3022454 - 1036G camshaft (1) in top heads (2)

CONSTRUCTION FEATURES

CAMSHAFTS

Cast iron, tempered and hardened on the cams.The exhaust camshaft is driven directly by the toothed belt and transmits power to the inlet camshaft through a a pair of straight toothed gears.The exhaust camshaft also drives the vacuum unit that is fitted on the gears side.

TAPPETS

There is a hydraulic tappet for each valve activated by a rocker arm, in turn, moved by the camshaft.The rocker arms are designed to prevent serious damage to the other engine components if the timing belt breaks or comes off; in effect, on account of their special design the absorb the stresses caused through the contact between the valves and the pistons.