Gilera GP 800 i.e. Service Station Manual page 23

GP 800 i.e.
Specification
Specification
Cylinder diameter C
Piston Ø P
Name
Cylinder- Piston
Cylinder- Piston
Cylinder- Piston
Cylinder- Piston
N.B.
THE PISTON MUST BE INSTALLED WITH THE ARROW FACING TOWARDS THE EXHAUST SIDE,
THE PISTON RINGS MUST BE INSTALLED WITH THE WORD «TOP» OR THE STAMPED MARK
FACING UPWARDS.
- Calculate the coupling clearance between pin
and connecting rod end.
Characteristic
Standard clearance:
0.015 ÷ 0.029 mm
- Measure the capacity diameter on the piston.
Characteristic
Standard diameter:
22 + 0.006 + 0.001 mm
- Calculate the piston pin coupling clearance.
N.B.
THE PIN HOUSINGS HAVE 2 LUBRICATION CHANNELS. FOR THIS REASON, MEASUREMENT
MUST BE MADE ACCORDING TO THE PISTON AXIS.
Characteristic
Standard clearance:
0.001 ÷ 0.010 mm
HEIGHT TO MEASURE THE PISTON
A
B
CYLINDER - PISTON
COUPLING CATEGORIES
Initials Cylinder
A 87.990÷87.997
B 87.997 ÷ 87.004
C 88.004÷88.011
D 88.011÷88.018
Desc./Quantity
10 mm
43 mm
Desc./Quantity
88 +0.018-0.01 mm
87.968 ±0.014 mm
Piston Play on fitting
87.954÷87.961 0.029÷0.043
87.961 ÷ 87.968 0.029÷0.043
87.968÷87.975 0.029÷0.043
87.975 ÷ 87.982 0.029÷0.043
Characteristics
CHAR - 17