FAN, LHS, WINCH AND CRANE DO NOT OPERATE OR OPERATE SLOWLY.

TM 9-2320-364-34-1

2-13. HYDRAULIC SYSTEM TROUBLESHOOTING (CONT).

2. FAN, LHS, WINCH AND CRANE DO NOT OPERATE OR OPERATE SLOWLY.

INITIAL SETUP

Tools and Special Tools

References

Tool Kit, General Mechanic's

TM 9-2320-364-10

TM 9-2320-364-20

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

Pressure Test Kit (Item 165, Appendix F)

Equipment Condition

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

Materials/Parts

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

Oil, Hydraulic (Item 34, Appendix B)

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

START

KNOWN INFO

TEST OPTIONS

Does pump make excessive

Unit Troubleshooting

Audible inspection.

noise when operating?

tasks completed.

REASON FOR QUESTION

POSSIBLE PROBLEMS

If main hydraulic pump makes

excessive noise during

Main hydraulic pump faulty.

operation, internal components

Hydraulic pump control faulty.

are faulty and pump will not

supply fluid for correct hydraulic

system operation.

Go to Step 2 of this

Fault.

YES

Replace hydraulic

pump (Para 17-2).

Verify repair, go to

Step 3 of this Fault.