•
Identify the mark “Y” or “TOP” on the
ring end to prevent the top and bottom of
the piston ring from being interchanged
and make the marked portion face
upward.
•
Adjust the angle among individual piston
ring gaps to 90( and fit a piston assem-
bling jig onto the piston, Use care not to
match the ring gaps with the pin direc-
tion.
•
Install the bearing by aligning it with the
connecting rod key groove and apply oil
to the bearing and piston.
•
Position the valve seating surface
toward the tappet hole and insert the
piston with hand.
Use care not to damage the cylinder
liner and piston, and slightly lift and
insert the piston into the cylinder so
that the ring may not be damaged by
the fillet of the liner.
•
Install the bearing in the connecting rod
cap and apply oil.
•
Make sure that the manufacture serial
numbers impressed on the connecting
rod cap and connecting rod big end are
identical, and install the connecting rod
cap by aligning it with dowel pin.
•
Wet the fixing bolts with oil, semi-tight-
enthem with hand, tighten them to 15
kg.m for 1st stage and 22 kg.m for 2nd
stage respectively, and finally to speci-
fied torque.
- 66 -
EAMD090I
Marked with the name of piston ring
manulacturing company
EA8M3006
Top ring gap
2nd ring gap
Oil ring gap
Piston
Piston pin
45
O
45
O
90
O
EAMD092I
Tappet hole
Valve seating
Torque
28 kg
•
m
