Mitsubishi S12A2 User Manual

7-12
Chapter 7 ASSEMBLY OF BASIC ENGINE
2.7 Piston Ring - Install
(1) Install the piston rings to piston with ring expander.
(2) Install the oil ring with its end gap 180° away from the
joint of the coil spring, as shown in the illustration.
Piston and Piston Ring - Install
Oil Ring and Coil Spring Assembling
2.8 Crankshaft - Turn
(1) Install two bolts to the flywheel mounting holes of the
crankshaft.
(2) Using the bolts, turn the crankshaft with a bar.
Crankshaft - Turn
Every piston ring has a top mark near the end
gap.Install piston rings with the marks facing upward.
Be careful not to install piston rings upside down. If
piston rings are assembled incorrectly, it results in
defects such as engine seizure.
Up mark
No.1
compression ring
No.2
compression ring
Oil ring
Coil spring
Ring expander
P/N:37191-03200
Oil ring ends
Coil spring joint
180°
M22 × 1.5 mm

Mitsubishi S12A2 Specifications

General

Brand	Mitsubishi
Model	S12A2
Category	Engine
Language	English