Cylinder Head Gasket Removal

Remove the 32 No. 1 valve rocker arms from the cylinder head.

HINT:

Arrange the removed parts in the correct order.

Remove the 32 valve lash adjusters from the cylinder head.

HINT:

Arrange the removed parts in the correct order.

Remove the 32 valve stem caps from the cylinder head.

HINT:

Arrange the removed parts in the correct order.

Uniformly loosen and remove the 2 bolts in the sequence shown in the illustration.

Using a 10 mm bi-hexagon wrench, uniformly loosen the 10 cylinder head bolts in the sequence shown in the illustration. Remove the 10 cylinder head bolts and plate washers.

NOTICE:

1. Be careful not to drop washers into the cylinder head.
   
2. Head warpage or cracking could result from removing bolts in an incorrect order.
   

HINT:

Be sure to arrange the removed parts for each installation position separately.

Remove the cylinder head LH.

Uniformly loosen and remove the 2 bolts in the sequence shown in the illustration.

Using a 10 mm bi-hexagon wrench, uniformly loosen the 10 cylinder head bolts in the sequence shown in the illustration. Remove the 10 cylinder head bolts and plate washers.

NOTICE:

1. Be careful not to drop washers into the cylinder head.
   
2. Head warpage or cracking could result from removing bolts in an incorrect order.
   

HINT:

Be sure to arrange the removed parts for each installation position separately.

Remove the cylinder head.

Using a vernier caliper, measure the length of the cylinder head set bolt from the seat to the end.

Standard length:

141.3 to 142.7 mm (5.56 to 5.62 in.)

Maximum length:

143.7 mm (5.66 in.)

Using a vernier caliper, measure the diameter of the elongated threads around the point indicated in the illustration.

Distance:

Item	Specified Condition
Intake side bolt	103 mm (4.06 in.)
Exhaust side bolt	108 mm (4.25 in.)

Standard diameter:

10.85 to 11.00 mm (0.427 to 0.433 in.)

Minimum diameter:

10.60 mm (0.417 in.)

HINT:

If a visual check reveals no excessively thin areas, check the area of the bolt around the point indicated in the illustration and find the area that has the smallest diameter.

Using a precision straightedge and feeler gauge, measure the warpage of the contact surfaces of the cylinder block and manifold.

Standard Warpage:

Item	Specified Condition
Cylinder block side	0.05 mm (0.00197 in.)
Intake manifold side	0.08 mm (0.00315 in.)
Exhaust manifold side	0.05 mm (0.00197 in.)

Maximum warpage:

0.10 mm (0.00394 in.)

Using a dye penetrant, check the intake ports, exhaust ports and cylinder head surface for cracks.
If cracked, replace the cylinder head sub-assembly.