TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
Page 314 of 779
(2) To detect dimensional changes caused by welding repair, precisely measure crankcase at several key positions depending upon the location of the repair. For repair to side walls, measure the positions outlined in steps (a) through (d). (a) Across the main bearing cap support web machined surfaces (B, fig. 6-14). (b) Across the inside of the crankcase at the junction of the side wall and the oil pan rail (D). (c) From oil pan rail face to main bearing cap support face (C). (d) From cylinder mounting deck to crankshaft bearing support bore centerline using a suitable plug or bore in the crankcase bearing bore (A). This measurement shall be within 8.377-8.369 inch. (e) Oil pan rail shall be flat within 0.010- inch when all four corners are on the same plane. (3) For repair in other locations, measure in the appropriate locations to insure that critical dimensions are held. Record dimensions for future use. Figure 6-14. Points of measurement for checking crankcase. 6-20