TM 1-1510-225-MTF
D3.
D4.
Depressing the press-to-test switch has no effect
on fault warning system operation.
a. Defective switch.
b. Defective circuit breaker.
c. Defective wiring.
Dim control does not function properly.
a. Defective rheostat switch.
b. Defective annunciator control module.
TROUBLESHOOTING GUIDE E - POWERPLANT
CONDITION
E1.
E2.
E3.
E4.
E5.
E6.
E7.
PROBABLE CAUSE
LOW IDLE speed is either high or low.
a. LOW IDLE speed improperly adjusted.
HIGH IDLE speed is either high or low.
a. HIGH IDLE speed improperly adjusted.
Low or high torque is observed during torque
check.
a. Barrel adjustable stop is improperly adjusted.
Reverse torque, N1, and propeller RPM is too
high or low.
a. Reverse adjusting screw is improperly adjusted.
Newly rigged engine accelerates faster or slower
than opposite engine.
a. Engine rigging, components, or engine is mis-
matched
POWER levers are not aligned.
a. Fuel control rod improperly adjusted.
High engine oil pressure.
a. Defective oil pressure indicating system.
b. Defective pressure relief valve.
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