Replacing Front Crankshaft Seal - Yanmar BY Series Service Manual

ENGINE
8. Loosen bolts of the thrust bearing retaining cap
and tighten finger-tight.
9. Move each end of the crankshaft to center
thrust bearing.
Figure 5-117
10. Torque-turn tighten all bolts to specification
using torsion angle tool (Figure 5-117). Turn
crankshaft by hand to ensure there is no
binding.
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 Installation of
Piston and Connecting Rod on page 5-39.
13. Install oil pump, oil suction pipe with strainer,
and the oil sump. See Oil Pump on page 8-17.
14. Install rear crankshaft seal housing. See
Replacement of Rear Crankshaft Seal on
page 5-44.
15. Install timing case cover using a new gasket.
See Installing Timing Case Cover on
page 5-53.
5-68
Specification
22 N·m (16 ft-lb) plus 90°
Cylinder Block and Crankshaft
16. Install vibration damper. See Removing and
Installing Vibration Damper - 4BY on page 5-50
or Removing and Installing Vibration Damper -
6BY on page 5-51.
17. Install flywheel. See Installation of Flywheel on
page 5-45.
18. Install flywheel housing. See Remove and
Install Flywheel Housing on page 5-42.
19. Install cylinder head. See Installation of
Cylinder Head on page 5-32.

Replacing Front Crankshaft Seal

1. Remove alternator belt and seawater pump
belt. See Remove and Install Alternator on
page 11-7 and Replace Seawater Pump Belt on
page 7-21.
2. Remove vibration damper. See Removing and
Installing Vibration Damper - 4BY on page 5-50
or Removing and Installing Vibration Damper -
6BY on page 5-51.
Figure 5-118
3. Install special tool OEM No. 11 1 212 to the end
of crankshaft.
BY Service Manual