TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Figure 6-51. Cylinder identifying groove. (1) Cylinder barrel. Refer to paragraph 6- 32. Ultrasonic Inspection of Cylinder Barrel, for inspection procedures of the cylinder barrel. (2) Cylinder bore. Inspect cylinder bore for deep scratches, scoring, or metal pickup. Inspect joint between cylinder head and cylinder barrel for pitting or erosion. Carefully run finger over cylinder wall to check for ring ridge. (3) Cylinder bore dimensions. Cylinder bores taper slightly at the head end (a room temperature). The tapered section expands, and is essentially straight at operating temperature. Check bore dimensions, as described in (a) through (d), below, against limits specified in overhaul standards (table 6-15). (a) With cylinder at room temperature, take two cylinder bore measurements at top of ring travel. Measure diameter approximately parallel to line of valves, and then take cross 6-55