Remove
Remove piston with con-rod – see operation "Piston with Con-rod, Remove and Install".
Before removing the piston pin (2) note the installation position of the con-rod (5) to the piston (4) – bead (6) on con-rod faces in the opposite direction to the arrow (3) on the piston head.
Remove retaining ring (1) from the piston boss with suitable tool – slide piston pin from piston and con-rod by hand.
Install
Coat piston pin with engine oil.
Press piston pin by hand into piston and con-rod until the ring groove is freely accessible.
Note position of the con-rod to the piston – bead on the con-rod faces in the opposite direction to the arrow on the piston head – see illus. F 9818.
Insert retaining ring (1) in ring groove of piston.
Note length of ring gap – ring gap must be within the region of dimension I.
Dimension I = max. 30°.
Install piston with con-rod – see operation "Piston with Con-rod, Remove and Install".
