IO-390-D Series Engine Maintenance Manual
72-05
© 2020 Avco Corporation. All Rights Reserved
Page 110
March 2020
IO-390-D Series Engine Maintenance Manual
Table 1 (Cont.)
Sequence of Engine Disassembly Procedures
Step
Reference
Step
Reference
Step 17
“Intercylinder Baffle Removal”
procedure in Chapter 72-30
Figure 17
Intercylinder Baffles
Step 20
“Piston Removal” procedure in Chapter
72-30
Figure 20
Piston
Remove the
inter-
cylinder
baffles
(Figure 17).
Remove the
pistons
(Figure 20).
Step 18
Chapter 72-30 in this manual
Figure 18
Rockers, Shroud Tubes,
and Push Rods
Step 21
“Connecting Rod Removal” in Chapter
72-20
Figure 20
Connecting Rod
Remove the
rocker
covers,
valve
rockers,
rocker
shafts, push
rods, and
shroud
tubes
(Figure 18).
Remove the
connecting
rods
(Figure 21).
Step 19
“Cylinder Removal” procedure in
Chapter 72-30
Figure 19
Engine Cylinders
Step 22
“Oil Pressure Relief Valve Removal”
procedure in Chapter 72-50
Figure 21
Oil Pressure Relief Valve
Continue to
remove the
engine
cylinders
(Figure 19).
Remove the
oil pressure
relief valve
(Figure 22).
