192 F3B ENGINE T RAKKER E URO 4/5 Figure 107 Figure 109 49025 32618 Removing the piston gudgeon pin (1). If removal is difficult, use an appropriate drift. Measuring the diameter of the pin (1) using a micrometer (2). Measuring piston diameter Figure 108 Conditions for correct pin-piston coupling 71714 Using a micrometer (2), measure the diameter of the piston (1) to determine the assembly clearance. The diameter has to be measured at the value shown. Figure 110 49026 Lubricatethe pin (1) and its seats on the hubs inside the piston with engine oil. The pin has to go into the piston by lightly pressing it with the fingers and must not drop out.
Base q November2006 Print 603.93.641