1028H14 PISTON CONNECTING ROD SET - R R - Alfa - 156 - eLearn

3239091 - 1028h14 piston connecting rod set - r r

) 1. Undo the bolts (1a) and remove the plates (1b) 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. Remove the crankcase sump.

To release the crankcase sump, tap it gently with a a resin hammer, then use a screwdriver to lever on the special projections at the side of the crankcase sump.

1. Undo the bolts (1a) and remove the engine oil inlet (1b).2. Remove the O-ring.3. Fit the tool and rotate the crankshaft until the cylinder concerned is at B.D.C.

	Name	Country
3	Flange	1.820.618.000

4. Undo the bolts (4a) and remove the big end bearing cap (4b).5. Remove the bottom big end bearing shell.6. Remove the connecting rod - piston assembly.7. Remove the upper connecting rod half-bearing.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 piston - connecting rod assembly (1a), complete with bearing shell, using the tool (1b).

The connecting rod - piston assemblies are fitted in the cylinder block/crankcase with the combustion chamber in the piston 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 O-Ring and fix it using the bolts.Apply the recommended sealant to the entire perimeter of the crankcase sump.

	Type	Component	Name	Qty.
-	Silicon sealant	ENGINE REAR MOUNT GASKETS	Dow Corning 7091	-

Fit the crankcase sump.Tighten the side bolts for the crankcase sump to torque using the tool.

	Fastening	Component	Ø	Value(daNm)
-	Side bolts	OIL SUMP	M6	(engine crankcase side) 0.7 ÷ 0.9

	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

Fit the plates connecting the crankcase sump to the intermediate shaft support and fix it using the bolts.