1028H14 PISTON CONNECTING ROD SET - R R - Alfa - 147 - eLearn

3025996 - 1028H14 piston connecting rod set - r r

) 1. Undo the bolt connecting the crankcase sump to the intermediate shaft support.2. Undo the front and rear bolts (2a) for the crankcase sump using the tool (2b).

	Name	Country
2b	Key	1.822.145.000

3. Undo he side bolts (3a) for the crankcase sump using the tool (3b).

	Name	Country
3b	Key	1.822.144.000

4. Using the tool (4a), cut the sealant and remove the crankcase sump (4b).

	Name	Country
4a	Blade	1.870.718.001

1. Undo the bolts (1a) and remove the engine oil inlet (1b).2. Remove the seal.

1. Fit the tool and rotate the crankshaft until the cylinder concerned is at B.D.C.

	Name	Country
1	Flange	1.820.618.000

2. Undo bolts (2a) and remove big end bearing caps (2b) complete with bearing shells (2c).3. Remove the connecting rod-piston assembly (3a), complete with half-bearing (3b).Proceed in the same way with the removal of the pistons and connecting rods for the remaining cylinders.

Refitting ( Removing

) Rotate the cylinder block through 90° on the overhauling stand.Rotate the crankshaft using the tool fitted previously until the cylinder concerned is at B.D.C.Choose the connecting rod bearing halves as described in - 1004E20 engine - dismantle and re-build following operation 1004e10 - wash and check dismantled parts - re-fit cylinder head and oil sump - does not include repairs to cylinder head and auxiliary unit .1. Fit the connecting rod-piston assembly (1a), complete with half-bearing, using the tool (1b).

The piston - connecting rod assemblies are fitted in the cylinder block/crankcase so that the explosion chamber in the piston is facing the inlet side.

2. Fit the cap (2a) complete with half-bearing and fix it using the bolts (2b) without tightening them.

The connecting rod caps are fitted with the number stamped on them facing the same way as the number stamped on the connecting rod (inlet side).

Work in the same way when refitting the pistons and connecting rods for the remaining cylinders.

Rotate the cylinder block through 90° on the overhauling stand.1. Tighten the big end bearing cap bolts (1a) to the recommended torque; use tool (1b) for angular tightening.

	Fastening	Component	Ø	Value(daNm)
1a	Bolt	BIG END BEARING CAPS	M9	2.4 ÷ 2.6 + 60

	Name	Country
1b	Protractor	1.860.942.000

Remove the tool.

	Name	Country
-	Flange	1.820.618.000

Fit the engine oil inlet complete with gasket and secure using the bolts.Clean the contact surfaces of crankcase sump and cylinder block.Apply silicone sealant around the edge of the crankcase sump.Fit the crankcase sump.Tighten the side bolts for the crankcase sump to torque using the tool.

	Fastening	Component	Ø	Value(daNm)
-	Side bolt	OIL SUMP	M6	(Engine crankcase side) 0.8 - 1.0

	Name	Country
-	Key	1.822.144.000

Tighten the front and rear bolts for the crankcase sump to torque using the tool.

	Fastening	Component	Ø	Value(daNm)
-	Front and rear bolt	OIL SUMP	M8	(Engine crankcase side) 2.1 - 2.6

	Name	Country
-	Key	1.822.145.000

Tighten the bolt securing the oil sump to the intermediate shaft support.