Yanmar 3TNV82A-B, Service Manual

Page: 228 / 394

ENGINE
6-96
TNV DI Service Manual
Crankshaft and Camshaft Components
4. TNV84 - TNV88: Reinstall the dowels
(Figure 6-145, (5)) and a new O-ring
(Figure 6-145, (2)).
Figure 6-145
5. Reinstall the gear case (Figure 6-144, (1)) or
front plate (Figure 6-145, (1)). 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 6-95.
1. If removed, reinstall the camshaft end plate
(Figure 6-146, (1)), key, and timing gear
(Figure 6-146, (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 6-146, (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.
Note: 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 (Figure 6-146, (2)) 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 6-146, (3)).
Figure 6-146
6. If removed, reinstall the fuel injection pump.
Adjust the fuel injection timing the engine after
installation. See Adjusting Fuel Injection Timing
on page 7-34.
0002016
(1)
(3)
(4)
(2)
(5 )
0001966
(4)
(1)
(3)
(2)
(5)
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