DS21 & DS21M / DS19A & DS19MA Repair Manual — Page 606

c) Assemble the pistons and connecting rods. Oil the gudgeon pin, the small end bush and the gudgeon pin bores in the piston. Place a in one of the grooves. Although the pins are a push fit in the connecting rod and piston, heat the pistons to about 60°C (in an oil bath for preference). Position the pistons in relation to the connecting rods,