APRILIA SHIVER 900 Service Station Manual page 256

Engine
•
Measure the pin outside diameter (a)
and if not complying with specifica-
tions, replace the pin.
Pin outside diameter: 22.00 - 21.97 mm (0.8661
- 0.8650 in) Limit: 21.96 mm (0.8646 in)
•
Measure the pin housing diameter (b)
and replace the piston if not complying
with specifications.
Pin housing diameter (b): 22.010 - 22.015 mm
(0.8665 - 0.8667 in)
•
Calculate the clearance between pin
and pin hole and, if not complying with
specifications, replace both pin and
piston.
Pin - piston clearance: C = b - a
0.010 - 0.045 mm (0.0004 - 0.0018 in)
Limit: 0.060 mm (0.0024 in)
CAUTION
TO ANY CYLINDER TYPE THE SPECIFIC PISTON MUST BE COUPLED.
Specification
Cylinder-piston class A coupling
Cylinder-piston class B coupling
Cylinder-piston class C coupling
Cylinder-piston class D coupling
Fitting clearance
Fitting the piston
The top of the piston is stamped with an arrow that indicates the direction of installation, towards the
cylinder's output.
•
In order to reinstall the seal rings on the piston, position that arrow stamped on outside of
the pinion so that it is facing the operator.
ENG - 256
P -
ISTON CYLINDER COUPLING
Cylinder: 91.990 - 91.997 mm (3.6216 - 3.6219 in)
Piston: 91.933 - 91.940 mm (3.6217 - 3.6197 in)
Cylinder: 91.997 - 92.004 mm (3.6219 - 3.6222 in)
Piston: 91.940 - 91.947 mm (3.6197 - 3.6199 in)
Cylinder: 92.004 - 92.011 mm (3.6222 - 3.6225 in)
Piston: 91.947 - 91.954 mm (3.6199 - 3.6202 in)
Cylinder: 92.011 - 92.018 mm (3.6225 - 3.6227 in)
Piston: 91.954 - 91.961 mm (3.6202 - 3.6205 in)
0.050 - 0.064 mm (0.00197 - 0.00252 in)
SHIVER 900
Desc./Quantity