TM 55-1510-219-MTF
TROUBLESHOOTING GUIDE E - POWER PLANT
CONDITION
PROBABLE CAUSE
E1.
Idle speed is incorrect.
a.
Incorrect control linkage assembly.
b.
Propeller governor malfunction.
c.
Fuel control unit pneumatic system not operating
properly.
d.
Idle speed setting on fuel control unit incorrect.
e.
Fuel control unit malfunction.
E2.
Rapid acceleration of one engine over the other.
a.
Px metering orifice not on fuel control unit elbow.
b.
Fuel control unit acceleration dome out of adjustment.
c.
Compressor bleed valve not operating.
d.
Fuel control unit failure.
e.
Engine rigging, components, or engine are mismatched.
E3.
Power levers are not aligned.
a.
Fuel control rod improperly adjusted.
E4.
High engine oil pressure.
a.
Defective oil pressure indicating system.
b.
Defective pressure relief valve.
E5.
Low engine oil pressure.
a.
Insufficient oil.
b.
Defective oil pressure indicating system.
c.
Dirty oil filter.
3-18
