Cylinder And Piston - Buell XB 2010 Service Manual

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CYLINDER AND PISTON

REMOVAL/DISASSEMBLY
PART NUMBER
HD-34623C PISTON PIN RETAINING RING
INSTALLER
1. Strip motorcycle as described under
TION FOR SERVICE.
2. Remove cylinder head. See
3. Clean crankcase around cylinder base to prevent dirt and
debris from entering crankcase while removing cylinder.
4. See Figure 3-70. Turn engine over until piston of cylinder
being removed is at bottom of its stroke.
5. Carefully raise cylinder just enough to permit placing clean
towel under piston to prevent any foreign matter from
falling into crankcase.
NOTE
If cylinder does not come loose, lightly tap a plastic hammer
perpendicular to the cylinder fins. Never try to pry a cylinder
up.
6. Carefully lift cylinder over piston and cylinder studs. Do
not allow piston to fall against cylinder studs. Discard cyl-
inder base gasket.
NOTE
With cylinder removed, be careful not to bend the cylinder
studs. The slightest bend could cause a stress riser and lead
to stud failure.
7. Install a 6 in. (152 mm) length of 1/2 in. (12.7 mm) ID
plastic or rubber hose over each cylinder stud. This will
protect the studs and the piston.
Wear safety glasses or goggles when removing or
installing piston pin retaining rings. Piston pin retaining
rings are compressed in the ring groove and can fly out
when removed from the groove, which could result in
serious eye injury. (00293a)
NOTE
DO NOT re-use piston pin retaining rings. Removal may
weaken retaining rings and they may break or dislodge if rein-
stalled resulting in engine damage.
TOOL NAME
3.4 ENGINE ROTA-
3.7 CYLINDER HEAD.
sm00155
1
2
3
4
10
11
7
8
1. Ring set
2. Piston
3. Piston pin
4. Retaining ring (2)
5. Head gasket
6. Dowel
7. Cylinder
8. Base gasket
9. Cylinder stud (4)
10. Connecting rod
11. Piston pin bushing
Figure 3-70. Cylinder and Piston
NOTE
Handle the piston with extreme care. The alloy used in these
pistons is very hard. Any scratches, gouges or other marks in
3.8
4
5
6
9
2010 XB Service: Engine 3-51