3308481 - 1036D camshaft (1) in cylinder heads (2)

CAMSHAFTS

The camshafts are made from hardened and tempered steel alloy and rotate on four supports.The camshafts are driven by a toothed belt with a moving tensioner which automatically adjusts and maintains the belt tension.The shaft acts directly on the inlet valves and, via rods and rocker armsm, on the exhaust valves.The inlet tappets are the "light" mechanical type consisting of a tempered steel alloy cup in direct contact with the cam.The operation of the cups is transmitted to the valve by means of a carbo-nitrided and tempered steel cap, used for adjusting the valve clearance.The timing on the exhaust takes place by means of a cast iron cup which, when in contact with the cam, transmits the movement ot the valve via a rod - rocker arm system.The adjustment of the exhaust valve clearance takes place using a special tool via a screw which acts directly on the tappet rod.