IO-390-D Series Engine Maintenance Manual
© 2020 Avco Corporation. All Rights Reserved
72-10
March 2020
Page 119
IO-390-D Series Engine Maintenance Manual
Table 2 (Cont.)
Sequence of Engine Assembly Procedures
Step
Reference
Step
Reference
Step 19
Install the
accessory
housing,
fuel pump,
oil filter
base, oil
cooler
bypass
valve, oil
filter and
propeller
governor
(Figure 18)
Chapters 12-10, 72-25, 72-50, and 73-
10 in this manual and airframe
manufacturer’s instructions
Step 22
Install all
four engine
cylinders on
the
crankcase
(Figure 21)
“Cylinder Installation” section in
Chapter 72-30
Figure 18
Accessory Housing
Figure 21
Engine Cylinders
Step 20
Install the
oil sump on
the
crankcase
(Figure 19)
“Oil Sump Installation” in Chapter 72-
50
Figure 19
Oil Sump
Step 23
Install the
starter ring
gear support
on the
engine
(Figure 22)
“Starter Ring Gear Support Installation”
procedure in Chapter 72-70
Figure 22
Starter Ring Gear
Step 21
If removed
install the
piston in
each engine
cylinder
(Figure 20)
“Piston Installation” procedure in
Chapter 72-30
Step 24
“Intake Pipe Installation” procedure in
Chapter 72-80
Install the
intake
pipes, each
to the
correspond-
ing cylinder
(Figure 23).
Figure 20
Piston
Figure 23
Intake Pipes
