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Special tools
Removal procedure
Removal: Piston ring
Removal: Piston pin
• Remove the piston pin by striking it with a rod and hammer.
• If the piston pin is difficult to remove, first heat the piston in hot
water or with a piston heater.
Inspection procedure
Inspection: Mitsubishi 6M70 Piston ring end gap
• Using the crown of a piston, push the piston ring horizontally into
a cylinder in the crankcase until it reaches the lower part of the
cylinder liner, where there is relatively small wear.
• Taking care not to move the piston ring, measure the end gap.
• If the measurement exceeds the limit, replace all the piston rings
as a set.
Mark Tool name and shape Part No. Application
Piston ring tool 31191-02900
Removal and installation of piston
rings
Connecting rod bushing
puller kit
MH062185
Removal and installation of connect-
ing rod bushings
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