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FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06
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CYLINDER HEAD, removal
Important
Do not remove the cylinder head when hot to avoid
deformation.
lf cylinder head is deformed by more than 0.10 mm, level it off by
removing a maximum of 0.20 mm.
 For the cylinder head tightening procedure see page 57.
Valves
To remove the valves it is necessary to remove the collets; place a
spacer under the valve head, press strongly on the spring cap as
shown in the picture.
Components: 1 Valve stem
2 Valve stem seal ring
3 Spring seat
4 Spring
5 Spring cap
6 Collets
Valve stem sealing rings - Reassembly
To prevent deformation of the sealing ring 1 as it is inserted onto the
valve guide, insert it onto tool "7107-1460-047" 2 (after lubricating
the sealing ring) and proceed as shown int the picture ensuring that
gasket 1 is completely fitted.
Valve springs
Measure free height with a gauge.
Free height A = 46 mm.
Note: If the free height A is less than 43,5 mm replace the spring.
Disassembly / Reassembly
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