Yanmar 2TNV70 Service Manual page 140

ENGINE
(6)
(2)
1 – Fuel Injection Pump Side of Engine
2 – Piston Identification Mark
3 – Embossed Mark on Connecting Rod
4 – Connecting Rod and Cap Match Marks
5 – Flywheel End of Engine
6 – Camshaft Side of Engine
Figure 6-85
5. Lubricate and install the wrist pin
(Figure 6-86, (6)) through the piston and
connecting rod.
6. Reinstall the second circlip (Figure 6-86, (5))
and ensure it is securely seated in the groove.
Note: If installing new piston rings the end gap
must be checked and adjusted as
necessary. See Inspection of Pistons,
Piston Rings and Wrist Pin on
page 6-46. Use a piston ring end gap
filing tool to adjust the piston ring end
gap on new piston rings.
6-54
(1)
(5)
(3)
(4)
0000227A
(5)
(9)
(8)
Figure 6-86
Note: Reinstall the top and second piston rings
with the stamped "makers mark"
(Figure 6-87, (1)) facing the top of the
piston. The "makers mark" may vary in
appearance but will always be located on
the top surface of the piston ring
adjacent to the piston ring gap. The oil
ring and oil ring expander can be
installed either side up.
Figure 6-87
IMPORTANT
Always use a piston ring expander when
installing piston rings. Never attempt to
install piston rings by hand.
TNV IDI Service Manual
Cylinder Block
(3)
(4)
(6)
(5)
(7)
(2)
(1)
0001705A
(1)
0000225A