MD Helicopters 369D - Page 188

CSP-HMI-3 MD Helicopters, Inc.
MAINTENANCE MANUAL
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Table 108. Analog Indicator (Torque, TOT) Troubleshooting (Cont.)
Symptom Corrective ActionProbable Trouble
TOT
Indicator inoperative
Defective indicator Remove and replace indicator.
Loose wiring, disconnected
connector or defective ground
terminal
Check continuity through wiring and
connector. Repair as necessary.
Defective wiring Repair as necessary.
Defective thermocouple Replace thermocouple.
Incorrect reading Defective indicator Remove and replace indicator.
10. Quad Digital Indicator (Torque, TOT, OAT, N
1
)
Table 109. Quad Digital Indicator (Torque, TOT, OAT, N
1
) Troubleshooting
Symptom Probable Trouble Corrective Action
Torque
Indicator inoperative
Defective oil pressure transducer Replace transducer
Instrument circuit breaker CB101
open
Reset circuit breaker CB101.
Loose wiring, disconnected
connector or defective ground
terminal
Check continuity through wiring and
connector. Repair as necessary.
Incorrect reading Defective indicator Remove and replace indicator.
TOT
Indicator inoperative
Defective indicator Remove and replace indicator.
Loose wiring, disconnected
connector or defective ground
terminal
Check continuity through wiring and
connector. Repair as necessary.
Defective wiring Repair as necessary.
Defective thermocouple Replace thermocouple.
Incorrect reading Defective indicator Remove and replace indicator.
OAT
Indicator inoperative
Defective indicator Remove and replace indicator.
Loose wiring, disconnected
connector or defective ground
terminal
Check continuity through wiring and
connector. Repair as necessary.
Open circuit in OAT probe Remove and replace OAT probe.