Installing The Seawater Pump; Installing The Idler Gear - Yanmar 6LY3 series Service Manual

ENGINE

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
(3)
Figure 5-98
1 – Positioning Mark
2 – Spindle Shaft
3 – Oil Hole
5-62
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(2)
(3)
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© 2007 Yanmar Marine International
Assembling the Engine and Components
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.
Idler Gear Side Clearance
0.12-0.22 mm
(0.0047-0.0086 in.)
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
(3)
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.
6LY3 Service Manual
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