Montero SR 4WD V6-3.5L SOHC (1997)
Piston Pin: Service and Repair
REPLACEMENT
1. Remove the snap rings from the piston pin.
2. When removing the piston pin, heat the piston to approximately 70° C (158° F) and pull out the piston pin.
NOTE: The clearance between the piston and the piston pin is an almost tight fit at normal temperature. Therefore, be sure to heat the piston
before pulling out the piston pin. In addition, note that the piston is hot after heating.
3. When installing the piston pin, heat the piston pin to approximately 70° C (158° F) and set the snap ring on one side first. Be sure to install the
snap ring with the shear droop directed toward the inside.
4. With the front mark of the connecting rod and that of the piston located on the same side, insert the piston pin.
5. After insertion of the piston pin, set the other snap ring.
NOTE:
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Apply an ample coat of engine oil to the periphery of the piston pin and the hole of the connecting rod small end.
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The clearance between the piston and the piston pin is an almost tight fit at normal temperature. Therefore, be sure to heat the piston before
inserting the piston pin.
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In addition, note that the piston is hot after heating.