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Multi Pro 5700--D
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Spray System
Troubleshooting
Problem Possible Cause
Spray system leaks fluid. Fitting(s), hose(s), or tube(s) are loose or damaged.
O--ring(s) or seal(s) are missing or damaged.
Spray tank drain valve not seating.
Fluid leaking from bottom of spray
pump.
Faulty diaphragm(s) in spray pump.
Excessive suction hose vibration. Suction screen in tank is plugged.
Spray pump suction line has an air leak.
Suction tube in spray tank has air leak.
Suction line is restricted.
Suction dampener diaphragm is damaged.
Spray pressure decreases while
operating sprayer.
Suction line is restricted.
Suction screen in tank is plugged.
Agitation jet(s) in tank loose (only occurs if agitation switch is on).
Spray nozzles worn or damaged.
Pressure line or component is restricted or damaged.
Engine speed is low.
Pressure relief valve in tank is stuck.
Spray pump is damaged.
Nozzles on spray boom section leak
when boom is switched off.
Diaphragm in turret body is leaking or damaged.
Boom valve motor for affected boom is not seating.
Spray pump doesn’t rotate. Spray pump switch off or damaged.
Pressure increase/decrease switch not set.
Key on spray pump or hydraulic motor shaft is sheared.
Spray pump coupler assembly is damaged.
Pump drive hydraulic motor not engaged or is damaged (see Chap-
ter 4 -- Hydraulic System).
Pro Control (if equipped) not set up correctly.