CSP-HMI-3MD Helicopters, Inc.
MAINTENANCE MANUAL
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Revision 13
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7. Analog/Digital Torque Indicator Troubleshooting
Table 106. Analog/Digital Torque Indicator Troubleshooting
Symptom Probable Trouble Corrective Action
Indicator inoperative
Defective oil pressure transducer Replace transducer (Ref. Engine
Torque and/or Oil Pressure
Transducer Replacement).
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.
8. Engine Oil Temperature − Oil Pressure Indicator Troubleshooting
Table 107. Oil Press, Oil Temp Indicator Troubleshooting
Symptom Probable Trouble Corrective Action
Pressure indicator fails to operate.
No readings or intermittent
readings
Defective indicator Remove and replace indicator.
Loose wiring, disconnected
connector or defective ground
terminal
Check continuity through wiring and
connector. Repair as necessary.
No out put from oil pressure
transducer
Defective transducer Remove and replace transducer.
Oil temperature fails to operated.
No reading or intermittent reading
Open circuit in oil temperature bulb Remove and replace oil temperature
bulb.
Defective wiring Repair as necessary.
9. Analog Indicator (Torque, TOT)
Table 108. Analog Indicator (Torque, TOT) 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.
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