PIAGGIO Beverly 400 E5 - Page 38

- Check the deviation of the valve stem by resting
it on a «V» shaped abutment and measuring the
extent of the deformation with a dial gauge.
Characteristic
Limit allowed:
(0.0007)in (0.02)mm
- Check the oscillation of the valve head by ar-
ranging a dial gauge at right angle relative to the
valve head and rotate it on a "V" shaped abutment.
Characteristic
Limit allowed:
(0.007)in (0.2)mm
Measure the valve guide.
Characteristic
Valve guide:
0.196(+0 +0.0004)in 5(+0 +0.012)mm
- After measuring the valve guide diameter and the
valve stem diameter, check clearance between
guide and stem.
INTAKE
Specification Desc./Quantity
Standard clearance: (0.001÷0.002)in (0.028÷0.055)mm
Limit allowed: (0.003)in (0.08)mm
EXHAUST
Specification Desc./Quantity
Standard clearance: (0.001÷0.003)in (0.05÷0.077)mm
Technical Data Beverly 400 E5
DT - 38