OMFH313135

Diagnose Hydraulic Functions

Symptom

Problem

Solution

Baler will not feed; Hay plugged at feed opening.

Bale density is too high.

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

Adjust variable (soft) core valve (if equipped). (See OPERATE VARIABLE CORE [IF EQUIPPED] in Operating the Baler section.) If not equipped, install variable (soft) core option. (See Attachments section.)

Gate opens while baling due to internal leakage in system components.

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 buildup on sidesheets.	Clean sidesheets.
	Excessive sidesheet friction.	Check straightness, and straighten front sidesheets of baler. (See your John Deere dealer.)

Bale density too low.	Faulty tension or 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 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 oil.
	Belts stretched too long.	Measure belts and replace or shorten if belts are longer than maximum listed. (See REPAIR BELTS in Service—Baler section.)

Gate opens while baling.	Tension or 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.)
	Tension arm twisted from baling with gate lock lever in LOCKED position.	Replace tension arm. (See your John Deere Dealer.) (See CHECK GATE LOCK VALVE INTERLOCK LEVER ADJUSTMENT in Preparing Baler section.)

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 orifices.
	Hydraulic flow of tractor too low.	Adjust tractor hydraulic flow. (See your tractor operator's manual.)
	Crop buildup on belts.	Remove buildup. Operate PTO while closing gate.

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