Cylinder head assemblies: valves - rocker arms
file:///D|/Manuales/Para%20recolocar/MOTOS/DUCATI/DUCATI/M796/wsm/EN/M796_ABS_11_9_4D.70.1.html[11/12/2015 18:40:46]
Checking the valves
Check that the stem and the valve seat contact surface are in good condition. There must be no pitting, cracks,
deformations or signs of wear.
Warning
The valves cannot be ground.
Perform the following checks: measure the diameter of the valve stem (D) at various heights along the portion that runs
in the valve guide.
Check that valve head band (at 45° to valve head top face) is concentric to the valve stem as follows: place the valve on
a V block, set a dial gauge at right angles to the head and rotate the valve.
-Service limit: 0.03 mm.
Checking the valve seats
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