
9-20
SECTION 9 –
MISCELLANEOUS
Lifting mechanism will not lift
• Bad cylinder
• Blown relief valve
• Relief valve set too low
• Lift arms seized
• Faulty electro-hydraulic valve
• Check cylinder - remove,
rebuild, or replace
• Replace valve
• Reset to 2000 PSI (137.9 bar)
• Loosen mounting bolts,
lubricate grease fittings (if
equipped)
• Refer to the Tasseltrol user
guide
Cutter head blades, quad
pullers, rollers, or ties will not
turn
• Oil level in hydraulic reservoir
too low
• Oil not reaching pump
• Faulty hydraulic pump
• Faulty hydraulic motor(s)
• Fill hydraulic reservoir to
proper level with approved oil
• Remove suction hose from
pump and check for proper
flow. Reinstall hose and all
suction fittings.
• Replace hydraulic pump
• Replace motor(s)
Hydraulic motor leaking
• Seal failure
• Restricted case drain hose
• Replace seal, turn heads on
with low engine RPM
• Inspect or replace hose
No units will lift
• Oil in hydraulic reservoir low
• Faulty valve
• Relief valve in electro-
hydraulic valve set too low
• Fill hydraulic reservoir to
proper level with approved oil
• Repair or replace valve
• Contact your local John Deere
dealer for assistance
No units will lower
• All lift arm pivots too tight
• Lubricate and loosen pivot
points
Only one unit will not lower
• Faulty valve
• Lift arm pivot too tight
• Replace valve
• Lubricate and loosen pivot
point
All units lift slowly
• Hydraulic oil not at operating
temperature
• Faulty valve
• Lift arm pivots too tight
• Plugged high pressure filter
• Relief valve in electro-
hydraulic valve system set too
low
• Allow time for oil to warm up
• Replace valve
• Lubricate and loosen pivot
points
• Remove, clean, or replace
• Contact your local John Deere
dealer for assistance
Only one unit lifts slowly
• Faulty valve
• Lift arm pivot points too tight
• Replace valve
• Lubricate/loosen pivot point
Only one unit will not hold
position
• Oil leak between valve and
cylinder
• Faulty valve
• Faulty lower poppet on lift
valve
• Repair leak or replace hose
• Replace valve
• Remove, clean, or replace
No units will hold position
• Problem is not hydraulic
• Refer to “Tasseltrol/LS System
12” provided elsewhere in this
manual
Содержание 204SP
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