77
Fig. 21
Fig. 22
Fig. 23
e) PISTON RINGS AND PIN
Remove rings from piston and clean all carbon from ring
grooves with the aid of a piece of old piston ring (Fig 21).
Check piston for damage. Piston wear and ovality should
not exceed 0,15 mm (.006”). Refer to table for dimensions.
With a feeler gauge, measure ring clearance in groove
(Fig 22). This should not exceed 0,15 mm (.006”).
Insert rings into cylinder bore pushing down about
25 mm or 1” with the piston top. Measure ring gap, replace
rings if gap exceeds 0,5 mm (0.02”) (Fig 23).
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