1028H54 PISTON/CYLINDER LINER - R R - Fiat - IDEA - eLearn

2400999 - 1028H54 piston/cylinder liner - r r

) 1. Remove the seals (1a) from the piston using the tool (1b).

	Name	Country
1b	Tool for Extracting/Fitting	1.860.183.000

1. To remove the pin from the piston, tool (1a) must be modified to reduce diameter (1b) by 1.3 mm as shown in the figure.

	Name	Country
1a	Support	1.860.986.000

1. Position the connecting rod - piston assembly on mount (1a), then use a hydraulic press and the tool modified previously to remove pin (1b) from the piston.

	Name	Country
1a	Support	1.860.986.000

Reassembling ( Dismantling

) Heat the connecting rods in an oven to a temperature of around 240 °C to allow the fitting of the gudgeon pin. 1. Join the connecting rods to the pistons so that the gudgeon pin offset is facing the number stamped on the big end.

1. Fit the gudgeon pin (1a) using the tool (1b) working in the vice with the connecting rod supported by the tool (1c).

	Name	Country
1b	Support	1.860.986.000

	Name	Country
1c	Support	1.860.986.000

1. Test the gudgeon pin fit locking the connecting rod-piston assembly (1a) in the supporting tool (1b) and positioning a dial gauge for measuring the movement of the pin. 2. Act on the tool nut using a torque wrench set at a torque of 1.27 daNm equal to an axial load of 392.4 daN. The matching is correct if, when the action of the torque wrench is over and the nut is returned to its original simple contact position, the pointer on the dial gauge returns to zero. If this is not the case, replace the connecting rod.

	Name	Country
1b	Support	1.895.615.000

Fit the seals on the piston using the special tool.

	Name	Country
-	Tool for Extracting/Fitting	1.860.183.000

The second seal is fitted with the word TOP facing upwards.

When the fitting is completed, position the notches in the seals so that they are not aligned with the the gudgeon pin axis and are offset from one another by 120°.