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
refinish the journals to any of the undersizes
listed below.
Unit: mm [in.]
3. Checking oil seal running surface
Check the oil seal sleeve running surface of the
crankshaft rear-end. If the sleeve is badly worn by
the oil seal, replace the oil seal sleeve.
Finishing dimension
Undersize
of journal
0.25
[0.0098]
64.75 [2.5492 ]
0.50
[0.0197]
64.50 [2.5394 ]
0.75
[0.0295]
64.25 [2.5295 ]
0.015
–
0.035
–
0.0006
–
0.0014
–
0.015
–
0.035
–
0.0006
–
0.0014
–
0.015
–
0.035
–
0.0006
–
0.0014
–
Figure 123 Fillet radius
R 3 mm
[0.12 in.]
R 3 mm
[0.12 in.]
NOTE
a Grind all crankpins to the same undersize.
b Finish the fillet radius to 3 mm [0.12 in.]
Figure 124 Checking oil seal running surface
Flywheel housing
Oil seal
Oil seal
running
surface
Oil seal
sleeve

Mitsubishi S4Q2 Specifications

General

Brand	Mitsubishi
Model	S4Q2
Category	Engine
Language	English