244000646 - 1016E14 SINGLE CYLINDER HEAD VALVE GUIDES - REPLACE DURING OPERATION 1016E10

Removing ( Refitting ) 1. Turnn the tool to extract the valve guides for a length of 20 mm.

	Description	Code	Function
.	Drift	1.860.994.000	Extracting/fitting valve guides

1. Remove the valve guides (1a) using the tool (1b).

	Description	Code	Function
1b	Drift	1.860.994.000	Extracting/fitting valve guides

Refitting ( Removing ) - Check that the outer diameter of the valve guides to be fitted corresponds to the recommended figures.

	Subject	Value
.	VALVE GUIDES	mm
-	Outer diameter	10.028 - 10.039

	Subject	Value
.	CYLINDER HEAD VALVE GUIDES (ALL)	mm
-	Outer diameter oversize	0.05
-	Outer diameter oversize	0.10
-	Outer diameter oversize	0.25

- Check that the interference between the seat and the valve guide corresponds to the recommended figures; if this is not the case, ream the seat until the correct interference is obtained using oversize valve guides.

The valve guide seats should be reamed so that valve guides with the same oversize are used.

	Subject	Value
.	VALVE GUIDES	mm
-	Head-valve guide interference	0.028 - 0.059

- The cylinder head must be heated before fitting new valve guides.1. Fit the new valve guides (1a) using the tools (1b).

	Description	Code	Function
1b	Drift	1.860.994.000	Extracting/fitting valve guides

- If the valve guides are slightly distorted whilst fitting, ream the inner surface using a suitable size reamer.

	Subject	Value
.	VALVE GUIDES	mm
-	Inner diameter	6.023 - 6.038

- Check that the clearance between the valve and the valve guide corresponds to the recommended value.

	Subject	Value
.	VALVE GUIDES	mm
-	Inlet valve-valve guide clearance	0.023 - 0.053
-	Exhaust valve-valve guide clearance	0.033 - 0.063

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

	Description	Code	Function
1b	Drift	1.860.395.000	Valve guide extraction

Refitting ( Removing ) - Check that the outer diameter of the valve guides to be fitted corresponds to the recommended figures.

	Subject	Value
.	Cylinder head valve guides (all)	mm
-	Outer diameter	13,012 - 13,025

	Subject	Value
.	Cylinder head valve guides (all)	mm
-	Outer diameter oversize	0,05
-	Outer diameter oversize	0,10
-	Outer diameter oversize	0,20

- Check that the interference between the seat and the valve guide corresponds to the recommended figures; if this is not the case, ream the seat until the correct interference is obtained using oversize valve guides.

The valve guide seats should be reamed so that valve guides with the same oversize are used.

	Subject	Value
.	Cylinder head valve guides (all)	mm
-	Head-valve guide interference	0,027 - 0,075

1. Fit the new valve guides (1a) using the tool (1b) and the drift (1c).

	Description	Code	Function
1b	Drift	1.860.395.000	Valve guide fitting

	Description	Code	Function
1c	Drift	1.870.679.000	Drift for fitting valve guides

- Ream the valve guide inner diameter to the recommended figure.

	Subject	Value
.	Cylinder head valve guides (all)	mm
-	Inner diameter	8,022 - 8,040

1. Check that the clearance between the valve and the valve guide corresponds to the recommended value.

	Subject	Value
.	Cylinder head valve guides (all)	mm
-	Valve-valve guide clearance	0,023 - 9,953