TM 10-3930-669-34 VISUAL INSPECTION Inspect suspect piston(s) for damage. (a) If piston(s) is damaged, replace piston(s) or engine (Para 3-13 or 3-3). (b) If  pistons  are  not  damaged,  pistons are OK VISUAL INSPECTION (1) Inspect   inside   of   suspect   cylinder(s)   and engine block for scoring. (a) If   there   is   scoring,   piston   rings   are faulty.  Replace  piston  rings  (Para  3- 13)     and     hone     engine     block     and cylinder(s)     (Para 3-7) or replace engine (Para 3-3). (b) If there is no scoring, piston rings are OK. (2) Install cylinder(s) (Para 3-7). (3) Install valves and springs (Para 3-6). (4) Install cylinder head(s) (Para 3-5). (5) Install engine cowling (TM 10-3930-669-10). (6) Install cab (TM 10-3930-669-20). 2-21