Yanmar 4TNV98 Service Manual page 116

Figure 6-90
3. Remove the oil pickup tube (Figure 6-91, (1)) and
O-ring (Figure 6-91, (2)).
Figure 6-91
4TNV98 & 4TNE98 Diesel Engine
Removal of Camshaft
1. Before removing the camshaft, check the
camshaft end play.
• Method A : Install a dial indicator (Figure 6-92,
(1)) on the cylinder block. Move the camshaft
(Figure 6-92, (2)) back and forth to measure the
end play. Record the measurement. See
Camshaft on page 68 for the service limit.
• Method B : Use a feeler gauge to measure the
clearance between the thrust plate (Figure 6-93,
(1)) and front camshaft bearing (Figure 6-93, (2)).
See Thrust Bearing on page 70 for the service
limit.
114
Figure 6-92
Figure 6-93
Section 3. Engine