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 TM 9-2320-364-34-1
2-15. MATERIAL HANDLING CRANE TROUBLESHOOTING (CONT).
19. HOIST DOES NOT LOWER.
INITIAL SETUP
Tools and Special Tools
Materials/Parts - Continued
Tool Kit, General Mechanic's
Lockwasher (2) (Item 286, Appendix E)
(Item 240, Appendix F)
Packing, Preformed (Item 336, Appendix E)
Cap and Plug Set (Item 26, Appendix F)
Packing, Preformed (2) (Item 337, Appendix E)
Pan, Drain 4 gal (Item 144, Appendix F)
Packing, Preformed (2) (Item 343, Appendix E)
Pressure Test Kit (Item 165, Appendix F)
Packing, Preformed (2) (Item 345, Appendix E)
Wrench, Torque (0-175 lb-ft)
Packing, Preformed (2) (Item 348, Appendix E)
(Item 277, Appendix F)
Packing, Preformed (Item 383, Appendix E)
Lifting Device (Minimum Capacity
References
200 lbs/91 kg)
TM 9-2320-364-10
TM 9-2320-364-20
Materials/Parts
Equipment Condition
Oil, Hydraulic (Item 34, Appendix B)
Engine OFF, (TM 9-2320-364-10)
Sealing Compound (Item 53, Appendix B)
Parking brake applied, (TM 9-2320-364-10)
Tags, Identification (Item 72, Appendix B)
Outriggers down with weight off
Gasket (Item 106, Appendix E)
vehicle suspension, (TM 9-2320-364-10)
Kit, Repair (Item 153, Appendix E)
Wheels chocked, (TM 9-2320-364-10)
Lockwasher (4) (Item 282, Appendix E)
START
1.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING
Unit Troubleshooting
Flowmeter test.
on Page 2-651
tasks completed.
Hoist raises.
REASON FOR QUESTION
Are at least 10 gpm
POSSIBLE PROBLEMS
If HOIST valve on four valve
(38 lpm) measured from
bank is faulty, pressure and flow
Four valve bank faulty.
to hoist assembly will be
HOIST valve with valve
Hoist brake faulty.
restricted.
isolated from hoist motor and
Hoist motor valve faulty.
in DOWN position?
Repair four valve
bank (Para 16-26).
NO
Verify repair, go to
Step 5 of this Fault.
YES
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