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IO-390-D Series Engine Maintenance Manual
IO-390-D Series Engine Maintenance Manual
Engine Assembly Checklist for IO-390-D Series Engines (Cont.)
Install counterweights on the crankshaft per the
"Counterweight Installation" procedure in Chapter
72-20.
Start with a clean crankcase which passed the
"Crankcase Inspection Before Disassembly" and
"Crankcase Dimensional Inspection" in Chapter 72-
20.
Complete the "Piston Cooling Nozzle Installation"
procedure in Chapter 72-20.
Complete the "Crankshaft Idler Gear Shaft
Installation" procedure in Chapter 72-20.
Install the oil plugs (if removed) per the "Oil Plug
Installation" procedure in Chapter 72-20.
Complete the "Oil Pressure Relief Valve
Installation" procedure in Chapter 72-50.
Complete the "Tappet Assembly Installation"
procedure on Chapter 72-20.
Identify the types of tappets installed in the engine
logbook.
Complete the "Crankshaft Bearing and O-Ring
Installation" procedure in Chapter 72-20.
Complete the "Propeller Governor Drive
Installation" procedure in Chapter 72-20.
NOTICE
If a new or reconditioned camshaft is to be installed, install new tappet bodies. Refer
to the "Camshaft Replacement Guidelines" section in the latest revision of Service
Instruction No. SI-1011 for guidelines on replacing the camshaft when new tappets
are installed in the engine.
Complete the "Camshaft Inspection" in Chapter 72-
20.
Complete the "Camshaft Assembly and
Installation" procedure in Chapter 72-20.
Measure the camshaft end play in the left crankcase
half per the "Camshaft Installation" procedure in
Chapter 72-20.
Measure the camshaft end play in the right
crankcase half per the "Camshaft Installation"
procedure in Chapter 72-20.
Measure the crankshaft bearing journals. Refer to
the "Crankshaft Bearing Surface Inspection"
section in Chapter 72-20.
* Measurements must be within tolerances specified in the latest revision of the Service Table of
Limits - SSP-1776.
© 2020 Avco Corporation. All Rights Reserved
March 2020
Item
Comments
*Measurement:
*Measurement:
*Measurement:
Done
72-10
Page 123
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