Valve Guide Check And Maintenance; Removal Of The Valve Guide - MV Agusta Brutale 990 R Service Manual

Valve guide check and maintenance

In order to carry out this procedure the following tools
are necessary:
Control tampon n°800095429
Tampon n°8000A2385
valve stem-valve guide play: 0,01÷0,03 mm inlet
0,02÷0,04 mm exhaust
coupling limit : 0,08 mm inlet
0,1 mm exhaust
internal guide Ø limit: 4,55 mm
Proceed with an accurate visual check of the valve
guide.
In order to determine the coupling wear between
guide and valve stem it is necessary to measure the
play using a control tampon and micrometer.
The control tampon 800095429 (Ø 4,55) must
NOTE
not pass.
In the case of substituting the guide valve it
NOTE
is necessary to check and if necessary also
substitute the valve.

Removal of the valve guide

After having removed the valves and rubber holdings
as described in the relative paragraph, continue as
follows:
Slowly and evenly heat the cylinder head up to 100°.
Using tampon n°8000A2385 slide out the valve guide.
Continue with a visual check of the slot to verify its
State.
Cylinder kit
- 21 -
800095429
8000A2385
C