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Pump hard to prime.
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Leak in suction hoses.
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Check plumbing for leaks. Tighten and seal where needed.
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Pump will not prime.
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Strainer plugged.
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Clean strainer.
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|
|
Pump set too low.
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See PRIMING AND INITIAL START UP OF PUMP in Liquid Fertilizer-Piston Pump section.
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Pump valves fouled.
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See your John Deere dealer.
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|
Packings worn.
|
See your John Deere dealer.
|
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Pump metering low.
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Leak in suction hoses.
|
Check plumbing for leaks. Tighten and seal where needed.
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|
|
Open special fitting check valve.
|
See your John Deere dealer.
|
|
|
Strainer plugged.
|
Clean strainer.
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|
|
Pump set too low.
|
Set pump according to rate chart.
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|
|
Pump valves fouled.
|
See your John Deere dealer.
|
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|
Pump drive set wrong.
|
Set drive according to rate chart.
|
|
|
Broken valve spring.
|
See your John Deere dealer.
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|
Pump metering high.
|
Pump set too high.
|
Select pump number according to rate chart or adjust upward due to low drive wheel slippage.
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|
|
Pump drive set wrong.
|
Set drive according to rate chart.
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|
|
Valve stuck open.
|
See your John Deere dealer.
|
|
|
Broken valve spring.
|
See your John Deere dealer.
|
|
|
Contaminates under valve.
|
See your John Deere dealer.
|
|
Fertilizer leaks past pump when pump is stopped.
|
Valve stuck open.
|
See your John Deere dealer.
|
|
|
Broken valve spring.
|
See your John Deere dealer.
|
| Symptom |
Problem |
Solution |
|
Leaks between pump and crankcase.
|
Rod packing worn.
|
See your John Deere dealer.
|
|
Pump using excessive oil.
|
Oil seals worn.
|
See your John Deere dealer.
|
|
|
O-rings leaking.
|
See your John Deere dealer.
|
|
Pump operates noisily.
|
Pump components worn.
|
See your John Deere dealer.
|
|
Fertilizer leaks at opener when machine stopped. (Unit Mounted Double-Disk Fert. Opener or Frame Mounted Single-Disk [Low Pressure/Flow Divider Delivery] Only)
|
Inspect 1 psi check valves.
|
Replace necessary check valves.
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