Toyota 4Y 2006 Manual page 80

Piston pin
Front mark
(Depression)
\
-
Front
2. Apply engine oil to the piston pin and piston pin hole.
3.
Use the SST and a press to press fit the piston pin.
SST 09221 -76002-71
(09221 -2501 8)
Note:
The assembly should be performed at room temperature.
[Point 121
Reassembly:
Install the bearing.
Ensure that no foreign matter, oil, etc., becomes attached to
the contact surface between the bearing and the connecting
rod.
Apply engine oil to the inner surface of the bearing.
Assemble the upper bearing to the locking groove of the
connecting rod.
Install the lower bearing to the locking groove of the bearing
cap.
Reassembly:
Attach a vinyl hose or similar to the connecting rod bolt to
protect the cylinder inner wall and the crankshaft.
Reassembly:
When reinstalling the piston to the cylinder, be sure to install it
in the same cylinder from which it was removed.
Apply engine oil to the sliding sections of the connecting rod
and the piston.
Use a piston ring compressor to assemble with the front mark
facing front.