ENGINE
6-54
3TNV88F Service Manual
Crankshaft and Camshaft Components
6. If removed, reinstall the fuel injection pump.
Adjust the fuel injection timing the engine after
installation.
See Adjusting Fuel Injection Timing
■
Installation of timing gears
1. Set the No. 1 piston to top dead center.
2. Rotate the camshaft until the mark
is approximately at the
9 o’clock position
.
1 – Fuel injection pump gear
2 – Camshaft gear
3 – Optional accessory drive gear
4 – Crankshaft gear
5 – Direction of rotation
6 – Oil pump gear
7 – Idler gear
Figure 6-97
3. Lubricate the idler gear
(Figure 6-98, (2))
,
bushing
and idler gear shaft
with clean engine oil.
Figure 6-98
4. Align the timing gears as shown in
.
5. Reinstall the idler gear and idler gear shaft. Be
sure the oil hole in the bushing is facing toward
the top of the engine.
6. Ensure all three timing marks
B, C))
are aligned
.
7. When all gears are properly aligned, tighten the
idler gear retaining bolts to specified torque.
See Special Torque Chart on page 6-10 for
specifications.
■
Installation of gear case cover
1. Apply a continuous bead of ThreeBond Liquid
Gasket No. 1207F, YANMAR Part No. 977770-
1207F to the mounting area of the gear case
cover
. Be sure to circle the
bolt holes.
NOTICE
Be sure to align the flats on the oil pump with the
flats on the crankshaft gear when installing the
gear case cover.
2. Reinstall and tighten the gear case cover bolts.
Figure 6-99
3. Reinstall the crankshaft pulley.
NOTICE
Use the crankshaft pulley installation tool
(Figure 6-100, (3))
when reinstalling the pulley
(Figure 6-100, (1))
. The tool will guide the pulley
hub and protect the front seal
(Figure 6-100, (2))
from damage.
K0001709A
B
B
A
A
C C
1
2
3
4
5
6
7
K0001728A
1
3
2
K0001641A
1
3TNV88F_SVM_A4.book 54 ページ 2012年7月26日 木曜日 午後6時4分