Pistons - Disassembly

note
It is not necessary to remove the connecting rods from the crankshaft.
  1. Remove the liner, using the frame from service tool T3880315, and service tool T3880101 (see Cylinder Liner - Removal).
  2. Remove and discard the gudgeon pin circlip from one side of the piston.
    3. Graphic from Disassembly (cape.svg)

    Removing the Gudgeon Pin Circlip

  3. Remove the gudgeon pin by pushing the pin through the piston and rod toward the side from which the circlip was removed.
    4. caution
    Never force the gudgeon pin through the piston. This may cause damage to the piston which may also damage the liner when assembled.
    note
    If the gudgeon pin is found to be tight in the piston, check the piston for a witness mark caused by the circlip. Carefully remove the mark to allow the pin to be removed.
  4. Piston rings must be removed from the piston using hand pressure only. Do not overextend the piston rings during removal.
    5. note
    If the piston rings are to be reused, note the orientation of the oil control rings prior to removal.