Lycoming IO-390-D Series Maintenance Manual page 52

100-Hour or Annual Engine Inspection Checklist for IO-390-D Series Engines (Cont.)
Inspection Item
Fuel System (Cont.)
Examine solder joints at the end
of fuel lines for cracks.
Examine the flexible fuel lines.
Examine gaskets, and seals for
deterioration or leakage.
Crankcase
Complete the crankcase
inspection.
Engine Accessories
Complete the accessory drive
inspection.
Engine Mounts
Complete the engine mount
inspection.
* Refer to the "Fuel Line Replacement" procedure in Chapter 73-10.
Cylinders
Complete the "Visual Cylinder Inspection" procedure in Chapter 72-30. Record the results for each
cylinder.
Cylinder 1
Cylinder 2
Cylinder 3
Cylinder 4
05-20
Page 26
IO-390-D Series Engine Maintenance Manual
IO-390-D Series Engine Maintenance Manual
Comments
Replace cracked fuel lines.*
Replace any lines that have
become hard.*
Replace any gaskets, or seals
that are worn, damaged, or
leaking.
Refer to the "Crankcase
Inspection Before
disassembly" procedure in
Chapter 72-20.
Refer to the "Accessory Drive
Inspection" procedure in
Chapter 72-60.
Refer to the "Engine Mount
Inspection" procedure in
Chapter 72-00.
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Results/Notes
March 2020
Done