Cub-cadet Yanmar 3TNV72 User Manual download pdf (Page 155)

ENGINE

6-56 TNV IDI Service Manual

Cylinder Block

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 6-48. Use a piston ring end gap

filing tool to adjust the piston ring end

gap on new piston rings.

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.

0000227A

(1)

(6)

(5)

(4)

(3)

(2)

0001705A

(3)

(4)

(6)

(7)

(5)

(2)

(1)

(8)

(9)

(5)

(1)

0000225A

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