Cylinder head - inspection

Cylinder head - inspection

1. Check cylinder head for warping, across centre and from corner to corner. Maximum warping = 0.10 mm

CAUTION: Cylinder heads may not be refaced, replace head assembly if warping exceeds figure given.

Refit

1. Clean mating face of cylinder head and block using gasket removal spray and a plastic scraper.
2. Ensure oil and coolant passages are clean.

3. Check that oil feed restrictor in cylinder block is clear and fitted below cylinder block top face.
4. Clean dowels, dowel holes and cylinder head bolt holes in cylinder block.
5. Clean and dry cylinder head bolts.
6. Measure overall length of cylinder head bolts. If any bolt exceeds the maximum length of 243.41 mm, then all bolts must be renewed.

CAUTION: Do not remove washers from bolts. Keep bolts in their original fitted order.

7. Ensure dowels are fitted to cylinder block and fit new cylinder head gasket, dry, over the dowels.
8. Temporarily fit crankshaft pulley bolt. 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. Do not remove bolt at this stage.

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

9. Check that camshaft timing gear drive pin is at 2 o’clock position, if necessary, temporarily fit camshaft gear and rotate camshaft until pin is positioned; remove gear.
10. Use clean engine oil to lubricate the thread and under side of each bolt head.

CAUTION: Do not lubricate under side of washers.