Troubleshooting - Smith Industrial and Contractor Series Use And Care Manual

TROUBLE
Sprayer starts to spray
when pumping or sprayer
will not stop spraying
when shut-off lever is
released.
Sprayer leaks at pump or
sprayer does not build
pressure.
Sprayer material overflows
through pump barrel or
pump handle rises when
handle is unlocked.
Hose leaks at tank or
shut-off.
Sprayer is difficult to
pump.
Sprayer tank leaks.
Nozzle drips when shut-off
lever is released.
Nozzle tip leaks, poor spray
pattern, partial spray or
complete stoppage.

TROUBLESHOOTING

LOOK FOR
Shut-off lock is engaged.
1. Dirt or debris on pump gasket
(#3F) or closure.
2. Chipped, torn, swollen, or
defective pump gasket (#3F).
3. Check valve (#3G) at bottom of
pump assembly.
4. Worn or damaged o-ring (#3D)
on piston.
1. Dirt or debris under check
valve (#3G) on pump.
2. Chipped, torn, or swollen
pump check valve (#3G).
1. Loose hose at tank.
2. Cracked, swollen, or faulty hose.
3. Loose hose at shut-off.
1. Damaged piston o-ring (#3D)
2. Piston o-ring (#3D) is dry.
Evidence of spray material
escaping from the tank.
1. Dirt or debris in shut-off valve.
2. Damaged o-rings or seals in
shut-offs (Kit #11).
1. Spray extension or nozzle
clogged.
2. Dirty or clogged nozzle tip.
REMEDY
Squeeze shut-off lever and rotate the lock
towards the nozzle as described in Spraying
and Locking section.
1. Clean dirt or debris from gasket (#3F) or
closure.
2. Remove old gasket (#3F) and replace with
new as described in Pump Disassembly &
Reassembly section.
3. Replace if missing or damaged as described
in Pump Disassembly & Reassembly section.
4. Replace if worn or damaged as described in
Pump Disassembly & Reassembly section.
1. Clean check valve (#3G) and valve sealing
surface on pump.
2. Replace check valve (#3G) as described
in Pump Disassembly & Reassembly section.
1. Tighten hose nut at tank.
2. Replace hose.
3. Tighten hose at shut-off.
1. Replace piston o-ring as described in
Pump Disassembly & Reassembly section.
2. Lubricate piston o-ring as described
in Pump Disassembly & Reassembly section.
Replace entire sprayer.
1. Clean shut-off as described in Shut-off
Maintenance section.
2. Service shut-off seals as described in
Maintenance service (Kit #11).
1. Remove nozzle and clean as described in
Nozzle Maintenance section.
2. Clean the nozzle tip with a soft brush.
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