1028H14 PISTON CONNECTING ROD SET - R R - Fiat - IDEA - eLearn

2400998 - 1028H14 piston connecting rod set - r r

) 1. Undo the bolts (1a) and remove the air conditioning compressor (1b).

1. Undo the bolts (1a) and remove the air conditioning compressor support (1b).

Rotate the engine through 180° on the overhauling stand.1. Undo the bolts (1a) and remove the connecting rod caps (1b).2. Remove the lower big end half-bearings.

1. Remove the connecting rod-piston assemblies.2. Remove the upper connecting rod half-bearings.

Refitting ( Removing

) Clean the components removed thoroughly and check their condition through a visual inspection.Lubricate all the components for the mechanical couplings using engine oil. Check the crankshaft bearings, taking into account that no adjustment operations should be carried out on half-bearings. If there are signs of grooves or seizing, they must be replaced. 1. Fit the tool.

	Name	Country
1	Flange	1.860.815.000

Rotate the crankshaft using the tool fitted previously.The piston-connecting rod assemblies are fitted according to the following references.1. Piston category (1a) and arrow (1b) indicating timing side.2. Area where number of cylinder bore/liner to which the connecting rod belongs is stamped.3. Drain (3b) on the piston skirt must be aligned with oil spray (3b).

1. Place the connecting rod-piston assemblies (1a) complete with upper connecting rod half-bearings using the tool (1b) back in their housings.

The big end bearing shells can be identified as follows:

upper big end bearing shells, dark coloured three metal connecting rod side;
lower big end bearing shells, light coloured two metal cap side with an opening.

Do not swap the position of the big end bearing shells.

Rotate the engine through 180° on the overhauling stand.1. Fit the calibrated wire (Plastigage) to measure the big end bearing clearance.

1. Place the big end caps (1a) complete with half-bearings (1b) back in their housings.

The big end bearing shells can be identified as follows:

upper big end bearing shells, dark coloured three metal connecting rod side;
lower big end bearing shells, light coloured two metal cap side with an opening.

Do not swap the position of the big end bearing shells.

2. Tighten the bolts (2a) fixing the connecting rod caps to the recommended torque using the angular tightening tool (2b).

	Fastening	Component	Ø	Value(daNm)
2a	Bolt	BIG END BEARING CAPS	M8	1.9 ÷ 2.1 + 40? ± 2?

	Name	Country
2b	Protractor	1.860.942.000

Undo the bolts and remove the connecting rod caps complete with half-bearings fitted previously.1. Using a suitable graduate measuring instrument (1a), measure the clearance shown by the calibrated wire (1b).

Check one journal at a time without moving the crankshaft.

	Measurement		Value
1b	Big end bearings (mm)		0.030 ÷ 0.062

If the reading is not within the specified range, replace the half-bearings with new ones of the appropriate size and grade.

Proceed with the final fitting of the connecting rod caps tightening the fixing bolts following the previous instructions.Remove the tool.

	Name	Country
-	Flange	1.860.815.000

1. Place the air conditioning compressor mounting (1a) back in its housing and fix it tightening the bolts (1b) to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
1b	Bolt	COMPRESSOR MOUNT (AC)	M8	(Upper and lower engine crankcase side) 2.3 ÷ 2.8

1. Place the air conditioning compressor (1a) back in its housing and fix it tightening the bolts (1b) to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
1b	Bolt	AIR CONDITIONER ASSEMBLY COMPRESSOR	M8	(Support side) 2.3 ÷ 2.8