KNOWN INFO
REASON FOR QUESTION
1.
WARNING
Read WARNING
on following page.
YES
NO
TEST OPTIONS
Pressure Test or
STE/ICE-R Test #51
START
h6. M1089 RH 30K WINCH DOES NOT OPERATE
Repair or replace lower main
valve assembly (para 16-84).
Is hydraulic pressure
between 2,950-3,050 PSI
(20,340-21,030 kPa) at
output of lower main valve
assembly?
If hydraulic pressure is not
between 2,950-3,050 PSI
(20,340-21,030 kPa), lower
main valve is faulty.
TM 9-2320-366-34-1
2-1006 Change 1
Materials/Parts
Rag, Wiping (Item 60, Appendix C)
Cap, Tube (Item 17.2, Appendix C)
Hose Assembly, Nonmetallic (Item 40.1, Appendix C)
Plug, Tube Fitting, Threaded (Item 55.1, Appendix C)
Tee, Tube (Item 88.1, Appendix C)
Dispenser, Pressure Sensitive Adhesive Tape
(Item 30, Appendix C)
References
TM 9-4910-571-12&P
Personnel Required
(2)
INITIAL SETUP
Equipment Conditions
Engine shut down (TM 9-2320-366-10-1).
Control panel assembly covers, removed
(TM 9-2320-366-20-5).
Tools and Special Tools
Tool Kit, Genl Mech (Item 78, Appendix B)
STE/ICE-R (Item 70, Appendix B)
Transmitter, Pressure (Item 1, Appendix G)
Pan, Drain (Item 43, Appendix B)
Goggles, Industrial (Item 28, Appendix B)
Hydraulic tank oil level OK.
MAIN WINCH RH FREE SPOOL
switch to OFF.
MAIN WINCH RH FREE SPOOL
switch OK.
MAIN WINCH RH FREE SPOOL
solenoid valve OK.
LH 30K winch operates.
Hydraulic tubes and fittings
OK.
LH and RH stifflegs OK.
POSSIBLE PROBLEMS
Faulty lower main valve
assembly.
Faulty RH 30K winch
assembly.
Faulty 30K winch relief valve.
