Yanmar BY Series Service Manual page 96

Pistons and Cylinders
Figure 5-61
11. Apply a light coat of clean engine oil to the
bearing insert and crankshaft journal.
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 5-61).
Figure 5-62
IMPORTANT
NEVER install used connecting rod cap
bolts. Always install new bolts when
installing connecting rod cap.
13. Lightly oil NEW bolts and install to an initial
torque of 5 N·m (44 in.-lb). (Figure 5-62).
Torque-turn tighten to final specification of 20
N·m (177 in.-lb) plus 70°.
BY Service Manual
A
CAUTION
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.
• Failure to comply may result in minor
or moderate injury.
IMPORTANT
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. Do not straighten damaged
nozzles. They must be replaced.
14. Check that the piston cooling nozzles are in
perfect condition and fully open. If necessary,
clean with compressed air.
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 8-17.
18. Install the oil sump. See Remove and Install Oil
Sump on page 8-16.
19. Install the cylinder head. See Installation of
Cylinder Head on page 5-32.
ENGINE
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5-41