Service manual

G420F(FE) Service Manual Chapter 3. Engine Mechanical System 98
Assembly
1. Using the special tool piston pin setting tool
(09234-33001), assemble the piston and
connecting rod as below.
1) Apply engine oil to the outer surface of the
piston pin and small end bore of the connecting
rod.
2) With the front mark faced upward, fix the
connecting rod and piston and insert it into the
piston pin assembly.
Front mark
Piston side 0 (engraved)
Connecting rod side Number (embossed)
3) Using a press, press-fit the piston pin into the
pin hole with the specified pressure on the pin
end through the push rod.
If the pressure is required more than the
specified value, follow the next step.
Press-fit pressure of piston pin 350 ~ 1350kg
4) Rotate the push rod to a half turn, remove the
piston connecting rod assembly from the
support.
5) After press fitting the piston pin, check that the
connecting rod for smooth slip and free
movement.
2. Install the piston ring to the piston in the following
order.
1) Install 3 pieces of oil ring. Install the spacer
lower side rail and upper side rail in order.
When installing the side rail, do not use a piston
ring expander to expand gap as usual because
the side rail is broken. After placing one end of
the side rail between the piston ring groove and
spacer, grasp the lower side securely and press
the side rail to the position by hand as shown in
the illustration. At this time, after installing the
lower side rail, install the upper side rail.