Note. If you change the gudgeon pin, you must also replace the connecting rod small end.
Gudgeon pin-piston coupling
Coupling clearance at assembly: 0.004-0.012 mm/0.00015-0.00047 in.
Maximum wear limit: 0.025 mm/0.00098 in.
It must be possible to insert the lubricated gudgeon pin in the piston by hand but it must not drop out due to this pressure (see diagram).
