Yanmar 4TNV98, Service Manual

Page: 208 / 246

4TNV98 & 4TNE98 Diesel Engine Section 5. Cooling System 206
• On models not equipped with an oil cooler,
remove the coolant drain plug (Figure 8-6, (1))
from the engine block.
Figure 8-6
5. Loosen the alternator mounting bolts. Loosen
and remove the V-belt and rotate the alternator
away from the engine and out of the way.
CAUTION
PINCH HAZARD!
Carefully rotate the alternator toward the
cylinder block while loosening the V-belt.
Failure to comply may result in minor or
moderate injury.
6. Remove the engine coolant fan guard (if
equipped), engine coolant fan (Figure 8-7, (1)) ,
spacer (Figure 8-7, (2)) and engine coolant
pump V-pulley (Figure 8-7, (3)) .
Figure 8-7
7. Disconnect the coolant hoses and the
temperature switch lead wire from the engine
coolant pump.
8. Remove the engine coolant pump (Figure 8-7,
(4)) . Discard the gasket.