Piston pump, Piston pump -3 – Kinze 3700 Front Folding Planter Rev. 7/14 User Manual
Page 165
TM
Model 3700
M0233-01
Rev. 10/11
6-3
Troubleshooting
piSTOn pUMp
prObLeM
pOSSibLe CaUSe
SOLUTiOn
Pump hard or impossible to
prime.
Valves fouled or in wrong place.
Inspect and clean valves.
Air leak in suction line.
Repair leak.
Pump set too low.
Adjust pump setting.
Packing washers worn out.
Replace.
Low metering.
Valves fouled or in wrong place.
Inspect and clean valves.
Air leak in suction line.
Repair leak.
Pump set too low.
Adjust pump setting.
Broken valve spring.
Replace spring.
Over meters.
Broken discharge valve spring.
Replace spring.
Trash under valves.
Inspect and clean valves.
Improper rate setting.
Adjust pump setting.
Leaks through when stopped.
Broken discharge valve spring.
Replace spring.
Trash under valves.
Inspect and clean valves.
Fertilizer solution leaking
under stuffing box.
Packing washers worn out.
Replace.
Pump using excessive oil.
Oil seals or O-ring worn and leaking.
Replace.
Pump operates noisily.
Crankcase components worn
excessively.
Inspect and replace if necessary.