ENGINE
3TNV88F Service Manual
6-53
Crankshaft and Camshaft Components
Reassembly of Camshaft and Timing
Components
■
Installation of gear case or front plate
1. If removed, install a new camshaft bushing
using the appropriate
service
tool.
2. Apply a continuous bead of ThreeBond Liquid
Gasket No. 1207F, YANMAR Part No. 977770-
1207F to the mounting area of the gear case or
front plate. Be sure to circle each bolt hole.
Figure 6-94
3. Reinstall the dowels
and a
.
Figure 6-95
4. Reinstall the gear case
(Figure 6-94, (1))
or
. Tighten the bolts
to the specified torque.
■
Installation of camshaft
Note: The gear housing or front plate must be
reinstalled prior to installing the camshaft.
See Installation of gear case or front plate on
page 6-53.
1. If removed, reinstall the camshaft end plate
(Figure 6-96, (1))
, key, and timing gear
(Figure 6-96, (4))
onto the camshaft using a
press.
Note: Heat the gear to 356 - 392 °F (180 - 200
°C) and press onto the end of the
camshaft.
2. Rotate the cylinder block so that gravity will
keep the tappets
(Figure 6-96, (5))
in place and
out of the way of the camshaft lobes when the
camshaft is being reinstalled.
Note:
•
If the engine is not installed on an engine repair
fixture, stand the engine upright on the flywheel
end mounting flange.
•
The tappets are “mushroom” shaped and must
be installed from inside the engine crankcase.
3. Lubricate the tappets with clean oil or assembly
lube. Reinstall the tappets in their respective
locations in the cylinder block. Push the tappets
fully into the tappet bores so they will not
interfere with the installation of the camshaft.
4. Lubricate the camshaft
with
clean engine oil or assembly lube. Slowly insert
the camshaft through the front of the engine.
5. Reinstall and tighten the cap screws
(Figure 6-96, (3))
.
Figure 6-96
1
3
2
4
046374-00X00
K0002016
1
3
4
2
5
K0001966
4
1
3
2
5
3TNV88F_SVM_A4.book 53 ページ 2012年7月26日 木曜日 午後6時4分