Buell 2002 X1, Руководство пользователя

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3-26 2002 Buell X1: Engine
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Boring and Honing Cylinder
When cylinder requires oversize reboring to beyond 0.030 in.
(0.762 mm), the oversize limit has been exceeded and cylin-
der must be replaced.
1. Bore cylinder with gaskets and torque plates attached.
Bore to 0.003 in. (0.076 mm) under the desired finished
size.
2. Hone the cylinder to its finished size using a 280 grit rigid
hone followed by a 240 grit flexible ball hone. Honing
must be done with the torque plates attached. All honing
must be done from the bottom (crankcase) end of the
cylinder. Work for a 60° crosshatch pattern.
Fitting Piston Rings
NOTE
Ring sets and pistons, 0.040 in. (1.016 mm) oversize, are not
available on 1200cc engines.
See Figure 3-35. Piston rings are of two types: compression
(1, 2) and oil control (3). The two compression rings are posi-
tioned in the two upper piston ring grooves. The dot on the
second compression ring must face upward. Ring sets are
available to fit standard and oversize pistons.
Piston ring sets must be properly fitted to piston and cylinder:
1. See Figure 3-36. Place piston in cylinder about 1/2 in.
(12.7 mm) from top. Set ring to be checked squarely
against piston as shown. Check end gap with thickness
gauge. See
3.1 SPECIFICATIONS for tolerance.
NOTE
See SERVICE WEAR LIMITS for end gap dimensions. Do
not file rings to obtain proper gap.
Figure 3-35. Piston Rings
1. Top Compression Ring – Install either side up
2. Second Compression Ring – Install dot toward
top
3. Oil Control Rings
2
1
3
6612
Dot
Table 3-8. Final Cylinder Bore Sizes
BORE SIZES IN. MM
Standard bore* 3.4978 in. 88.8441 mm
0.005 in. OS bore
(0.127 mm)
3.502 in. 88.951 mm
0.010 in. OS bore
(0.254 mm)
3.507 in. 89.078 mm
0.020 in. OS bore
(0.508 mm)
3.517 in. 89.332 mm
0.030 in. OS bore
(0.762 mm)
3.527 in. 89.586 mm
*All bore sizes + 0.0002 in. (0.0051 mm)
Figure 3-36. Measuring Ring End Gap
2783a