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CHECK OF VALVES AND GUIDES
HEAD DISTRIBUTION
The following process applies to all of the valves and valve
guides.
Check:
• the valve seals.
If there are leaks from the valve seats, check the contact surfa-
ce, the seat and the width of the valve seat.
See the section .............
• Pour clean solvent (1) into the intake doors.
• Make sure the valves have a suitable seal.
NOTE:_________________________________
There should not be any leaks from the valve seat (2) Fig. A.
Replace:
• the valve guide.
NOTE:_________________________________
To make valve guide removal and installation operations
easier and to maintain correct assembly, heat the head in an
oven, taking it to 100° C (212° F).
• Remove the valve guide with a special extractor (3) Fig. B.
• Install the new valve guide with the special installer (4) and
extractor (3) Fig. C.
• After installing the valve guide, bore it with a reamer (5) to
create the correct clearance between the valve guide and
stem.
NOTE:_________________________________
After renstalling the valve guide, pass over the seat.
A
1
2
B
C
D
3
4
5
COPY - Moto GB - Grant Martland - grantmartland@motogb.co.uk
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