Yamaha Fazer FZ8-SA, Руководство по обслуживанию

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CONNECTING RODS AND PISTONS
5-73
3. Measure:
• Piston pin bore inside diameter “b”
Out of specification
→
Replace the pis-
ton.
4. Calculate:
• Piston-pin-to-piston-pin-bore clearance
Out of specification
→
Replace the piston
pin and piston as a set.
EAS39P1504
CHECKING THE CONNECTING RODS
1. Measure:
• Crankshaft-pin-to-big-end-bearing clear-
ance
Out of specification
→
Replace the big
end bearings.
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The following procedure applies to all of the
connecting rods.
ECA13930
Do not interchange the big end bearings
and connecting rods. To obtain the correct
crankshaft-pin-to-big-end-bearing clear-
ance and prevent engine damage, the big
end bearings must be installed in their orig-
inal positions.
a. Clean the big end bearings, crankshaft
pins, and the inside of the connecting rods
halves.
b. Install the big end upper bearing into the
connecting rod and the big end lower bear-
ing into the connecting rod cap.
TIP
Align the projections “a” on the big end bear-
ings with the notches “b” in the connecting rod
and connecting rod cap.
c. Put a piece of Plastigauge® “1” on the
crankshaft pin.
Piston pin bore inside diameter
17.002–17.013 mm (0.6694–
0.6698 in)
Limit
17.043 mm (0.6710 in)
Piston-pin-to-piston-pin-bore clearance = Pis-
ton pin bore inside diameter “b” - Piston pin
outside diameter “a”
Piston-pin-to-piston-pin-bore
clearance
0.007–0.023 mm (0.0001–
0.0009 in)
Limit
0.073 mm (0.0029 in)
Crankshaft-pin-to-big-end-bear-
ing clearance
0.034–0.058 mm (0.0013–
0.0023 in)
Limit
0.09 mm (0.0035 in)