5-23
CYLINDER AND PISTON
REMOVING THE PISTON
1. Remove:
• Piston pin clips “1”
• Piston pin “2”
• Piston “3”
CAUTION:
Do not use a hammer to drive the piston pin
out.
NOTE:
• Before removing the piston pin clip, cover the
crankcase opening with a clean rag to prevent
the piston pin clip from falling into the crank-
case.
• Before removing the piston pin, deburr the pis-
ton pin clip’s groove and the piston pin bore ar-
ea.
2. Remove:
• Top ring
• 2nd ring
• Oil ring
When removing a piston ring, open the end gap
with your fingers and lift the other side of the ring
over the piston crown.
CHECKING THE CYLINDER AND PISTON
1. Check:
• Piston wall
• Cylinder wall
Vertical scratches
→
Replace the cylinder,
and replace the piston and piston rings as a
set.
2. Measure:
• Piston-to-cylinder clearance
a. Measure cylinder bore “C” with the cylinder
bore gauge.
Measure cylinder bore “C” by taking side-to-side
and front-to-back measurements of the cylinder.
Then, find the average of the measurements.
Bore
56.985–57.010 mm
Taper limit
0.05 mm
Out of round limit
0.05 mm
ssssssssssssssssssssssssss
5-24
CYLINDER AND PISTON
b. If out of specification, replace the cylinder,
and replace the piston and piston rings as a
set.
c. Measure piston skirt diameter “D” “a”with the
micrometer.
d. If out of specification, replace the piston and
piston rings as a set.
e. Calculate the piston-to-cylinder clearance
with the following formula.
f. If out of specification, replace the cylinder,
and replace the piston and piston rings as a
set.
CHECKING THE PISTON RINGS
1. Measure:
• Piston ring side clearance
Out of specification
→
Replace the piston
and piston rings as a set.
NOTE:
Before measuring the piston ring side clearance,
eliminate any carbon deposits from the piston
ring grooves and piston rings.
2. Install:
• Piston ring
(into the cylinder)
NOTE:
Level the piston ring into the cylinder with the
piston crown.
“C” = maximum of D
1
2
–D
“T” = maximum of D
1
or D
2
- maximum of D
5
or D
6
“R” = maximum of D
1
, D
3
or D
5
- minimum of
D
2
, D
4
or D
6
b. 5.0 mm (0.20 in) from the bottom edge of the
piston
Piston
Diameter D
56.965–56.990 mm
• Piston-to-cylinder clearance =
Cylinder bore “C” -
Piston skirt diameter “D”
Piston-to-cylinder clearance
0.020–0.045 mm
Limit
0.15 mm
Piston ring
Top ring
Ring side clearance
0.030–0.065 mm
Limit
0.100 mm
2nd ring
Ring side clearance
0.020–0.055 mm
Limit
0.100 mm
a. 40 mm
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Содержание YZF-R15
Страница 1: ...2008 SERVICE MANUAL YZF R15 20P F8197 E0 ...
Страница 33: ...2 14 ELECTRICAL SPECIFICATIONS Coil resistance 54 0 66 0 Fuse 20 0A Ω Fuse ...
Страница 46: ...2 27 LUBRICATION POINTS AND LUBRICANT TYPES LUBRICATION DIAGRAMS A 1 2 3 4 5 6 7 ...
Страница 48: ...2 29 LUBRICATION POINTS AND LUBRICANT TYPES 1 2 3 4 ...
Страница 49: ...2 30 LUBRICATION POINTS AND LUBRICANT TYPES 1 Camshaft 2 Crankshaft 3 Main axle 4 Drive axle ...
Страница 50: ...2 31 COOLING SYSTEM DIAGRAMS COOLING SYSTEM DIAGRAMS 1 2 3 4 1 5 7 6 4 ...
Страница 52: ...2 33 CABLE ROUTING CABLE ROUTING 1 5 2 3 6 4 8 7 ...
Страница 54: ...2 35 CABLE ROUTING A A B B C C A A C C B B A B C 1 2 3 4 5 4 5 6 6 7 8 9 10 11 10 11 12 12 ...
Страница 56: ...2 37 CABLE ROUTING 1 2 5 4 3 ...
Страница 60: ...2 41 CABLE ROUTING A A B C D E 1 2 3 4 5 6 7 8 9 10 A ...
Страница 121: ...4 24 FRONT BRAKE Refer to BLEEDING THE HYDRAULIC BRAKE SYSTEM on page 3 18 ...
Страница 249: ...7 8 THROTTLE BODY ...
Страница 250: ...7 9 AIR INDUCTION SYSTEM AIR INDUCTION SYSTEM 1 2 5 4 5 6 3 2 1 6 4 3 ...
Страница 257: ......
Страница 269: ...8 12 CHARGING SYSTEM 1 AC magneto 2 Rectifier regulator 3 Battery 42 Fuse ...
Страница 271: ...8 14 CHARGING SYSTEM ...
Страница 275: ...8 18 LIGHTING SYSTEM ...
Страница 285: ...8 28 COOLING SYSTEM ...
Страница 309: ...8 52 FUEL PUMP SYSTEM 3 Battery 10 Main switch 11 ECU engine control unit 19 Fuel pump 42 Fuse 43 Stop switch ...
Страница 311: ...8 54 FUEL PUMP SYSTEM ...
Страница 312: ...8 55 ELECTRICAL COMPONENTS ELECTRICAL COMPONENTS 1 4 8 17 23 2 3 5 6 7 9 10 11 12 13 14 15 16 18 19 20 21 22 ...