ZEST BOLT Service Manual

ENGINE 1.3 QUADRAJET (75PS) 36 3A.1.2.2.6 CYLINDER HEAD BLOCK A. HEAD GASKET CORRECTION BASED ON CYLINDER HEAD BLOCK PLANARITY . 1. Clean any residues of the old gasket from the lower cylinder head plane. 2. Clean traces of the oil gasket of f the mating surfaces between the cylinder head and the cylinder head extension. 3. Check that the planarity of the lower cylinder head plane corresponds to the recommended value of 0.1mm. 4. If the lower surface flatness of the lower cylinder head is not within specified values, grind from the nominal head height and then fit a new gasket with the number of notches determined as described below. a. The head may be leveled to 0.1 m if sat rting from a gasket with 0 notches and using a new gasket with 1 notch. b. The head may be leveled to 0.2 m if sat rting from a gasket with 0 notches and using a new gasket with 2 notches. c. The head may be leveled to 0.1 m if sat rting from a gasket with 1 notch and using a new gasket with 2 notches. NOTE Q The above process is not used to determine the Cylinder head gasket but by assuming that the starting gasket is determined based on the piston projection (given under head “Selection of Cylinder head gasket”) it may be further altered based on the leveling done to the cylinder head. Q When within limit conditions (head gasket with 2 notches before leveling), the lower head surface cannot be leveled. 5. The nominal height of the cylinder head is 105.5 mm+/- 0.05.