Cylinder head - inspection (page 2 of 2)

Refit

1. Clean mating faces of cylinder head and block. Clean oil and coolant passages. De-carbonise piston crowns and cylinder head if necessary.
2. Clean dowel, dowel holes and cylinder head bolt holes.

3. Check that oil feed restrictor in cylinder block is clear and fitted below cylinder block top face.
4. Clean and dry cylinder head bolts.

5. Measure length of cylinder head bolts. If any bolt exceeds the maximum length A, then all bolts must be renewed A = 243.41 mm.

CAUTION: Do not remove washers from bolts, keep bolts in their fitted order.

6. Ensure dowels are fitted to cylinder block and fit new cylinder head gasket, dry, over the dowels.
7. Remove timing pin 18G 1523 and using crankshaft pulley bolt, rotate crankshaft anti-clockwise until numbers 1 and 4 pistons are approximately 25 mm below cylinder block top face.

CAUTION: Ensure timing belt is not trapped as crankshaft is rotated.

8. Temporarily fit camshaft timing gear and rotate camshaft until timing gear drive pin is at 2 o’clock position.
9. Use clean engine oil to lubricate the thread and under side of each cylinder head bolt head

CAUTION: Do not lubricate under side of washers.

10. Fit cylinder head onto cylinder block, carefully locating onto dowels.
11. Fit cylinder head bolts in their original fitted order, do not drop bolts into cylinder block.

12. Tighten cylinder head bolts progressively in sequence shown, using following procedure. i. Tighten all bolts to 30 Nm. ii. Tighten all bolts to 65 Nm. Using a felt tip pen, mark position of radial mark on each bolt head. iii. Turn each bolt through 90°. iv. Turn each bolt through a further 90°.

CAUTION: Ensure correct tightening sequence is followed for all four tightening stages.