Mitsubishi S4Q2 User Manual

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Service Manual Mitsubishi SQ-Series diesel engines
Version 08/2004
PISTONS, CONNECTING RODS,
CRANKSHAFT AND CRANKCASE
ENGLISH
ENGINE MAIN PARTS
3) Install the snap rings in the grooves in the
piston with a pliers. Make sure the snap rings
fit in the grooves properly.
9. Installing piston rings
Using piston ring pliers (31391–12900), install the
compression (No.1 and No.2) rings and oil ring on
the piston with the mark “R” toward the top of the
piston.
Figure 144 Reassembling piston (2)
Pliers
NOTE
The snap ring ends must be toward the bottom of the
piston.
Figure 145 Piston and piston rings
Mark pointing
upwards
No. 1
ring
No. 2
ring
Oil ring
Figure 146 Oil ring end gap and spring joint
Spring joint
Ring end gap
NOTE
The oil ring must be installed on the piston with the
ring end gap 180° from the coil spring joint.

Mitsubishi S4Q2 Specifications

General

Brand	Mitsubishi
Model	S4Q2
Category	Engine
Language	English