Inspecting The Cam Shaft - VESPA LX 150 4T Euro 3 Service Station Manual

Vespa LX 125 - 150 4T Euro 3
Refitting the valves
- Lubricate the valve guides with engine oil.
- Place the lower caps of the valve spring on the
head.
- Use the punch to fit the 2 sealing rings one at a
time.
Specific tooling
020306Y Punch for assembling valve seal
rings
- Fit the valves, the springs and the spring retaining
caps. Using the appropriate tool with adapter 11,
compress the springs and insert the cotters in their
seats.
Specific tooling
020382Y Valve cotters equipped with part 012
removal tool
020382Y011 adapter for valve removal tool

Inspecting the cam shaft

- Inspect the cam shaft for signs of abnormal wear
on the cams.
Characteristic
Standard diameter Bearing A
Ø: 32.5 mm -0.025 -0.050 mm
Standard diameter Bearing B
20 -0.020 -0.041 mm
Minimum admitted diameter bearing A
Ø: 32.440 mm
Minimum admitted diameter bearing B
Ø: 19.950 mm
Intake cam height
27.512 mm
Exhaust cam height
27.212 mm
Engine
ENG - 107