![background image](http://html1.mh-extra.com/html/ducati/monster-695/monster-695_user-manual_2537677407.webp)
Head unit: valves - rocker arms
Changing valve seats
Mill the worn seats to remove them. Ensure that you do not damage the valve seat location on the head.
Check the diameter of the housings in the head and choose an adequately oversized valve seat to obtain an
interference fit to head of
0.11-0.16
mm. Spare valve seats are available with
0.03
and
0.06
mm outer diameter
oversize.
Heat the cylinder head slowly and evenly up to
200
°C
and cool the new seats in dry ice.
Drive the seats perfectly in square in their locations, using the suitable drift.
Let head cool down and then grind the valve seats, the jointing line of ducts and seat and grind the valves.
Changing valve guides
Change valve guides as follows.
Heat head gradually and evenly in an oven up to
200 °C
.
Remove original valve guides using a suitable tool (see diagram).
Let them cool down and check seat state and size.
Choose adequate valve guides to obtain an interference fit to head of
0.022-0.051
mm. Spare valve guides are
available with
0.03, 0.06
and
0.09
mm
outer diameter oversize and come complete with retaining ring.
Heat up head again and cool down the new valve guides in dry ice.
Lubricate seats in the head and install the valve guides. Push the retaining ring fully home into the head using the
same drift as for removal.
Allow the head to cool down and hone inner bore.
Valve guide bore diameter:
8.00-8.022
mm.
file:///C|/Documents%20and%20Settings/F4i/My...anual/wsm/usa/Mon695_MY07_N_4D9_00.65.1.html (12 of 23) [10/7/2008 8:45:45 PM]