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Piston, Replace
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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".
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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.
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Caution
Installation position: Bead (arrow) on con-rod points to
flattened area (arrow) of the piston pin eye.
Note: Firmly seated
piston pin cannot be pressed further. Perform assembly quickly.
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Assemble
Con-rod (1), piston pin, piston (2).
Slide new piston pin to stop in piston with guide drift.
Install
Install piston with con-rod – see operation "Piston with
Con-rod, Remove and Install".
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