10-3
CYLINDER / PISTON
WARPAGE INSPECTION
●
Check the cylinder for warpage by placing a straight
edge and feeler gauge across the stud holes. Replace
the cylinder if the service limit is exceeded.
SERVICE LIMIT : 0.100 mm
·
Any clearance between the cylinder and head due to
damage or warpage will result in compression leaks
and reduced performance.
PISTON / PISTON RING
REMOVAL
·
Place a clean shop towel over the crankcase to
prevent the possibility of the clip falling into the
crankcase.
●
Remove the piston pin clip using a pair of pliers.
●
Press the piston pin out of the piston.
·
Do not damage or scratch the piston.
·
Do not apply side force to the connecting rod.
·
Do not let the clip fall into the crankcase.
PISTON DISASSEMBLY
●
Clean carbon deposits from the piston.
●
Inspect the piston rings for movement by pressing the
rings. The rings should be able to move in its groove
without catching.
●
Spread each piston ring and remove it by lifting it up at
a point just opposite the gap.
·
Do not damage the piston ring by spreading the ends
too far.
PISTON INSPECTION
●
Measure the clearance between the piston ring and
piston grooves.
SERVICE LIMIT : TOP : 0.090 mm
SECOND : 0.090 mm
OIL RING : 0.090 mm
●
Inspect the piston for wear or damage.
RULLER
FILTER GAUGE
PISTON
PISTON PIN CLIP
PISTON PIN
PISTON RING
RING
PISTON
ABNORMAL
WEAR
CYLINDER
Summary of Contents for ROADWIN VJ125 - SERVICE
Page 3: ......
Page 23: ...MEMO...
Page 39: ...MEMO...
Page 47: ...4 0 FUEL SYSTEM...
Page 60: ...MEMO...
Page 61: ...5 0 COOLING SYSTEM...
Page 64: ...MEMO...
Page 65: ...6 0 ENGINE REMOVAL INSTALLATION...
Page 69: ...7 0 CLUTCH GEARSHIFT...
Page 82: ...MEMO...
Page 83: ...8 0 A C GENERATOR STARTER CLUTCH...
Page 93: ...9 0 CYLINDER HEAD VALVES...
Page 109: ...10 0 CYLINDER PISTON...
Page 116: ...MEMO...
Page 117: ...11 0 CRANKCASE TRANSMISSION CRANKSHAFT...
Page 130: ...MEMO...
Page 131: ...12 0 EXTERNAL PARTS...
Page 137: ...13 0 FRONT WHEEL FRONT FORK STEERING...
Page 161: ...14 0 REAR WHEEL REAR SUSPENSION...
Page 174: ...MEMO...
Page 175: ...15 0 HYDRAULIC BRAKE FRONT REAR...
Page 200: ...MEMO...
Page 208: ...MEMO...
Page 216: ...MEMO...
Page 228: ...MEMO...
Page 241: ...MEMO...
Page 249: ...MEMO...
Page 250: ...MEMO...
Page 251: ...SERVICEMANUAL 2004 1 PRINTED 2004 1 PUBLICATION NO C COPY...