3363571 - 1016E38 single cylinder head or (one) l or r, removed - grinding

Clean the residues of the old gasket from the lower surface of the cylinder head.Check that the planarity of the lower cylinder head surface is within the recommended values.

	Measurement		Value
-	Flatness of bottom surface (mm)		0.1

If the planarity measured is not within the specified values, the cylinder head can be refaced until the minimum permissible value is reached. If the value measured is within the tolerance, but close to the minimum permissible value, the operation of refacing the head could alter the functional characteristics of the actual cylinder head because it could cause an excessive increase in the compression ratio with consequent detonation.

Reface the lower surface of the cylinder head.1. After regrinding the cylinder head, use a dial gauge (1a) and tool (1b) to check that the minimum height between the reference plane inside the combustion chamber and the cylinder head surface is within the recommended value.

	Measurement		Value
1a	Min. permissible height after refacing between combustion chamber/bottom surface cylinder head (mm)		12.5

	Name	Country
1b	Dial gauge mounting	1.870.404.000

Also check the volume of all the combustion chambers following the procedure described below.1. Temporarily fit the valves and spark plugs and use a graduated test tube containing a known quantity of engine oil.2. Rest a glass sheet with four holes corresponding to the combustion chambers on the cylinder head.3. Complete the filling of the combustion chamber, taking care that no oil comes out of the combustion chamber.Wait for around 10 minutes to allow the decantation of the oil.Measure the quantity of oil remaining in the test tube and then calculate the difference between it and the quantity of oil used initially when the test tube was full; this value corresponds to the volume of the chamber.Check that this figure corresponds to the recommended values, or else the cylinder head has to be replaced.

	Measurement		Value
-	Volume of combustion chamber in cylinder head (cm)		33.35