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Linkages binding.
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Frozen or worn ball joints on linkage.
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Lubricate or replace.
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Linkage rods bent or interfering.
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Adjust at ball joints or straighten.
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Control shaft on pump binding.
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(See your John Deere dealer).
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System overheating. (Warning light comes on).
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Air passages in cooler core plugged.
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Clean cooler core.
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Fan belt slipping or broken.
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Check automatic belt tensioner or replace fan belt.
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Rotary screen belt broken.
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Replace belt.
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Exceeding relief valve pressure.
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Shift to lower gear.
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Picker will not propel forward or reverse.
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Hydrostatic oil not properly warmed up.
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When operating in temperatures below -12°C (10°F), run-in picker 10-15 minutes to warm up hydrostatic drive oil.
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No voltage to destroker valve on hydro.
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Sit squarely on seat. Move hydro lever to Neutral and reset. (If still no voltage, see your John Deere dealer).
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Transmission inoperative.
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Check transmission and linkages or see your dealer.
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Low on oil.
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Check for leak and correct. Fill reservoir with oil.
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Broken coupling from motor to transmission.
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Repair as needed.
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Air leak in system.
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Tighten connections.
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Defective U-joint from engine to pump.
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Repair as needed.
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Plugged oil filter.
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Change filter element.
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Exceeding relief valve pressure.
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Shift to lower gear.
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| Symptom |
Problem |
Solution |
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Transmission hard to shift or will not shift.
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Drive system unable to build up pressure.
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(See your John Deere dealer).
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Hydro lever not in neutral.
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Move hydro lever to neutral or adjust hydro linkage.
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Transmission shifter cam shaft corroded within transmission cover.
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Remove, polish shaft with emory cloth, and re-install.
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Ground travel speed erratic.
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Hydraulic/Hydro reservoir low on oil.
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Check for leaks and correct. Fill reservoir.
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Plugged oil filter.
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Change filter element.
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Exceeding relief valve pressure.
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Shift to lower gear.
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Hydro lever creeps toward neutral.
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Replace friction washers and/or springs as necessary.
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Drive systems unable to maintain charge pressure.
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(See your John Deere dealer).
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Picker not responding to hydro lever.
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Hydrostatic oil not properly warmed up.
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When operating in temperatures below -12°C (10°F), run-in picker 10-15 minutes to warm up hydrostatic drive oil.
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Operator presence system activated.
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Bring hydro lever to neutral and try again.
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Linkage loose or broken.
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Check and repair as needed.
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Plugged oil filter.
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Change filter element.
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Air in system.
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Tighten connections, hose clamps, and check for broken hydraulic lines.
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Hydraulic/Hydro reservoir low on oil.
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Check for oil leaks and correct. Refill reservoir.
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| Symptom |
Problem |
Solution |
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Lack of power or loss of power.
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Hydrostatic oil not properly warmed up.
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When operating in temperatures below -12°C (10°F), run-in picker 10-15 minutes to warm up hydrostatic drive oil.
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Hydraulic/Hydro reservoir low on oil.
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Check for leaks and correct.
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Plugged oil filter.
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Change filter element.
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Leaking or broken oil line or connection.
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Check and repair as necessary.
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Drive system unable to maintain or build up pressure.
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(See your John Deere dealer).
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Picker will not start in neutral or will start when hydro lever is in any operational position.
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Safety switches out of adjustment, faulty wiring or inoperative switch.
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Check wiring connections or (see your John Deere dealer).
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Transmission leaking oil from breather.
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Overfilled transmission.
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Drain excess oil.
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