h1. M1089 FOLD CYLINDER DOES NOT WORK
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)
Materials/Parts
Rag, Wiping (Item 60, Appendix C)
Hose (2) (Item 40, Appendix C)
Fitting (2) (Item 31, Appendix C)
Adapter, Pipe (2) (Item 2, Appendix C)
Adapter, Swivel (2) (Item 3, Appendix C)
Fitting (2) (Item 32, Appendix C)
START
WARNING
Read WARNING
on following page.
Are flow and pressure OK
for fold down operation?
1.
YES
NO
Replace fold cylinder (para 16-71).
Repair lower valve assembly (para 16-84).
TM 9-2320-366-34-1
TEST OPTIONS
Cylinder Down Input Flow Test
REASON FOR QUESTION
Faulty fold cylinder control
valve will not provide proper
pressure and flow to fold
cylinder DOWN function.
KNOWN INFO
Hydraulic oil level OK.
Hydraulic hoses, tubes, and
fittings OK.
PTO OK.
Right 30K winch assembly
OK.
Telescopic lift cylinders OK.
Stinger cylinder OK.
POSSIBLE PROBLEMS
Faulty lower valve assembly.
Faulty fold cylinder.
2-988
