Note. 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
Remove piston with con-rod (1) – see operation "Piston with Con-rod, Remove and Install".
Install
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.
Caution
Installation position: beads (arrows) at con-rod point to flattening (arrow) of the piston pin eye.
Note. Firmly seated piston pin cannot be pressed further. Perform assembly quickly.
Assemble
Con-rod (1), piston pin, piston (2). Place new piston pin on Handle KM-634-8 and fasten with Vice KM-634-9. Drive new piston pin to stop in piston. Remove Handle KM-634-8 and Vice KM-634-9.
Install
Install piston with con-rod – see operation "Piston with Con-rod, Remove and Install".
