e. Wash the piston in solvent , and dry it e. Laver le piston dans du solvant et bien le with compressed air. sdcher _ l'air comprimd. f . Measure the outside diameter of the f. Mesurer le diam_tre exterieur du piston piston at the piston skirt, la jupe. The measurement should be made at a Prendre la mesure fi un point situ_ fi point 10 mm (0.39 in) above the bottom 10 mm au-dessus du bord inferieur. edge of the piston . P lace the micr o meter Appliquer le micrometre perpendicu- at a right angle to the piston pin. lairement fi l'axe du piston.
The maximum piston diameter subtract- Le diam_tre maximum du piston sous- ed from the minimum cylinder diameter trait du diam_tre minimum du cylindre gives the piston c l earance . I f the clear- donne le jeu. Si lejeu est hors tolerance, ance is beyond tolerance , hone the honer le cylindre pour le ramener dansles cylinder to tolerance or bore it to the tolerances, ou alors le realeser fi la pro- next oversize and install an oversized chaine cote de reparation et monter un piston, piston correspondant. © z Piston clearance: Jue de piston Minimum ..... 0.045 mm (0 . 0018 in) Minimum ................... 0,045 mm Maximum .... 0.050 mm (0.0020 in) Maximum ...................
0,050 mm Piston oversize: Pistons en cote de reparations: 70.25 mm (2.766 in) 70,25 mm 70.50 mm (2.776 in) 70,50 mm i I. 10 mm (0.39 in) 1. 10mm 3. Piston rings 3. Segments a. Check the rings for scoring. If any severe a. Voir si les segments sont rayes. En cas de scratches are noticed , replace the rings as rayures profondes, remplacer le jeu de a set. segments complet. b. Measure the ring end gap in the un- b. Mesurer la fente des segments non in- installed rings. If it is beyond tolerance, stall,s. Si elle est hors tolerance, rem- rep l ace the rings as a set. placer le jeu de segments complet. 2 -1 1