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Slow or Jerky Operation
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Cold hydraulic oil.
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Run engine and cycle loader.
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Use low viscosity hydraulic oil in cold weather. See your tractor operator's manual or your John Deere dealer.
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Low hydraulic oil.
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See tractor operator's manual.
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Poppet style selective control valve set slow.
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Increase to fastest rate. See your tractor operator's manual.
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Engine speed too slow.
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Increase engine speed.
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Internal cylinder leakage.
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Test cylinders for internal leaks. Install cylinder repair kit. See your John Deere dealer.
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Faulty tractor hydraulic system.
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See your tractor operator's manual or your John Deere dealer.
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"Flow checking" or faulty quick-connect coupler.
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Replace coupler. See your John Deere dealer.
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Overloading bucket or fork.
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Reduce load. See how lift capacity is determined in Specifications section.
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Incorrect control cable adjustment on loader operated with independent control valve.
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See Install Control Cable in Service section for adjustments or see your John Deere dealer.
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Oil Leaks
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Loose connections.
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Tighten fittings.
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External cylinder leakage.
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Install cylinder repair kit. See your John Deere dealer.
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External loader control valve leakage.
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Install repair kit. See your John Deere dealer.
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Lack of Lift Capacity
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Load is greater than loader lift capacity.
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See how lift capacity is determined in Specifications section.
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Internal lift cylinder leakage.
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Test cylinders for internal leaks. Install cylinder repair kit. See your John Deere dealer.
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| Symptom |
Problem |
Solution |
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Heavily Loaded Loader Lowers When Control Is Moved to Raise Position.
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Lift check in control valve not working properly.
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Repair control valve. See your John Deere dealer.
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Heavily Loaded Bucket or Attachment Dumps When Control Is Moved to Roll-Back Position
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Lift check in control valve not working properly.
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Repair control valve. See your John Deere dealer.
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Loader Operation Does Not Correspond With Control Lever Movement
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Hydraulic hoses connected wrong.
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Correct hoses connections. See Identifying Hose Connections in Service section.
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Defective quick-connect coupler.
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Replace coupler. See your John Deere dealer.
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Loader Settles from Raised Position
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Internal leak in control valve or cylinder.
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Test for leaks. Install repair parts. See your John Deere dealer.
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