184000819 - 1016E14 SINGLE CYLINDER HEAD VALVE GUIDES - REPLACE DURING OPERATION 1016E10

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

NameCountry
1bExtractor1.860.994.000
Refitting ( Removing ) Measure the valve guide seats and check they are within the specified limits.

MeasurementValue
-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.

MeasurementValue
-Valve guide outer diameter (mm)10.010 - 10.030
The interference fit between valve guides and seats on the cylinder head is as follows.

MeasurementValue
-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.

NameCountry
1Extractor1.860.994.000
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.

MeasurementValue
-Valve guide inner diameter (mm)6.022 - 6.040

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