Komatsu 830E Shop Manual page 242

7. Verify feedback signals are present:
MFFB P1FB (P2FB) GFFB GFRFB
8. Release throttle. Propulsion contactors should drop out.
9. Move Selector Switch to REVERSE.
10. Verify that Reverser shifts to reverse position (to the left).
REVIN
a. Verify the feedback signal:
REVFB
11. Verify rear back-up lights and back-up horn are energized.
12. Depress throttle until AS contact is closed, and propulsion contactors MF, P1/(P2), GF, and
GFR are picked up.
AS MF P1 (P2) GF GFR
13. Verify feedback signals are present:
MFFB P1FB (P2FB) GFFB GFRFB
14. Release throttle. All contactors should drop out and will no longer be highlighted on the PTU
screen.
15. Move Selector Switch to NEUTRAL.
16. Verify that Reverser shifts to forward position (to the right) and back-up lights and horn are de-
energized.
1.4 Propulsion Lockout Test (DDEC & MTU Engine Trucks Only)
1. Move Selector Switch to FORWARD, turn Control Power Switch to On, and depress throttle
pedal until propulsion contactors MF, P1/(P2), GF, and GFR pick up.
AS MF P1 (P2) GF GFR
a. Verify feedback signals are present:
MFFB P1FB (P2FB) GFFB GFRFB
Detroit Diesel DDEC engine trucks:
2A. For 16 cylinder engines, jumper circuits 509M & 509S to ground, one at a time. For 20 cylin-
der engines (3 ECM's) jumper circuits 509M, 509R1 & 509R2 to ground. On DDEC III
engines, jumper circuit 509 to ground. The propulsion contactors should drop out after
approximately a 7 second time delay.
MTU engine trucks:
2B. Jumper circuit 31MS to ground. The propulsion contactors should drop out after approxi-
mately a 7 second time delay.
3. Turn control power Off. Remove jumpers to restore wiring to its original condition.
E3-12 Statex III Electrical Checkout Procedure 2/02 E03012