MOTO GUZZI Stelvio 1200 4V, Service Station Manual

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PIN - PISTON COUPLING
Specification Desc./Quantity
Pin diameter 21.998 - 21.994 mm (0.86606 - 0.86590 in)
Pin hole diameter on piston 22.016 - 22.011 mm (0.86677 - 0.86657 in)
Clearance between pin and holes on piston 0.013 - 0.022 mm (0.00051 - 0.00087 in)
Piston rings
On each piston there are:
•
1 top piston ring;
•
1 middle piston ring;
•
1 oil scraper piston ring.
Turn the rings so that the coupling ends are 120 degrees from each other.
CLEARANCE BETWEEN PISTON RINGS AND SEATS ON PISTON
Specification Desc./Quantity
Top ring 0.030 - 0.065 mm (0.00118 - 0.00256 in)
Middle ring 0.020 - 0.055 mm (0.00079 - 0.00216 in)
Oil scraper ring 0.010 - 0.045 mm (0.00039 - 0.00177 in)
Gap between the end of the piston rings inserted in the cylinder:
•
Top and middle piston ring: 0.40 - 0.65 mm (0.00158 - 0.00255 in)
•
Oil scraper piston ring: 0.30 - 0.60 mm (0.00118 - 0.00236 in).
Crankcase - crankshaft - connecting rod
CRANKSHAFT SEAT (TIMING SYSTEM SIDE)
Specification Desc./Quantity
Diameter of crankshaft main journal, timing sys-
tem side
37.975 - 37.959 mm (1.49507 - 1.49444 in)
Inside diameter of crankshaft bushing, timing sys-
tem side
38.016 - 38.0 mm (1.49669 - 1.49606 in)
Clearance between bushing and main journal (tim-
ing system side)
0.025 - 0.057 mm (0.00098 - 0.00224 in)
STELVIO 4V - 1200
Characteristics
CHAR - 7