KNOWN INFO
REASON FOR QUESTION
YES
NO
TEST OPTIONS
2.
Pressure Test or
STE/ICE-R Test #51
POSSIBLE PROBLEMS
h6. M1089 RH 30K WINCH DOES NOT OPERATE (CONT)
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.
M1089 linear directional
control valve OK.
Faulty lower main valve
assembly.
Faulty RH 30K winch
assembly.
Faulty pressure relief valve
assembly.
Repair or replace lower main
valve assembly (para 16-84).
Is pressure between
2,950-3,050 PSI
(20,340-21,030 kPa) at
output of lower main valve
assembly?
If pressure is not between
2,950-3,050 PSI
(20,340-21,030 kPa), lower
main valve assembly is faulty.
TM 9-2320-366-34-1
2-1006.2 Change 1