Yanmar 4BY - Installation of Flywheel

ENGINE
BY Service Manual
5-45
Flywheel and Flywheel Housing
7. Install bolts and tighten securely.
8. Install oil sump. See Remove and Install Oil
Sump on page 8-16.
9. Install crankshaft sensor. See Replacing
Crankshaft Sensor on page 12-26.
10. Install flywheel. See Installation of Flywheel on
page 5-45.
11. Add engine oil to the correct oil level.
Installation of Flywheel
Figure 5-68
1. If removed, install the pilot bushing
(Figure 5-65, (3)) in the crankshaft.
2. Install torque plate (Figure 5-65, (2)).
IMPORTANT
Never reuse flywheel bolts. Always install
new flywheel bolts.
3. Install the flywheel on the crankshaft.
Note: Flywheel bolts are T-60 Torx head.
4. Apply medium strength thread lock and sealer
to the threads of the flywheel bolts
(Figure 5-65, (1)). Install bolts and tighten to
initial torque specification.
Flywheel Bolt Torque
5. Tighten flywheel bolts to final torque
specification.
6. Install drive coupling (See Remove and Install
Drive Coupling on page 5-42).
7. Install flywheel housing (See Remove and
Install Flywheel Housing on page 5-42).
Item Initial Torque Final Torque
Flywheel Bolt
15 N·m
(133 in.-lb)
120 N·m
(89 ft-lb)
0003577
(
1
)
(
2
)
(
3
)