Diagnosing Hydraulic Functions

Symptom Problem Solution

Baler won't feed; Hay plugged at feed opening.

Bale density is too high.

Check relief valve. Replace if defective. (See your John Deere dealer.)

Gate opens while baling due to internal leakage in system component(s).

Repair or replace leaking component. (See your John Deere dealer.)

Bale sticks in chamber.

New baler.

Follow break-in instructions in Operating the Baler section.

Bale density too high.

Check relief valve. Replace if defective. (See your John Deere dealer.)

Damp crop or "gummy" buildup on sidesheets.

Clean sidesheets.

Excessive sidesheet friction.

Check straitness and straighten front sidesheets of baler if needed. (See your John Deere dealer.)

Bale density too low.

Faulty tension/gate cylinder.

Repair cylinder if leaking. (See your John Deere dealer.)

Faulty relief valve.

Check relief valve. Replace if defective. (See your John Deere dealer.)

Damaged O-rings and/or backup rings on relief or check valves.

Replace. (See your John Deere dealer.)

Damaged seat or poppet in relief or check valves.

Replace. (See your John Deere dealer.)

Foreign material keeping check or relief valve poppet from seating.

Clean or replace. (See your John Deere dealer.)

Dirty hydraulic oil in tractor.

Change tractor filter and/or oil.

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Symptom Problem Solution

Gate opens while baling.

Tension/gate cylinder extends when gate is closed and tractor selector control valve (SCV) is in neutral.

Air in hydraulic system. Open and close gate several times to remove air.

Faulty relief valve. Replace. (See your John Deere dealer.)

Tractor selector control valve (SCV) leaking.

Repair or replace. (See your John Deere dealer.)

Internal leak in baler hydraulic system.

Repair. (See your John Deere dealer.)

Gate will not close or closes erratically.

Obstruction between gate and frame.

Remove obstruction.

Crop buildup on belts.

Remove buildup. Operate PTO while closing gate.

One or both orifices (located near quick-disconnect end of hoses) not installed correctly.

Reverse direction of orifice(s).

Hydraulic flow of tractor too low.

Adjust tractor hydraulic flow. (See your tractor Operator's manual.)

Crop build-up on belts.

Remove buildup. Operate PTO while closing gate.

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