602 Piston Assy 

The piston has a semi floated Wrist Pin with a brass cap at one side.

The Wrist Pin Cap protrudes ¼” into the Wrist Pin and is secured with a brass pin which runs through both Pin and Cap and is fastened with a centre punch at each side. Make sure that Pin and Cap are securely connected, otherwise the pin can get loose from the cap, resulting in the pin damaging the cylinder at the pin’s side away from the cap.   

The piston has 4 rows of 7/32” holes; the top row has 5 holes, the upper middle 3, the lower middle 6 and the bottom row 5.
The rows of holes run around the piston approximately 180° at the left front end.
The total number of holes is 19.

The pistons from engine # 1108 and # 2173 appeared to be different; both are shown

 Ben Geutskens                                                                  May 2015