MOTO GUZZI V750 IE Mode D'emploi page 775

Engine
Checking the cylinder
•
After checking for scoring, check cylin-
der surface wear using a dial gauge
graduated in hundredths of a millime-
tre.
•
Measure the inner diameter of the cyl-
inders at three different heights, turn
the dial gauge (graduated in hun-
dredths of a millimetre) 90° and repeat
the measurements; set the dial gauge
graduated in hundredths of a millimetre
to zero using a ring gauge before
measuring.
key:
1. 1st measurement
2. 2nd measurement
3. 3rd measurement
Type
G 84.000-84.007 mm (3.3071-3.3073 in)
H 84.007-84.014 mm (3.3074-3.3076 in)
L 84.014-84.021 mm (3.3076-3.3079 in)
M 84.021-84.028 mm (3.3079-3.3082 in)
Checking the piston
•
Measure the piston skirt diameter (1)
with a micrometer from the piston lower
border (2)=10 mm (0.39 in).
•
Replace the cylinder, the piston and
the piston ring all together if not com-
plying with specifications.
Type
G 83.953-83.960 mm (3.3052-3.3055 in)
H 83.960-83.967 mm (3.3055-3.3058 in)
L 83.967-83.974 mm (3.3058-3.3061 in)
ENG - 80
C
YLINDERS CONTROL
Allowed diameter
P
ISTONS CHECK
Allowed diameter
Engine 750 Euro 4
Maximum clearance between the piston and
cylinder (MAXIMUM WEAR VALUE)
0.08 mm (0.0031 in)
0.08 mm (0.0031 in)
0.08 mm (0.0031 in)
0.08 mm (0.0031 in)
Maximum clearance between the piston and
cylinder (MAXIMUM WEAR VALUE)
0.08 mm (0.0031 in)
0.08 mm (0.0031 in)
0.08 mm (0.0031 in)