or Lost Pressure
Ref: 9
1. Spray gun tip too large or worn
2. Suction filter clogged
3. Loose suction line connection
4. Malfunctioning pressure gauge
5. Malfunctioning pressure regu-
lator
6. Worn pump suction and dis-
charge valves
7. Over speeding the pump
8. Suction line too small
9. Pulsation dampening chamber
full of water
10. Worn pump valve chamber
11. Foreign object in suction line
12. Plunger packing worn
13. Pump drive belts loose
14. Pressure regulator by-pass
valve open
15. Suction line valve closed
16. Drive pulley spinning on pump
or engine shaft. Replace
drive key.
TROUBLESHOOTING REFERENCE NUMBERS
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