Refitting

Refitting

1. Position cylinder head gasket with the wording "ALTO" facing the operator. The cylinder head gasket is ASTADUR type. This type of gasket is made from a special material which undergoes a process of polymerisation while the engine is running and therefore hardens considerably during use.
   The following conditions must be satisfied in order to ensure polymerisation occurs:
   • keep the gasket sealed in its plastic bag and take out only shortly before fitting;
   • do not oil the gasket or contaminate with oil. Ensure cylinder head and crankcase surfaces are thoroughly clean.
   Then fit the cylinder head and tighten retaining screws to a torque of 2 daNm. Observe the tightening pattern shown in the figure.
2. Use wrench 1852154000 to retighten retaining bolts to a torque of 4 daNm, following the same tightening order described previously.
3. Use wrench 1852154000 with angle wrench 1895897000 to tighten through a further angle of 180° in two different stages(90°+ 90°), following the same tightening pattern.

Refit parts removed previously by reversing disassembly instructions. Fit timing and auxiliary belts and tension as described in the previous paragraphs.