TM 9-2320-366-34-1
2-1048
KNOWN INFO
REASON FOR QUESTION
Faulty control valve will
cause boom to not swing.
1.
YES
START
NO
TEST OPTIONS
Control Valve Flow Test
POSSIBLE PROBLEMS
Is flow and pressure OK
through control valve?
WARNING
Read WARNING
on following page.
Replace cross relief valve
(para 16-54) or hydraulic
orbit motor (para 16-55).
j5. M1089 MATERIAL HANDLING CRANE (MHC) BOOM SWING ASSEMBLY DOES NOT WORK
Repair eight bank valve
assembly (para 16-59).
INITIAL SETUP
Equipment Conditions
Engine shut down (TM 9-2320-366-10-1).
Personnel Required
(2)
Tools and Special Tools
Tool Kit, Genl Mech (Item 78, Appendix B)
Tester, Hydraulic (Item 73, Appendix B)
Pan, Drain (Item 43, Appendix B)
Goggles, Industrial (Item 28, Appendix B)
Hydraulic oil level OK.
Hydraulic hoses, tubes,
and fittings OK.
Hydraulic pump OK.
Monoblock valve OK.
Faulty control valve.
Faulty cross relief valve .
Faulty hydraulic orbit motor.
Materials/Parts
Rag, Wiping (Item 60, Appendix C)
Hose (2) (Item 40, Appendix C)
Fitting (2) (Item 31, Appendix C)
Reducer, Tube (Item 61, Appendix C)
Adapter, Swivel (Item 3, Appendix C)
Adapter, Pipe (Item 2, Appendix C)
Adapter, Pipe (Item 1, Appendix C)
