Yanmar 6LY3 series - Installing the Seawater Pump; Installing the Idler Gear

ENGINE
Assembling the Engine and Components
5-62 6LY3 Service Manual
© 2007 Yanmar Marine International
Installing the Seawater Pump
Fit the seawater pump (Figure 5-97, (3)) to the
drive shaft housing (Figure 5-97, (1)). Secure the
pump with two M8 x 20 mm bolts and two M8 nuts.
Figure 5-97
Figure 5-97
1 – Drive Shaft Housing
2 – Cylinder Block
3 – Seawater Pump
Installing the Idler Gear
1. Align the oil hole (Figure 5-98, (3)) in the idler
spindle shaft (Figure 5-98, (2)) with the oil hole
in the engine block. The positioning mark on the
spindle shaft should be on top
(Figure 5-98, (1)).
Figure 5-98
Figure 5-98
1 – Positioning Mark
2 – Spindle Shaft
3 – Oil Hole
2. Secure the idler gear shaft with two
M8 x 25 mm bolts. Tighten bolts to the specified
torque values.
3. Measure the side clearance and compare with
the following specified value.
4. Bring and hold the No. 6 piston (water pump
end) to top dead center (TDC).
5. Orient the idler gear (Figure 5-99, (3)) as
necessary to set the “A” (Figure 5-99, (2))
between the two embossed marks on the crank
gear and the “C” (Figure 5-99, (1)) between the
two embossed marks on the cam gear.
Figure 5-99
Figure 5-99
1 – Adjusting Mark “C” for Cam Gear
2 – Adjusting Mark “A” for Cam Gear
3 – Idler Gear
6. Lubricate and secure the idler gear to its
spindle with four M10 bolts.
7. Tighten bolts to the following specified torque
value.
0005797
(1)
(2)
(3)
0005798
(1)
(2)
(3)
Idler Gear Side Clearance
0.12-0.22 mm
(0.0047-0.0086 in.)
0005799
(1)
(2)
(3)