Maserati 4200cc F136 UC - F136 UD

Engine Overhaul

Assembly Procedure

Rotate the engine in clockwise direction, positioning the intake cam just before the opening position, with the hydraulic tappet still in the rest position. Reset the dial gauge measuring the shift of the intake tappet in this position.

Rotate the crankshaft until 15° after TDC, corresponding to a strokeof 1.75 mm of the piston. Check whether the downstroke of the tappet (which began before the TDC), consequently the opening of the intake valve, is 0.59±0.08 mm. If under such circumstances the measured values do not fall within the tolerance range, make sure that the crankshaft is locked into place and then slacken the timing variator fastening screw and rotate the intake camshaft until the preset intake valve lift value is met. Double check the timing values. Use a torque wrench to tighten the timing variator fastening screw to a torque of

50 ± 1.5 Nm + 85°±1°. Double check the timing values.

Maserati Academy

101