Yanmar BY Series Service Manual page 98

ENGINE
12. Install the connecting rod cap. Ensure the
connecting rod and cap have the same marking
number and that the marks are on the same
side (Figure 5-62).
Figure 5-62
Figure 5-62
13. Lightly oil NEW bolts and install to an initial
torque of 5 N·m (44 in.-lb) (Figure 5-63).
Torque-turn tighten to final specification of
20 N·m (177 in.-lb) plus 70°. NOTICE: NEVER
install used connecting rod cap bolts. ALWAYS
install new bolts when installing connecting rod
cap.
Figure 5-63
Figure 5-63
5-36
14. Check that the piston cooling nozzles are in
perfect condition and fully open. If necessary,
clean with compressed air. WARNING! Flying
Object Hazard. ALWAYS wear eye protection
when servicing the engine and when using
compressed air or high-pressure water.
Dust, flying debris, compressed air,
pressurized water or steam may injure your
eyes. NOTICE: Use care not to damage the
piston cooling nozzles. The oil spray must hit
the piston precisely. If it does not, the piston will
become too warm, resulting in engine
breakdown. NEVER straighten damaged
nozzles. They must be replaced.
15. Install the piston cooling nozzles and tighten
the banjo bolts to 23 N·m (17 ft-lb).
16. Install oil deflector and tighten bolts to 10 N·m
(89 in.-lb)
17. Install oil pump. See Oil Pump on page 8-12.
18. Install the oil sump. See Remove and Install Oil
Sump on page 8-11.
19. Install the cylinder head. See Install Cylinder
Head on page 5-27.
© 2009 Yanmar Marine International
Pistons and Cylinders
BY Service Manual