Honda GX630, Руководство по ремонту

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CYLINDER
14-11
PISTON PIN BORE I.D.
Measure and record the piston pin bore I.D. of the
piston.
If the measurement is more than the service limit,
replace the piston (page 14-6).
PISTON PIN O.D.
Measure and record the piston pin O.D. at three points
(both ends and middle). Take the minimum reading to
determine piston pin O.D.
If the measurement is less than the service limit,
replace the piston pin (page 14-3).
PISTON PIN-TO-PISTON PIN BORE
CLEARANCE
Subtract the piston pin O.D. from the piston pin bore
I.D. to obtain the piston pin-to-piston pin bore
clearance.
If the calculated clearance is more than the service limit,
replace the piston pin (page 14-3) and recheck the
clearance.
If the clearance is still more than the service limit with
the new piston pin, replace the piston (page 14-6).
PISTON RING SIDE CLEARANCE
Measure the clearance between each piston ring and
ring groove of the piston using feeler gauge.
If any of the measurements is more than the service
limit, inspect the piston ring width.
If necessary replace
the piston rings (top, second, oil) as a set (page 14-6)
and reinspect the clearance.
If any of the measurements is still more than the service
limit with the new piston rings, replace the piston (page
14-6).
If the piston ring width is normal, replace the piston
(page 14-6) and reinspect the clearance.
If necessary replace the piston rings (top, second, oil)
as a set (page 14-6) and reinspect the clearance.
STANDARD: 18.002 – 18.008 mm
(0.7087 – 0.7090 in)
SERVICE LIMIT: 18.042 mm (0.7103 in)
STANDARD: 17.994 – 18.000 mm
(0.7084 – 0.7087 in)
SERVICE LIMIT: 17.95 mm (0.707 in)
STANDARD: 0.002 – 0.014 mm
(0.0001 – 0.0006 in)
SERVICE LIMIT: 0.08 mm (0.003 in)
STANDARD:
Top:
0.050 – 0.080 mm (0.0020 – 0.0031 in)
Second: 0.050 – 0.080 mm (0.0020 – 0.0031 in)
SERVICE LIMIT:
Top:
0.15 mm (0.06 in)
Second: 0.15 mm (0.06 in)
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