Yanmar BY series, Руководство по обслуживанию

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ENGINE
5-68
BY Service Manual
Cylinder Block and Crankshaft
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
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
.
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.
Item Specification
Main Bearing
Cap Bolts
(torque-turn)
22 N·m (16 ft-lb) plus 90°