John Deere 450DLC — Operational Checks—Key Switch On, Engine On Checks

TM2361 (24JUN08) 9005-10-10 450DLC Excavator Operation and Tests 062608 PN=226 Operational Checkout Procedure Pilot Shutoff Circuit YES: See Pilot Shutoff Check Switch Harness Check. (Group 9015-20.) YES: Check wiring. See Pilot Shutoff Switch Harness (W11) Wiring Diagram (Group 9015-10.) and see Cab TX1000874 –UN–01DEC05 TX1000749 –UN–29NOV05 Harness (W1) Wiring Diagram. (Group 1—Engine Speed Dial 9015-10.) 9005 10 CAUTION: Machine may move during this check. Make sure area is clear YES: See Diagnose Pilot 10 and large enough to operate all machine functions. Circuit Malfunctions (Group 9025-15.) and see Turn engine speed dial (1) to L (slow idle) position.

Pilot Shutoff Circuit Theory of Operation. Place pilot shutoff lever in LOCKED (rearward) position. (Group 9015-15.) Slowly actuate dig and travel functions. NO: Continue check. LOOK: Do dig and travel functions operate? Place pilot shutoff lever in UNLOCKED (forward) YES: Go to next check. position. NO: Check wiring. See Slowly actuate dig and travel functions. Pilot Shutoff Switch Harness (W11) Wiring LOOK: Do dig and travel functions operate? Diagram (Group 9015-10.) and see Cab Harness (W1) Wiring Diagram. (Group TX1000747 –UN–29NOV05 9015-10.) or see Diagnose Pilot Circuit Malfunctions (Group 9025-15.) and see Pilot Shutoff Circuit Theory of Operation.

(Group 9015-15.) and – – –1/1 Operational Checkout Procedure Pilot Shutoff Circuit Check TX1000874 –UN–01DEC05 TX1000749 –UN–29NOV05 1—Engine Speed Dial CAUTION: Machine may move during this check. Make sure area is clear and large enough to operate all machine functions. Turn engine speed dial (1) to L (slow idle) position. Place pilot shutoff lever in LOCKED (rearward) position. Slowly actuate dig and travel functions. LOOK: Do dig and travel functions operate? YES: See Pilot Shutoff Switch Harness Check. (Group 9015-20.) YES: Check wiring. See Pilot Shutoff Switch Harness (W11) Wiring Diagram (Group 9015-10.) and see Cab Harness (W1) Wiring Diagram. (Group 9015-10.) YES:

See Diagnose Pilot Circuit Malfunctions (Group 9025-15.) and see Pilot Shutoff Circuit Theory of Operation. (Group 9015-15.) NO: Continue check. 9005 10 10 Place pilot shutoff lever in UNLOCKED (forward) position. Slowly actuate dig and travel functions. LOOK: Do dig and travel functions operate? TX1000747 –UN–29NOV05 YES: Go to next check. NO: Check wiring. See Pilot Shutoff Switch Harness (W11) Wiring Diagram (Group 9015-10.) and see Cab Harness (W1) Wiring Diagram. (Group 9015-10.) or see Diagnose Pilot Circuit Malfunctions (Group 9025-15.) and see Pilot Shutoff Circuit Theory of Operation. (Group 9015-15.) and – – –1/1