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3-07
565 Trailer Sprayer - Maintenance, Service &
Troubleshooting
Section E
6
Section E
SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION
Loss of hydraulic fluid Fittings and tubes leaking Tighten loose fittings and
due to leakage replace worn hoses or
cracked tubing.
Leakage between flange Repair or replace
and housing
Hydraulic liquid pump Pump not primed Check vent line for proper
installation. Clean if necessary.
Low discharge
Air leaks in suction line Check and reseal inlet
fittings
Blocked/clogged line or boom Clean out and replace
strainer
Impeller plugged or loose Inspect and clear
obstruction or tighten
Bypass adjustment set Adjust bypass screw on
improperly side of hydraulic motor
to manufacturer’s
specifications
Poor spray pattern Nozzles too large See nozzle supplier
- Nozzles dribble
Strainer / nozzle clogged Clean strainer
- Spray atomizing Nozzle too small See nozzle supplier
& blowing around
Tractor speed too fast Reduce speed
- Spray streaming Nozzle partially clogged Remove and clean nozzles
(No uniform pattern) and strainer
- Won’t spray Controller not setup See Control Manual
Valves not in correct position See Section B
Poor hydraulics or Troubleshoot hydraulic
no hydraulic power system
Liquid supply blocked Clean strainer
Suction line collapsed Inspect and replace