OUTRIGGERS DO NOT OPERATE OR OPERATE SLOWLY.

TM 9-2320-364-34-1

2-15. MATERIAL HANDLING CRANE TROUBLESHOOTING (CONT).

1. OUTRIGGERS DO NOT OPERATE OR OPERATE SLOWLY.

INITIAL SETUP

Tools and Special Tools

References

Tool Kit, General Mechanic's

TM 9-2320-364-10

(Item 240, Appendix F)

TM 9-2320-364-20

Pan, Drain 4 gal (Item 144, Appendix F)

Equipment Condition

Pan, Drain 6 gal (Item 145, Appendix F)

Engine OFF, (TM 9-2320-364-10)

Pressure Test Kit (Item 165, Appendix F)

Parking brake applied, (TM 9-2320-364-10)

Wrench, Combination, 1-1/2 in.

Wheels chocked, (TM 9-2320-364-10)

(Item 260, Appendix F)

Materials/Parts

Oil, Hydraulic (Item 34, Appendix B)

Wire, Nonelectrical (Item 79, Appendix B)

Lockwashers (4) (Item 282, Appendix E)

Packing, Preformed (2) (Item 337, Appendix E)

Packing, Preformed (2) (Item 389, Appendix E)

Packing, Preformed (2) (Item 391, Appendix E)

START

KNOWN INFO

TEST OPTIONS

Unit Troubleshooting

Operation test.

Do outriggers operate using

tasks completed.

O\R JACK control levers on

Winch and Load Handling

REASON FOR QUESTION

LH side of truck?

System (LHS) operate.

If check valve in center manifold

of four valve bank is faulty,

POSSIBLE PROBLEMS

outriggers can be operated from

one side of truck but not the

Four valve bank faulty.

other.

Solenoid valve assembly faulty.

Main hydraulic pressure valve

faulty.

Multifunction manifold faulty.

Relief valve faulty.

Go to Step 2 of this

Fault.

YES

Repair four valve bank

(Para 16-26).

Verify repair, go to

Step 8 of this Fault.

2-428