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IO-390-D Series Engine Maintenance Manual
IO-390-D Series Engine Maintenance Manual
Step
"Crankshaft Idler Gear Shaft
Step 7
Installation" procedure in Chapter 72-
Install the
20
crankshaft
idler gear
shafts
(Figure 6).
Crankshaft Idler Gear Shafts
"Oil Plug Installation" procedure in
Step 8
Chapter 72-20
Install the
oil plugs (if
removed)
(Figure 7).
"Oil Pressure Relief Valve Installation"
Step 9
procedure in Chapter 72-50
Install the
oil pressure
relief valve
(Figure 8).
Oil Pressure Relief Valve
© 2020 Avco Corporation. All Rights Reserved
March 2020
Table 2 (Cont.)
Sequence of Engine Assembly Procedures
Reference
Figure 6
Figure 7
Oil Plugs
Figure 8
Step
"Tappet Assembly Installation"
Step 10
procedure in Chapter 72-20
Install the
tappet
assemblies
(Figure 9).
Tappets and Oil Seal Rings
"Crankshaft Bearing and O-Ring
Step 11
Installation" procedure in Chapter 72-
Install the
20
main
bearings,
bolts, and
O-rings in
the
crankcase
(Figure 10).
Main Bearings and O-Rings
"Propeller Governor Drive Installation"
Step 12
in Chapter 72-20
Install the
propeller
governor
drive
(Figure 11).
Propeller Governor Drive
Reference
Figure 9
Figure 10
Figure 11
72-10
Page 117
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