Piston, Replace Notice: Pushing out of the piston pin is not permitted. If the piston, the piston pin or the con-rod defective, all above-mentioned parts must be replaced.
 Remove, Disconnect Remove piston with con-rod (1) - see operation "Piston with Con-rod, Remove and Install".
 Install, Connect Coat con-rod eye and upper part of the con-rod shaft with thermocolour pencil. The green colouring turns black when the required assembly temperature is reached. The coloured mark (arrow) is not permitted to discolour over the entire length, but only up to the start of the con-rod shaft. Heat new con-rod at upper con-rod eye with heater plate. Assembly temperature: 280 ° C / 536 ° F to max. 320 ° C / 608 ° F. | 
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 Important! Installation position: beads (arrows) at con-rod point to flattening (arrow) of the piston pin eye. Notice: Firmly seated piston pin cannot be pressed further. Perform assembly quickly.
 Assemble Con-rod (1), piston pin, piston (2). Use Assembly KM-634. Place new piston pin on handle and fasten with screw piece. Insert new piston pin up to stop in piston. Remove handle and screw piece.
Install, Connect Install piston with con-rod - see operation "Piston with Con-rod, Remove and Install". | 
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