70 F2B ENGINE T RAKKER E URO 4/5 Figure 96 109108 MAIN DATA OF PISTON, RINGS AND PIN X = 0,6 0,15 mm The dimension is measured on a 111 mm 540842 Piston rings Figure 99 Figure 97 The compression ring (2) of the 1є cavity is trapezoidal. Clearance k X y between the sealing ring and its housing is measured by placing the piston (1) with its ring in thecylinder liner (3), so that the sealing ring is half-projected out of the cylinder liner. 3513 16552 Check the thickness of the piston ring (2) using a micrometer (1). Figure 98 Figure 100 Check the gap between the ends ofthe sealing rings (1),using a filler gauge (2), entered in the cylinder liner (3).
If thedistance between ends is lower or higher than thevalue required, replace the rings. 36134 16552 Check the clearance between the rings (2) and the relative piston housings (1) using a filler gauge (3). Base q November 2006 Print 603.93.641