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TM 1-1510-223-MTF
D4.
Dim control does not function properly.
a.
Defective rheostat switch.
b.
Defective annunciator control module.
TROUBLESHOOTING GUIDE E - POWER PLANT
CONDITION
PROBABLE CAUSE
E1.
LOW IDLE speed is either high or low.
LOW IDLE speed improperly adjusted.
E2.
HIGH IDLE speed is either high or low.
HIGH IDLE speed improperly adjusted.
E3.
Low or high torque is observed during torque check.
Barrel adjustable stop is improperly adjusted.
E4.
Reverse adjusting screw is improperly adjusted.
E5.
Newly rigged engine accelerates faster or slower than
opposite engine.
Engine rigging, components, or engine is mismatched.
E6.
POWER levers are not aligned.
Fuel control rod improperly adjusted.
E7.
High engine oil pressure.
a.
Defective oil pressure indicating system.
b.
Defective pressure relief valve.
E8.
Low engine oil pressure.
a.
Insufficient oil.
b.
Defective oil pressure indicating system.
c.
Dirty oil filter
d.
Leak in oil lines or oil cooler.
3-16
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