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

2753371 - 1016E10 single cylinder head, removed - overhaul

) Carry out op. 1036B141. Remove the camshaft tappet cases with shims.

1. Fit valve retainer (1a) beneath the cylinder head.

	Name	Country
1a	Stand	1.860.749.000

1. Remove cotters (1a) using tool (1b).2. Remove the upper valve shims.3. Remove the valve springs.

	Name	Country
1b	Tool	1.860.644.000

1. Using pliers (1a), remove the oil seals (1b) from the valve guides.2. Remove the lower valve shims.

	Name	Country
1a	Extractor	1.860.989.000

Remove the valve retaining tool fitted previously and remove the valves.

	Name	Country
-	Stand	1.860.749.000

1. Undo the nut (1a) and remove the mobile timing drive belt tensioner (1b).2. Remove the spark plugs.

1. Undo the bolts (1a) and remove the thermostat (1b) with gasket.

Reassembling ( Dismantling

) De-carbonize and clean the valve seats and ducts.Clean the residues of the old gasket from the lower surface of the cylinder head.Check cylinder head planarity and level the lower cylinder head surface if necessary; it is permissible to remove 0.1 mm of material over and above the minimum cylinder head height (factory dimension).

	Measurement		Value
-	Cylinder head height (construction figure) (mm)		126.5 +/- 0.35

After levelling, check that combustion chamber volume is with specified limits as follows.1. Fit valves and spark plugs provisionally. Take a graduated burette containing a known amount 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 burette and then calculate the difference between it and the quantity of oil used initially when the burette 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
-	Combustion chamber volume (cm)		23.41

If combustion chamber volume is not as specified, remove material from the arrowed points.

Check that the valve stem does not show signs of scoring or seizing.Check that the diameter of the valve stems is within the recommended values; if this is not the case, replace the worn valves.

	Measurement		Value
-	Inlet and exhaust valve stem diameter (mm)		6.982 - 7.000

Check that the thickness of the cylindrical part of the valve head is within the recommended values.

	Measurement		Value
-	Valve cylindrical section thickness (mm)		1

Check that the diameter of the valve head is within the recommended values; if this is not the case, replace the valves.

	Measurement		Value
-	Inlet valve external diameter (mm)		31.20 - 31.50

	Measurement		Value
-	Exhaust valve external diameter (mm)		27.20 - 27.50

1. Check valve guide bore and valve clearance are within the recommended values or else the valve guide has to be replaced.If necessary, replace the valve guides referring to op. 1016E14.

	Measurement		Value
-	Valve guide inner diameter (mm)		7.022 - 7.040

	Measurement		Value
-	Valve stem - valve guide diameter (mm)		0.022 - 0.058

Grind the valve seats if the valves and valve guides are replaced.

	Measurement		Value
-	Upper section taper "" (-)		75°

	Measurement		Value
-	Contact band with valve taper "b" (-)		44° 30'

	Measurement		Value
-	Lower band taper"c" (-)		20°

	Measurement		Value
-	Contact band width with valve "I" (mm)		c.a. 2

Clean the valve seats thoroughly when the operation is complete.

Use the appropriate tool to check that the characteristics of the springs are within the recommended values; if this is not the case, replace parts that have yielded.

	Measurement		Value
-	Spring height (mm)		31
	Under load (daN)	21.2 - 23.8

	Measurement		Value
-	Spring height (mm)		21.5
	Under load (daN)	61.4 - 65.5

Check that the diameter of the camshaft journals is within the recommended values; if this is not the case, replace the worn camshaft.

	Measurement		Value
-	Side bearing diameter (mm)		24.000 - 24.015

	Measurement		Value
-	Centre bearing diameter (mm)		23.500 - 23.515

Check that the nominal lift of the camshaft cams is within the recommended values; if this is not the case, replace the worn camshat.

	Measurement		Value
-	Nominal cam lift (mm)		9.5

Check that the diameter of the camshaft tappet casing housings are within the recommended values; if this is not the case, replace the worn parts.

	Measurement		Value
-	Outer diameter (mm)		34.975 - 34.995

Check that the diameter of the camshaft tappet casing housings are within the recommended values; If this is not the case, replace the cylinder head.

	Measurement		Value
-	Tappet casing housing diameter (mm)		35.000 - 35.025

Fit the thermostat, complete with a new gasket, and fix it tightening the bolts to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
-	Bolt	THERMOSTAT	M6 x 1	1

Fit the spark plugs and tighten them to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
-	-	SPARK PLUGS	M14 x 1.5	2.7

Fit the timing moving tensioner and fix it using the nut without tightening it.1. Fit flywheel retaining tool (1a) after positioning the valves in their seats.

	Name	Country
1a	Stand	1.860.749.000

1. Fit the lower valve shim.2. Fit the valve guide oil seal (2a) using tool (2b).

	Name	Country
2b	Fitting tool	1.860.313.000

Refit the valve springs, upper valve shims and cotters using the same tools as used for the dismantling.

	Name	Country
-	Tool	1.860.644.000

Remove the valve retainer removed previously.

	Name	Country
-	Stand	1.860.749.000

Fit the camshaft tappet cases with shims. - 1036B14 overhead camshaft - r r on vehicle - with cylinder head removed