Valve seat turning

VALVE SEAT TURNING

• If necessary, turn the valve seats using suitable equipment.

• After machining, grind each valve in its seat as follows:

• coat contact surfaces "A" and "B" of the valve and its housing with abrasive paste (SIPAL AREXONS Carborasilicum for valves or an equivalent product);
• lubricate the valve stem with engine oil;
• attach the lower surface of the valve mushroom to the suction grip of a pneumatic grinder;
• insert the valve in its valve guide and grind;
• after grinding, accurately clean both the valve and the seat.

CAMSHAFTS AND BEARINGS

• Assemble the camshaft caps according to the numbers on them and tighten the fastening screws to the specified torque.

1. Check that the diameter of the camshaft pins is within the specified limits.