Rato R80, Maintenance Manual, Page: 10 / 79

Part I Introduction
6
Piston ring
Piston ring side clearance: top
ring/ring 2
Oil ring
Piston ring closing clearance: top
ring/ring 2
Oil ring
Piston ring width: top ring/ring 2/oil
ring
0.015-0.045mm
--
0.2-0.4mm
0.15-0.35mm
1.5mm
2.5mm
0.15mm
--
1.0mm
1.0mm
1.37mm
2.37mm
Connecting
rod
Inner diameter of small end
Inner diameter of big end
Big end oil film clearance
Small end side clearance
18.011mm
30.02mm
0.040-0.063mm
0.1-0.7mm
18.07mm
30.066mm
0.12mm
1.1mm
Crankshaft Outer diameter of main journal 29.98mm 29.92mm
Valve
Valve clearance
Outer diameter of
valve stem
Conduit inner
diameter
Lifter clearance
Valve seat contact
width
Free length of
spring
Intake
Exhaust
Intake
Exhaust
Intake/exhaust
Intake
Exhaust
0.15±0.02mm
0.20±0.02 mm
5.48mm
5.44mm
5.50mm
0.02-0.044mm
0.06-0.087mm
0.8mm
34.0mm
--
--
5.318mm
5.275mm
5.572mm
0.1mm
0.12mm
2.0mm
32.5mm