2400993 - 1016E14 single cylinder head valve guides - replace during operation 1016e10

Removing ( Refitting ) 1. Remove valve guides (1a) using tool (1b).

	Name	Country
1b	Extractor	1.860.994.000

Refitting ( Removing ) Measure the valve guide seats and check they are within the specified limits.

	Measurement		Value
-	Valve guide bore diameter in cylinder head (mm)		9.959 - 9.989

If necessary, ream the valve seat.Check the measurement of the new valve guide.Make a note of the measurment of the valve seat after reaming.Valve guides are supplied as spares with the diameters shown below.

	Measurement		Value
-	Valve guide outer diameter (mm)		10.010 - 10.030

The interference fit between valve guides and seats on the cylinder head is as follows.

	Measurement		Value
-	Interference between valve guides- seats (mm)		0.041 ÷ 0.051

Before fitting the new valve guides, the cylinder head has to be heated to a temperature of around 80° - 100 °C.1. Fit the new valve guides using the tool illustrated.

	Name	Country
1	Extractor	1.860.994.000

If the valve guides have undergone slight deformation during assembly, ream the inner surfaces using a reamer of appropriate size.Measure valve guide bore afer dressing and clearance between bore and valve; check they are within specified values.

	Measurement		Value
-	Valve guide inner diameter (mm)		6.022 - 6.040

	Measurement		Value
-	Clearance between inlet and exhaust valves - valve guides (mm)		0.14 ÷ 0.082