Gilera 2008 MSS Nexus User Manual page 21

MSS Nexus 300 i.e. E3 ( 2008)
- Check the sealing surfaces for the intake and exhaust manifold.
- Check that the bearings of the camshaft and the rocker pins exhibit no wear.
- Check that the head cover surface is not worn.
- Check that the coolant sealing pad exhibits no oxidation.
- Insert the valves into the cylinder head.
- Alternatively check the intake and exhaust
valves.
- The test is carried out by filling the manifold with
petrol and checking that the head does not ooze
through the valves when these are just pressed
with the fingers.
Measure the camshaft bearing seats and rocking
lever support pins with a bore meter
Specification
bearing «A»
bearing «B»
bearing «C»
Measure the unloaded spring length
Characteristic
Standard length
40.2 mm
Allowable limit after use:
38.2 mm
HEAD BEARINGS
Characteristics
Desc./Quantity
Ø 12.000 - 12.018 mm
Ø 20.000 ÷ 20.021 mm
Ø 37.000 - 37.025 mm
CHAR - 21