2753375 - 1028H54 piston/cylinder liner - r r

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

NameCountry
1bTool for Extracting/Fitting1.860.183.000
1. Fit the connecting rod-piston assembly on the tool (1a) then, using a hydraulic press and a suitable drift, extract the pin (1b) from the piston.

NameCountry
1aSupport1.860.986.000
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).
Fit the gudgeon pin in the direction shown by the arrow on the piston crown.

NameCountry
1bSupport1.860.986.000

NameCountry
1cSupport1.860.986.000
1. Test the gudgeon pin fit locking the connecting rod-piston assembly in the supporting tool (1a) 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.

NameCountry
1aSupport1.895.615.000
Fit the seals on the piston using the special tool.

NameCountry
-Tool for Extracting/Fitting1.860.183.000
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°.