TM 1-1520-238-T-5
7–103
7–26.
PILOT UTIL HYD PSI INDICATOR – IS LIGHTED
7–26
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer (2)
References:
TM 1-1520-238-23
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Hydraulic system
leak check –
completed
WARNING
Turn off power before detaching or
attaching wires and connectors. High
current 28 VDC or 115 VAC is present.
Failure to do so could result in death or
serious injury.
1. Detach P18.
Is UTIL HYD PSI indicator lighted?
YES
Replace pilot caution/warning
panel (TM 1-1520-238-23).
NO
Go to step 2.
2. Detach P19 and P238. Check for short
between:
P18–72 and ground,
P18–122 and ground.
Does short exist?
YES
Repair shorted wire between:
P18–122 and P19–72,
P18–72 and J436–A6,
P436–A6 and P238–16.
Go to paragraph 7–21.
NO
Go to step 3.
3. Remove utility hydraulic manifold low pressure
switch (TM 1-1520-238-23). Check for short
between (HP2)J1–16 and ground.
Does short exist?
YES
Replace utility hydraulic
manifold (TM 1-1520-238-23).
NO
Replace utility hydraulic
manifold low pressure switch
(TM 1-1520-238-23).
END OF TASK
