1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL - Fiat - STILO - eLearn

3363555 - 1016E10 SINGLE CYLINDER HEAD, REMOVED - OVERHAUL

) 1. Fit the support tool (1a) on the cylinder head (1b) and place the assembly in a vice.

	Description	Code	Function
1a	Support	1.860.470.000	Service cylinder head

Mark the fitting position of the camshaft caps.

1. Undo the fixing bolts (1a) and remove the camshaft caps (1b).2. Undo the fixing bolts (2a) and remove the camshaft cap (2b) on the inlet side oil seal.3. Undo the fixing bolts (3a) and remove the camshaft cap (3b) on the exhaust side oil seal.

1. Remove the oil seals.

Mark the fitting position of the camshafts.

2. Remove the inlet camshafts (2a) and the exhaust camshafts (2b).

1. Undo the spark plugs and remove them.

Remove the cylinder head-cylinder block/crankcase locating bushes.1. Fit the valve retaining tool and secure it using suitable bolts.

	Description	Code	Function
1	Support	1.860.804.001	Service cylinder head

1. Remove the cups.

1. Position the tool (1a) fitted with an adaptor (1b) and compress the valve spring.

	Description	Code	Function
1a	Lever	1.860.644.001	Removing/Refitting valves

	Description	Code	Function
1b	Adapator	1.870.881.000	Removing/Refitting valves

2. Remove the cotters.3. Remove the shim.4. Remove the spring.5. Remove the oil seal using the special tool.

	Description	Code	Function
-	Caliper	1.870.894.000	Removing-Refitting valve guide oil seal

Proceed in a similar way and remove the remaining cotters, shims, springs and oil seals.Undo the fixing bolts and remove the valve retaining tool.6. Remove the valves.

	Description	Code	Function
-	Support	1.860.804.001	Service cylinder head

Op. 1016E14 VALVE GUIDES IN SINGLE CYLINDER HEAD - REPLACE DURING OP. 1016E101. Undo the inlet side studs.2. Remove the cylinder head (2a) from the vice, undo the fixing nuts (2b) and remove the support tool (2c).

	Description	Code	Function
2c	Support	1.860.470.000	Service cylinder head

3. Undo the exhaust side studs.

Refitting ( Removing

) De-carbonize and clean the valve seats and ducts.Clean any residues of the gasket from the lower cylinder head plane.Check that the flatness of the lower cylinder head plane corresponds to the recommended values.

	Subject	Value
-	Cylinder head planarity	-

The lower cylinder head plane cannot be reground.

If the planarity of the lower cylinder head plane is not within the recommended values, replace the cylinder head.1. Tighten the exhaust side studs (1a) and the inlet side studs (1b) to the cylinder head.2. Fit the support tool (1a) on the cylinder head (2b) and place the assembly in a vice.

	Description	Code	Function
2a	Support	1.860.470.000	Service cylinder head

De-carbonize the valves removing the combustion residues.Check that the valves do not show signs of scoring or seizing.1. Check that the width of the valve bore in the head is within the recommended values.

	Subject	Value
1	Inlet valve seat width (mm)	1.0 - 1.4

	Subject	Value
1	Exhaust valve seat width (mm)	1.4 - 1.8

2. Check that the angle of the valve bore in the head is within the recommended values.

	Subject	Value
2	Valve seat angle	90° 30’

If the values are not within the recommended limits, replace the cylinder head.3. Check that the diameter of the valve head corresponds to the recommended figures.

	Subject	Value
3	Inlet valve head diameter (mm)	30.7 - 30.8

	Subject	Value
3	Exhaust valve head diameter (mm)	27.1 - 27.2

4. Check that the angle of the valve seat on the valve is within the recommended values.

	Subject	Value
4	Valve head angle	90° 30’

5. Check that the diameter of the valve stem corresponds to the recommended figures.

	Subject	Value
5	Inlet valve stem diameter (mm)	4.955 - 4.970

	Subject	Value
5	Exhaust valve stem diameter (mm)	4.935 - 4.950

	Subject	Value
5	Inlet valve stem diameter (oversize 0.075) (mm)	5.030 - 5.045

	Subject	Value
5	Exhaust valve stem diameter (oversize 0.075) (mm)	5.010 - 5.025

	Subject	Value
5	Inlet valve stem diameter (oversize 0.150) (mm)	5.105 - 5.120

	Subject	Value
5	Exhaust valve stem diameter (oversize 0.150) (mm)	5.085 - 5.100

If the values are not within the recommended limits, replace the valves.

Op. 1016E14 VALVE GUIDES IN SINGLE CYLINDER HEAD - REPLACE DURING OP. 1016E10Fit the valves in their seats.1. Fit the valve retaining tool and secure it using suitable bolts.

	Description	Code	Function
1	Support	1.860.804.001	Service cylinder head

1. Fit the oil seal using the special tool.

	Description	Code	Function
-	Caliper	1.870.894.000	Removing-Refitting valve guide oil seal

2. Fit the springs.3. Fit the shim.4. Position the tool (4a) fitted with an adaptor (4b) and compress the valve spring.

	Description	Code	Function
1a	Lever	1.860.644.001	Removing/Refitting valves

	Description	Code	Function
1b	Adapator	1.870.881.000	Removing/Refitting valves

5. Fit the cotters.Proceed in a similar way and fit the remaining oil seals, springs, shims and cotters.Undo the fixing bolts and remove the valve retaining tool.

	Description	Code	Function
-	Support	1.860.804.001	Service cylinder head

1. Fit the cups.

Lubricate the contact surfaces of the camshafts.1. Fit the inlet side camshaft (1a) and the exhaust side camshaft (1b) in the fitting position marked on their removal.2. Fit the oil seals after having lubricated the inner seal lip.3. Fit the camshaft caps in the fitting position marked.4. Tighten the fixing bolts to the recommended torque.

	Value daNm	Fastening	Component	Ø
4	0.8	Bolt	-	-

1. Rotate the camshaft.2. Using a feeler gauge (2a) measure the clearance between the tappets (2b) and the cams (2c).

	Subject	Value
-	Inlet tappet clearance (mm)	0.21 - 0.29

	Subject	Value
-	Exhaust tappet clearance (mm)	0.27 - 0.35

If the tappet clearance is not within the recommended tolerance, remove the caps and the camshaft involved and replace the cups selecting the size according to the required clearance.

	Subject	Value
-	Cup classification	Size (mm)
	04	3.030 - 3.050
	08	3.070 - 3.090
	12	3.110 - 3.130
	16	3.150 - 3.170
	20	3.190 - 3.210
	24x	3.230 - 3.244
	27x	3.258 - 3.272
	30x	3.286 - 3.300
	32x	3.314 - 3.328
	35x	3.342 - 3.356
	38x	3.370 - 3.384
	41x	3.398 - 3.412
	43x	3.426 - 3.440
	47	3.460 - 3.480
	51	3.500 - 3.520
	55	3.540 - 3.560
	59	3.580 - 3.600

After having replaced the cups, carry out the check on the clearance again and refit the camshaft and caps as described previously.1. Remove the cylinder head (1a) from the vice, undo the fixing nuts (1b) and remove the support tool (1c).

	Description	Code	Function
1c	Support	1.860.470.000	Service cylinder head