Removing And Installing Vibration Damper - 6By - Yanmar BY Series Service Manual

Camshaft and Timing Gear Train
Figure 5-80
8. Tighten bolt to specification. Use a torsion
angle tool such as that shown (Figure 5-80).
Specifications
Vibration Damper Bolt
Torque
Initial Torque
Second Torque
Third Torque
Final Torque
9. Install starter motor. See Remove and Install
Starter Motor on page 10-7.
10. Install alternator and seawater pump belts. See
Remove and Install Alternator on page 11-7
and Replace Seawater Pump Belt on
page 7-21.
11. Connect battery negative (-) cable.
Removing and Installing Vibration
Damper - 6BY
1. Disconnect battery negative (-) cable.
2. Remove alternator and seawater pump drive
belts. See Remove and Install Alternator on
page 11-7 and Replace Seawater Pump Belt on
page 7-21.
BY Service Manual
0003833
Specification
100 N·m (74 ft-lb)
Additional 60°
Additional 60°
Additional 30°
Figure 5-81
3. Remove bolts (Figure 5-78, (1)).
4. Remove the vibration damper.
5. Place vibration damper on crankshaft and
install new bolts.
6. Torque-turn tighten bolts diagonally to
specification.
Specifications
Vibration Damper Bolt
Torque
Initial Torque
Second Torque
7. Install alternator and seawater pump belts. See
Remove and Install Alternator on page 11-7
and Replace Seawater Pump Belt on
page 7-21.
8. Connect battery negative (-) cable.
ENGINE
Specification
20 N·m (177 in.-lb)
Additional 120°
5-51