Yamaha EF1000iS, Руководство по обслуживанию

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CRANKSHAFT, PISTON AND PISTON RING
a
a
1
4. Measure:
9
Piston pin diameter
a
Out of specifications
→
Replace.
5. Inspect:
9
Check the piston pin enters smoothly
into the piston pin hole.
If the piston pin fits tightly into the pis-
ton, check the piston pin hole. If there is
any protrusion, use a knife or scraper to
gently remove it so that piston pin can
be pushed in gently with your fingers.
PISTON RING INSPECTION
1. Measure:
9
Piston ring end gap
Out of specification
→
Replace.
NOTE:
Insert the piston ring
1
into the cylinder, and
push it approximately
a
5 mm (0.2 in) into the
cylinder. Push the ring with the piston crown
so that the ring is at angles to the cylinder
bore.
Out of specifications
→
Replace the
piston and piston ring as a set.
ENG
Piston pin diameter:
9.99 ~ 10.00 mm
(0.3933 ~ 0.3937 in)
Limit:
9.95 mm
(0.3917 in)
Top ring
Wear limit Ring end gap
0.6 mm
(0.0236 in)
0.10 ~ 0.30 mm
(0.0039 ~ 0.0118 in)
2nd ring
0.6 mm
(0.0236 in)
0.10 ~ 0.30 mm
(0.0039 ~ 0.0118 in)
Oil ring
0.9 mm
(0.0354 in)
0.2 ~ 0.7 mm
(0.0078 ~ 00275 in)
7VV10-03 02.10.4 10:39 AM Page 24