TM 1-1520-238-T-4
Change 5
6–82.23
6–22.3. HOD DISPLAY – READS –32 C FOR ALL GEARBOXES
6–22.3
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
One person to assist
References:
TM 1-1520-238-23
TM 1-1520-238-T-6
TM 55-1500-323-24
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Access provisions –
L200 and R200 access
panels and electrical
power distribution panel
(A402) open.
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 P61. Check for short between:
P61–F and ground.
Does short exist?
YES
Go to step 4.
NO
Reconnect P61. Go to step 2.
2. Detach P60. Check for short between:
P60–F and ground.
Does short exist?
YES
Go to step 4.
NO
Reconnect P60. Go to step 3.
3. Detach P755. Check for short between:
J755–2 and ground,
J755–3 and ground.
Does short exist?
YES
Go to step 4.
NO
Reconnect P755. Go to step 5.
4. Locate short in wire harness.
Can wire harness be repaired?
YES
Repair shorted wire between:
P61–F and ground,
P60–F and ground,
P755–2 and ground,
P755–3 and ground
(TM 55-1500-323-24).
Go to step 6–13.
NO
Replace the shorted
temperature transducer (MT13,
MT14, MT15, or MT16)
(TM 1-1520-238-23).
Go to paragraph 6–13.
5. Open ENG START circuit breaker (CB58).
Gain access to Electrical Power Distribution Box
(A402). Depin wires, one at a time, and check
for short between:
TB2–8 Pin T and ground (NGB 1),
TB2–8 Pin W and ground (XMN 1),
TB2–8 Pin K and ground (XMN 2),
TB2–8 Pin P and ground (NGB 2),
TB2–8 Pin A and ground (CB58).
Does short exist?
YES
Repair shorted wire
(TM 55-1500-323-24).
Go to paragraph 6–13.
NO
Go to step 6.
