Replace Front Crankshaft Seal - Yanmar BY Series Service Manual

ENGINE
10. Torque-turn tighten all bolts to specification
using torsion angle tool (Figure 5-120). Turn
crankshaft by hand to ensure there is no
binding.
Figure 5-120
Figure 5-120
Main Bearing Bolt Torque
Item
Main Bearing
Cap Bolts
(torque-turn)
11. Check crankshaft end play after all bearing
caps are installed.
12. Install pistons and connecting rods. Install
piston cooling nozzles. See Install Piston and
Connecting Rod on page 5-34.
13. Install oil deflector.
14. Install oil pump, oil suction pipe with strainer
and the oil sump. See Oil Pump on page 8-12.
15. Install rear crankshaft seal housing. See
Replace Rear Crankshaft Seal on page 5-40.
16. Install timing chain. See Remove and Install
Timing Chain on page 5-49.
17. Install timing case cover using a new gasket.
See Install Timing Case Cover on page 5-49.
18. Install vibration damper. See Remove and
Install Vibration Damper - 4BY2 on page 5-46
or Remove and Install Vibration Damper - 6BY2
on page 5-47.
5-64
Specification
22 N·m (16 ft-lb) plus 90°
© 2009 Yanmar Marine International
Cylinder Block and Crankshaft
19. Install flywheel. See Install Flywheel on
page 5-41.
20. Install flywheel housing. See Remove and
Install Flywheel Housing on page 5-37.
21. Install cylinder head. See Install Cylinder Head
on page 5-27.
22. Add engine oil. See Change Engine Oil and
Replace Engine Oil Filter Element on page 8-9.

Replace Front Crankshaft Seal

1. Remove alternator belt and seawater pump
belt. See Remove and Install Alternator on
page 11-5 and Replace Seawater Pump Belt on
page 7-19.
2. Remove vibration damper. See Remove and
Install Vibration Damper - 4BY2 on page 5-46
or Remove and Install Vibration Damper - 6BY2
on page 5-47.
Figure 5-121
Figure 5-121
3. Install special tool OEM No. 11 1 212 to the end
of crankshaft.
BY Service Manual