Refitting The Valves; Inspecting The Cam Shaft - Gilera Nexus 500 Workshop Manual

Engine
- Measure the unloaded spring length.
Characteristic
Standard length:
44.4 mm
Admissible limit after use:
42.4 mm

Refitting the valves

- Place the valve spring support washers on the
head.
- Alternately insert the 4 oil guards using the spe-
cial tool.
- Lubricate the oil guards and the valve guides.
Specific tooling
020306Y Punch for assembling valve seal
rings
- Fit the valves, the springs and the spring retaining
washers. Using the appropriate tool with adapter,
compress the springs and insert the cotters in their
seats.
Specific tooling
020382Y Valve cotters equipped with part 012
removal tool
020382Y012 bush (valve removing tool)
N.B.
DO NOT CHANGE THE VALVE FITTING POSITION. FIT THE VALVE SPRINGS WITH THE REF-
ERENCE COLOUR ON COTTER SIDE (TURNS WITH GREATER PITCH).

Inspecting the cam shaft

- Check that the camshaft ends exhibit no scores or irregular wear.
- Using a micrometer, measure the camshaft capacity.
Specification
Bearing A Ø:
Bearing B diameter:
ENG - 70
STANDARD DIAMETER
Nexus 500
Desc./Quantity
42 - 0.060 -0.085 mm
20 - 0.020 -0.041 mm