Remove And Install Timing Chain Tensioner - Yanmar BY Series Service Manual

ENGINE
3. If coolant pump was not removed, cut gasket at
three locations (Figure 5-88, (1)). Install gasket
and apply a thin coat of Three Bond
(Yanmar part No. 977770-1207F) sealing agent
to gasket at ends (arrow) on both sides.
Figure 5-88
Figure 5-88
4. Install timing case cover.
5. Install all bolts and tighten to an initial torque of
5 N·m (44 in.-lb), then tighten in an alternating
sequence to final torque specification of 14 N·m
(124 in.-lb).
6. After all bolts have been tightened to final
specification, check the torque and tighten
again if necessary.
7. Install front crankshaft seal. See Replace Front
Crankshaft Seal on page 5-64.
8. Install vibration dampener. See Remove and
Install Vibration Damper - 4BY2 on page 5-46
or Remove and Install Vibration Damper - 6BY2
on page 5-47.
9. Install alternator belt tensioner.
10. Install cylinder head. See Install Cylinder Head
on page 5-27.
11. Install oil sump. See Remove and Install Oil
Sump on page 8-11.
12. 4BY2: Install alternator. See Remove and
Install Alternator on page 11-5.
13. Install alternator belt and belt guard. See
Remove and Install Alternator on page 11-5
and Replace Seawater Pump Belt on
page 7-19.
5-50
®
1207F
(1)
0006524
© 2009 Yanmar Marine International
Camshaft and Timing Gear Train
14. Add engine oil. See Change Engine Oil and
Replace Engine Oil Filter Element on page 8-9.
15. Fill engine with coolant. See Drain and Fill
Closed Cooling System on page 7-10.
16. Connect battery negative (-) cable.
Remove and Install Timing Chain
Tensioner
1. Remove timing case cover. See Remove
Timing Case Cover on page 5-48.
2. Press both tensioner rails (Figure 5-89, (1)) in
direction of arrow. Insert special tool OEM No.
11 3 340 in designated openings in chain
tensioner (Figure 5-89, (2)).
Figure 5-89
Figure 5-89
Note: Illustration shows upper tensioner rail
removed and the tensioner with special
tool installed.
3. Remove bolts (Figure 5-89, (3)).
4. Remove chain tensioner (Figure 5-89, (2)).
5. Installation is in the reverse of removal.
BY Service Manual