Yanmar 4TNV98 Service Manual page 220

3. Reinstall the oil pump assembly (Figure 9-22, (1))
into the gear case housing (Figure 9-22, 2).
Tighten the bolts to specified torque.
Figure 9-22
4. Reinstall the gear case cover and crankshaft
pulley. See Installation of Gear Case Cover on
page 137.
5. Reinstall the engine coolant pump V-pulley
(Figure 9-23, (1)), spacer (Figure 9-23, (2)),
engine cooling fan (Figure 9-23, (3)) and engine
cooling fan guard (if equipped).
Figure 9-23
6. Reinstall the V-belt. Tighten the V-belt to the
proper tension as described in Check and Adjust
Cooling Fan V-Belt on page 47.
4TNV98 & 4TNE98 Diesel Engine
218
Section 6. Lubrication System