Check that the piston pins rotate freely in the bosses of the corresponding new pistons.
Use centering mandrel C 13 and mounting mandrel A13 from the kit (Mot. 574-22) for piston pins without collar.
Use centering mandrel C 13 and mounting mandrel A13-01 from the kit (Mot. 574-24) for flanged piston pins.
Install piston pin (1) on mounting frame (2) and screw the centering mandrel (3) before tightening the assembly.
Loosen the mounting mandrel a quarter of a turn.