h7. M1089 LH 30K WINCH DOES NOT OPERATE
KNOWN INFO
REASON FOR QUESTION
1.
WARNING
Read WARNING
on following page.
YES
NO
TEST OPTIONS
Repair or replace M1089
linear directional control
valve (para 16-82)
Pressure Test or
STE/ICE-R Test #51
START
Is hydraulic pressure
between 2,950-3,050 PSI
(20,340-21,030 kPa) at
output of upper main valve
assembly?
If hydraulic pressure is not
between 2,950-3,050 PSI
(20,340-21,030 kPa), M1089
linear directional control valve
is faulty.
TM 9-2320-366-34-1
2-1008 Change 1
Materials/Parts (Cont)
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 LH FREE SPOOL
switch to OFF.
MAIN WINCH LH FREE SPOOL
switch OK.
MAIN WINCH LH FREE SPOOL
solenoid valve OK.
RH 30K winch operates.
Hydraulic tubes and fittings
OK.
LH and RH stifflegs OK.
POSSIBLE PROBLEMS
Faulty M1089 linear directional
control valve.
Faulty upper main valve
assembly.
Faulty LH 30K winch
assembly.
Faulty pressure relief valve
assembly.
