Piston Rings - MOTO GUZZI Norge 1200 Service Manual

Characteristics

Piston rings

Check the sealing piston rings and the oil scraper.
On each piston there are:
1 top piston ring;
1 middle stepped piston ring;
1 oil scraper piston ring.
The ends of the fitted piston rings are out of phase.
Fitting backlash detected between the ring thickness and seats on the piston:
Sealing rings and oil scraper 0.030 - 0.065 mm (0.00118 - 0.00256 in)
Gap between the end of the piston rings inserted in the cylinder:
Upper sealing ring and stepped ring 0.40 - 0.65 mm (0.00158 - 0.00255 in)
Oil scraper ring 0.30 - 0.60 mm (0.00118 - 0.00236 in).
Turn the rings so that the coupling ends are 120 degrees from each other.
Crankcase - crankshaft - connecting rod
CAMSHAFT (CAM) SUPPORT DIAMETER AND THEIR SEATS ON THE CRANKCASE
Specification
Shaft support diameter
Seat diameter on base
fitting clearance
CAMSHAFT (CAM) SUPPORT DIAMETER AND THEIR SEATS ON THE CRANKCASE
Specification
Shaft support diameter
Seat diameter on base
CHAR - 16
(TIMING SYSTEM SIDE)
(FLYWHEEL SIDE)
Norge 1200
Desc./Quantity
47.000 - 46.984 mm
(1.85039 ÷ 1.84976 inch)
47.025 - 47.050 mm
(1.85137 ÷ 1.85236 inch )
0.025 - 0.066 mm
(0.00098 ÷ 0.00260 inch)
Desc./Quantity
32.000 - 31.984 mm
(1.25984 ÷ 1.25921 inch)
32.025 - 32.050 mm
(1.26082 ÷ 1.26181 inch)