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Troubleshooting Guide
| Problem | Cause | Solution |
|---|---|---|
| Difficulty in moving pump handle | • dirty cylinder wall • O-ring on piston swollen (not cleaned properly) • no lube on piston/cylinder | • remove piston, clean and replace • replace O-ring • lubricate with heavy grease |
| Low pressure & resistance during pumping | • damaged O-ring in pressure relief valve • worn or damaged O-ring on piston • tank cap not tight • no lube on piston cylinder | • replace O-ring • replace O-ring • tighten cap • lubricate piston, O-ring and cylinder |
| Leaks from end of spray wand Leaks from inside cylinder Leaks under cap Leaks from shut-off valve Leaks from hose | • worn or damaged O-ring in shut-off valve • worn or damaged umbrella valve at bottom of cylinder • damaged or missing gasket • screw cap not tight • worn, damaged or loose fittings, lack of lubrication • worn, damaged or loose fittings | • rebuild shut-off valve • replace umbrella valve • replace gasket • tighten tank cap • tighten fittings and replace worn parts, disassemble and lubricate O-rings • tighten fittings and replace worn parts |
| Pressure relief valve sticks | • lack of lubrication or contaminated relief valve assembly | • clean and lubricate pressure relief valve |
| Air leak – air coming out between the two halves of the pump support | • tank cap not tight • gasket twisted or lacking lubrication • tank lip damaged | • tighten tank cap • straighten gasket and lubricate with grease • repair or replace tank |