| PROBLEM |
CAUSE |
SOLUTION |
| Difficulty in moving
pump handle
|
• dirty cylinder wall
|
• remove piston, clean
and
replace |
| • O-ring on piston swollen
(not cleaned properly) |
• replace O-ring |
| • no lube on piston/cylinder
|
• lubricate with heavy
grease |
| |
| Low pressure &
resistance during pumping
|
• damaged O-ring in
pressure relief valve |
• replace O-ring |
| • worn or damaged O-ring
on piston |
• replace O-ring |
| • tank cap not tight
|
• tighten cap |
| • no lube on piston cylinder
|
• lubricate piston, O-ring
and
cylinder |
| |
| Leaks from end of spray wand
|
• worn or damaged O-ring
in shut-off valve |
• rebuild shut-off valve
|
| Leaks from inside cylinder
|
• worn or damaged umbrella
valve at bottom of cylinder |
• replace umbrella valve
|
| Leaks under cap
|
• damaged or missing
gasket |
• replace gasket |
| • screw cap not tight
|
• tighten tank cap |
| Leaks from shut-off valve |
• worn, damaged or loose
fittings, lack of lubrication |
• tighten fittings and
replace
worn parts, disassemble and
lubricate O-rings |
| Leaks from hose |
• worn, damaged or loose
fittings |
• 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
|
• tighten tank cap |
| • gasket twisted or lacking
lubrication |
• straighten gasket and
lubricate
with grease |
| • tank lip damaged |
• repair or replace tank
|
| Note: Always
wear rubber gloves, safety goggles and appropriate protective
clothing when repairing a sprayer. Work in well ventilated area.
Prior to repair, flush unit with water by filling, then spraying
the water into an appropriate container or area. Ensure that all
pressure is released by locking the shut-off valve in the open
position. Once a repair is completed, fill the unit with clean
water, pressurize, and check for leaks. If the sprayer leaks,
Do Not Use. Repair leaks and recheck. |
