26
Please Give Part No., Description
& Unit Serial No.
307074-D
Page Rev. A
L4000G4
NEW LEADER
HEADER
TROUBLESHOOTING
• Symptom: Spinner motors do not turn when spinner control valve is in running position. See reasons 1, 2, 3,
4, 5, 7, 8 & 9.
• Symptom: Spinners turn but conveyor does not run in manual mode. See reasons 6, 8, 9, 10 & 22.
• Symptom: Console in operation mode, but the conveyor does not move when the machine moves. See
reasons 6, 8, 9, 10 & 22.
• Symptom: Spinner speed does not stay constant. See reasons 4, 5, 11, 12 & 13.
• Symptom: Spinners run with cab control in “Off” position. See reason 14.
• Symptom: Hydraulic oil overheats (200° F (93.33° C) or hotter). See reasons 1, 4, 6, 15, 16, 17 & 18.
• Symptom: Light flashes and buzzer sounds intermittently. Conveyor runs in jerks. See reasons 19 & 22.
• Symptom: Conveyor does not run with cab control “On”, PTO engaged and vehicle driving forward. See
reasons 20 & 22.
• Symptom: Conveyor runs when control switch in cab is in “Off” position. See reasons 15 & 21.
• Symptom: Conveyor starts to run when PTO is engaged. See reasons 15, 20, 21 & 22.
• Symptom: Controller application or programming. Refer to the control manual’s Troubleshooting section.
• Symptom: Undesirable spread pattern. See G4 spread pattern section at the back of this manual.
Reason:
Correction:
1.
Hydraulic oil level low.
Add hydraulic oil to reservoir to maintain level around mid-
point of sight gauge.
2.
Shut Off valve on oil reservoir not open.
Open valve fully by turning counter clockwise until it stops.
3.
Hydraulic Pump is not rotating.
1.
PTO is disengaged. Shift into engagement.
2.
Drive line has failed. Repair or replace.
3.
Key in pump shaft has failed. Replace key.
4.
U-joint pin or key has failed. Replace pin or key.
4.
In line relief valve set too low.
In line relief valve pressure should be 3100 PSI (213.7 bar) . If
unit is not equipped with a pressure gauge, install one at main
relief valve. Disconnect pressure line from main relief valve
and reconnect to flow meter and load valve. Open load valve
fully and run truck engine at field operating speed with pump
engaged. Slowly close load valve until pressure reaches 3100
PSI (213.7 bar). If this pressure cannot be reached, adjust
relief valve until gauge reads 3100 PSI (213.7 bar).
CAUTION: Do not set pressure above 3100 PSI (213.7 bar).
5.
Worn pump.
With flow meter arranged to check relief valve setting above,
open load valve fully. Read flow rate with truck engine running
at field operating speed. Close load valve until pressure reads
2000 PSI (137.9 bar). Flow rate should not decrease more than
ten percent. If flow loss is greater, replace pump.
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