Move the piston of the cylinder being checked to TDC upon combustion stage: in this condition, all valves are closed and the
camshafts come in rest position and, therefore, free to rotate; check the valve lift.
Fit tool (G) no.
88765.1690 on the head: support (S) of tool no.
88765.1690 with the intake indication must be positioned on the exhaust side whereas support (T) of tool no.
88765.1690 with the exhaust indication must be positioned on the intake side.
Seat the plate (E) and tighten the screws (F).
Lock dial gauge (V) into the seat support (T) and position probe (R) against the face of the closing shim.
Set the dial gauge to zero when the valve is fully closed.
Rotate the intake camshaft so as to allow the intake valves to lift fully.
Check on the dial gauge that the measured value corresponds to the prescribed one.
Repeat the same operation for the exhaust valves, using dial gauge (V) in support seat (S) and probe (U).