TM 1-1520-238-T-7
11–262
11–43. RTR BRK CIRCUIT BREAKER – DOES NOT STAY CLOSED WITH RTR BK
7–33
SWITCH SET TO BRAKE AND POWER LEVERS SET TO OFF
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
References:
TM 1-1520-238-T-5
TM 1-1520-238-23
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. Open RTR BRK circuit breaker (CB37). Check
for short between (A402)J24–A16 and ground.
Does short exist?
YES
Go to step 5.
NO
Go to step 2.
2. Detach P170, P173 and P436. Check for short
between P441–A16 and ground.
Does short exist?
YES
Repair shorted wire between:
P441–A16 and P173 SP1,
P173 SP1 and P173–b,
P173 SP1 and J914–B8,
P914–B8 and J436–A15,
P173 SP1 and P170–A7.
Go to paragraph 11–23.
NO
Go to step 3.
3. Check for short between P436–A15 and ground.
Does short exist?
YES
Refer to TM 1-1520-238-T-5 to
troubleshoot hydraulic and
pneumatic system.
NO
Go to step 4.
4. Check for short between (A137)J1–A2 and
ground.
Does short exist?
YES
Replace pilot ASE panel
(TM 1-1520-238-23).
NO
Go to step 6.
5. Detach P990 and P986. Check for short
between (A402)J24–A16 and ground.
Does short exist?
YES
Repair shorted wire between:
P990–W and P431–A4,
P986–W and P431–A18.
(A402):
J27–A18 and TB2–29–D,
J24–A14 and TB2–29–B,
J27–A4 and TB2–29–C.
Go to paragraph 11–23.
NO
Go to paragraph 11–88.
6. Attach P173. Check for short between P170–A7
and ground.
Does short exist?
YES
Replace pilot power quadrant
(TM 1-1520-238-23).
NO
Go to step 7.
7. Detach P686. Check for short between
P170–A2 and ground.
Does short exist?
YES
Repair shorted wire between:
P170–A2 and J447–A6,
P447–A6 and P686–114.
Go to paragraph 11–23.
NO
(ACA) Replace DASEC
(TM 1-1520-238-23).
(ACB) Go to step 8.
