1024A10 CRANK SHAFT - R + R WITH ENGINE REMOVED - CHECK MAIN AND CONNECTING ROD BEARINGAND REPLACE IF NECESSARY - Fiat - MULTIPLA - eLearn

2892344 - 1024A10 crank shaft - r + r with engine removed - check main and connecting rod bearingand replace if necessary

) - 1020D17 engind front cover - r r1. Fit the tool.

	Name	Country
1	Counter-torque	1.860.846.000

2. Undo the bolts (2a) and remove the clutch (2b).

1. Undo the bolts (1a) and remove the flywheel (1b).Remove the tool.

	Name	Country
-	Counter-torque	1.860.846.000

1. Undo the bolts (1a) and remove the crankcase rear cover (1b) with the oil seal integrated.2. Fit the tool.

	Name	Country
4	Flange	1.860.815.000

Rotate the crankshaft using the tool fitted previously until the pistons of cylinders no. 1 and no. 4 are at B.D.C.1. Undo the bolts (1a) and remove the connecting rod caps (1b) for cylinders 1 and 4.2. Remove the lower connecting rod half bearings for cylinders no. 1 and no. 4.Proceed in the same way to remove the connecting rod caps and bearing halves for cylinders 2 and 3.3. Undo the bolts (3a) and remove the bearing caps (3b).4. Remove the lower main journal half-bearings.5. Remove the crankshaft.6. Remove the upper connecting rod half-bearings.7. Remove the upper main journal half-bearings.8. Remove the thrust washers from the 3rd main bearing.

Refitting ( Removing

) Visually inspect the condition of the main journal and connecting rod half-bearings and, if necessary, replace them.

For the selection of the half-bearings, refer to the instructions in the engine overhaul procedure, see Op. 1004E20

Check that the thickness of the main journal half-bearings is within the recommended values; if this is not the case, replace them. if this is not the case, replace them.

	Measurement		Value
-	Thickness (mm)	Category B	1.839 - 1.843
Category C	1.842 - 1.846
Classe A	1.836 - 1.840

Check that the thickness of the connecting rod half-bearings is within the recommended values; if this is not the case, replace them. if this is not the case, replace them.

	Measurement		Value
-	Connecting rod half bearing thickness (mm)	Category B	1.530 ÷ 1.534
Category C	1.533 ÷ 1.537
Classe A	1.527 ÷ 1.531

Fit the upper main journal half-bearings in the cylinder block/crankcase.Fit the crankshaft.1. Apply calibrated wire (plastigage) to measure main journal backlash.

Check one journal at a time without moving the crankshaft.

1. Fit the main journal caps complete with half-bearings.

The bearing caps have progressive reference notches (from zero to four starting from the front of the engine) and one point which define cap fitting position.

1. Tighten the bearing cap bolts (1a) to torque using the angular tightening tool (1b).

	Fastening	Component	Ø	Value(daNm)
1a	Bolt	MAIN BEARING CAPS	M12	2.4 - 2.6 + 100°

	Name	Country
1b	Protractor	1.860.942.000

1. Remove the main bearing caps and measure journal backlash using a graduated measuring device.

If the reading is not within the specified range, replace the main bearing halves with new bearing halves of appropriate size and category.

Fit the thrust washers on the 3rd main bearing.1. Fit the main journal caps complete with half-bearings.

The bearing caps have progressive reference notches (from zero to four starting from the front of the engine) and one point which define cap fitting position.

1. Tighten the bolts (1a) for the connecting rod caps to torque, using the angular tightening tool (1b).

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

	Name	Country
1b	Protractor	1.860.619.000

Fit the upper connecting rod half-bearings on the connecting rods.1. Apply calibrated wire (plastigage) to measure crankpin backlash.

Check one pin at a time without turning the crankshaft.

Fit the connecting rod caps with bearing halves.

The connecting rod caps are fitted so that the number stamped on them is facing the same side as the one stamped on the big end (inlet side).

1. Tighten bolts (1a) to torque using angular tightening tool (1b).

	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

1. Measure the clearance between pin and bearings using a measuring device. Then retighten the connecting rod cap bolts to torque as described previously.

Fit the upper connecting rod half-bearings on the connecting rods.Rotate the crankshaft using the tool fitted previously until cylinders no. 1 and no. 4 are at B.D.C.Fit the connecting rod caps and bearing halves for cylinders 1 and 4 and screw in the bolts without tightening.

The connecting rod caps are fitted so that the number stamped on them is facing the same side as the one stamped on the big end (inlet side).

Do the same to fit the big end bearing caps of cylinders no. 2 and no. 3.1. Tighten the bolts (1a) for the connecting rod caps to torque, using the angular tightening tool (1b).

	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	1.860.815.000

1. Fit the crankcase rear cover.2. Tighten the crankcase rear cover bolts to torque.

	Fastening	Component	Ø	Value(daNm)
2	Bolt	FLYWHEEL SIDE COVER	M6	0.8 - 1.0

Fit the tool.

	Name	Country
-	Counter-torque	1.860.846.000

Fit the flywheel and tighten the bolts to torque.

	Fastening	Component	Ø	Value(daNm)
-	Bolt	FLYWHEEL	M12	13.6 - 16.8

Remove the tool.

	Name	Country
-	Counter-torque	1.860.846.000

- 1020D17 engind front cover - r r