Honda WX15T, Manual

Page: 85 / 100

11-10
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CRANKCASE
CRANKCASE COVER/CYLINDER
BARREL/PISTON/CONNECTING ROD/
CRANKSHAFT/CAMSHAFT
INSPECTION
CYLINDER SLEEVE I.D.
Measure and record the cylinder I.D. at three levels in
both the "X" axis (perpendicular to crankshaft) and the
"Y" axis (parallel to crankshaft). Take the maximum
reading to determine cylinder wear and taper.
If the measurement is more than the service limit,
replace the cylinder barrel.
Inspect the piston skirt O.D.
(page 11-10)
PISTON SKIRT O.D.
Measure and record the piston skirt O.D. at a point 10
mm (0.4 in) from the bottom of the skirt and 90° to the
piston pin bore.
If the measurement is less than the service limit,
replace the piston and rings
(page 11-6) . Do not hone
the cylinder.
Inspect the cylinder sleeve I.D.
(page 11-10)
PISTON-TO-CYLINDER CLEARANCE
Subtract the piston skirt O.D. from the cylinder sleeve
I.D. to obtain the piston-to-cylinder clearance.
If the calculated clearance is more than the service limit,
replace the piston and recheck the clearance.
If the clearance is still more than the service limit with a
new piston, replace the cylinder barrel.
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 11-6) .
Inspect the piston pin O.D. (page 11-11) .
STANDARD: 41.800 – 41.815 mm (1.6457 – 1.6463 in)
SERVICE LIMIT: 41.900 mm (1.6496 in)
X
Y
STANDARD: 41.770 – 41.790 mm (1.6445 – 1.6453 in)
SERVICE LIMIT: 41.700 mm (1.6417 in)
10 mm
90°
STANDARD: 0.010 – 0.045 mm (0.0004 – 0.0018 in)
SERVICE LIMIT: 0.120 mm (0.0047 in)
STANDARD: 10.002 – 10.018 mm (0.3938– 0.3944 in)
SERVICE LIMIT: 10.050 mm (0.3957 in)