Hydraulic System Troubleshooting

Oil leaks at multicoupler.

Coupler seal damaged due to connection with shut-off valve in locked position.

See your John Deere dealer.

Slow or jerky operation.

Cold hydraulic oil.

Run engine and cycle loader.

Use low viscosity hydraulic oil in cold weather. See your tractor Operator's Manual or your John Deere dealer.

 

Low hydraulic oil level.

See your tractor Operator's Manual.

 

Selective control valve output set low.

Increase to highest flow rate. See your tractor Operator's Manual.

 

Engine speed too slow.

Increase engine speed.

 

Internal cylinder leakage.

See your John Deere dealer. Have cylinders tested for internal leaks. If leaks are detected, have cylinder repair kit installed.

 

Faulty tractor hydraulic system.

See your tractor Operator's Manual or your John Deere dealer.

 

Faulty load sensing signal.

See your John Deere dealer.

 

"Flow checking" or faulty individual coupler.

Replace coupler. See your John Deere dealer.

 

Bucket or implement overloaded.

Reduce load. Check how lift capacity is determined in Specifications section.

 

Shut-off valve near multicoupler is partially closed.

Turn handle of shut-off valve counterclockwise to fully open.

 

Bad cable adjustment between selective control valve lever and selective control valve.

See your John Deere dealer.

Oil leaks.

Loose connections.

Loosen connection and check O-ring condition. Replace O-ring if necessary. Tighten connection.

 

External cylinder leakage.

See your John Deere dealer. Have fittings inspected for leaks. If leaks are detected, have O-ring and seals replaced.

 

External control valve leakage.

See your John Deere dealer.

Lack of lift capacity.

Incorrect lubrication of pivot points.

Lubricate pivot points.

 

Load is greater than loader lift capacity.

Reduce load. Check how lift capacity is determined in Specifications section.

Heavily loaded loader lowers when control is moved to raise position.

Internal lift cylinder leakage.

Test cylinders for internal leakage. Install cylinder repair kit. See your John Deere dealer.

Heavily loaded bucket or implement dumps when control is moved to roll back position.

Bad cable adjustment between joystick and loader control valve.

See your John Deere dealer.

 

Loader control valve not working properly.

Repair control valve. See your John Deere dealer.

Loader operation does not correspond with control lever movement.

Loader control valve not working properly.

Repair control valve. See your John Deere dealer.

 

Hydraulic hoses wrongly connected.

Correct the hose connections. See Identify Hose Connections: 2-Function Loader with Multicoupler or see Identify Hose Connections: 3-Function Loader with Multicoupler in Service section.

Loader settles from raised position.

Defective individual coupler.

Replace coupler. See your John Deere dealer.

 

Internal leak in control valve or cylinder.

Test for leaks. Install repair kit. See your John Deere dealer.

 

Internal leak in multicoupler.

Repair or replace multicoupler. See your John Deere dealer.

 

Bad cable adjustment between joystick and loader control valve.

See your John Deere dealer.

Loader stops to rise before full height is reached.

Carrier fully dumped.

Slightly roll back carrier until the loader rises.

 

Faulty lubrication of pivot points.

Lubricate pivot points.

 

Load too heavy.

Reduce load.

 

Faulty loader relief valve.

See your John Deere dealer.

 

Faulty tractor hydraulic system.

Check tractor hydraulic system.

Loader suspension system does not behave as expected.

Accumulator pressure needs to be checked.

See your John Deere dealer.

Loader suspension system does not engage.

Electrical connection failure.

See your John Deere dealer.

 

Blown fuse.

Replace fuse.

 

Loader suspension function is not declared in joystick.

See your John Deere dealer.

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