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Removing and installing valve guides
104
D For removing and installing cylinder head,
see page 93
D For removing and installing valves,
see page 101
Fig. 1
Press valve guide out of the combustion chamber
side using pressing mandrel (special tool).
Oil new valve guide and drive/press it into the
cylinder head using pressing mandrel and spacer
sleeve (special tool).
Fig. 2
The valve guides vary only in length.
1 Inlet = long guide
2 Exhaust = short guide
3 Press-in depth (see publication “Service Data“).
The correct press-in depth is obtained by using the
spacer sleeve.
Afterwards ream valve guide to specified
dimension.
Note:
When the valve guides have been
changed, the valve seats too must be re-
worked (see technical data and manufac-
turers’ instructions for valve seat lathes
found in individual workshops).
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