TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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Fi+111·r J.9,v, Uemo1>i11g or i11slc1/li11g c1Y+1kshl dampcra11d oil Jiltc1· Jio11si11g. the piston of the cylinder being removed to top center. Make certain each piston is properly positioned before attempting cy- linder removal. e. Tu engine on stand so right bank cylinder assemblies arc in a vertical (upright) position. Ro- tal{' crankshaft using splined wrench Part No. 10882747 (fig. 2-42) and observe when connecting rod has raised piston to top center. Remove the remaining two nuts (fig. 3-103) from the right cy- lincler assembly. e. I. Tum cngfoe on stand so right bank cylinder assemblies arc in a vertical (upright) position. In- stall power takeoff drive coupling on spur gear- shaft and secul'e with flat washer and self-locking nut (fig. 2-148.2). Install holding bar and puller ( I TM 9-2815-220-34 11 l � P REFOl J CO 1 P A C K I NG ' I J'ig11re3-99. Fro11/ em/ oj era 11kcasc assembly shull'illg loc1ttion+ oil trc++er tube pre[ol'lllfli packi11gs. assembly on coupling (fig. 2-148.2) Rotate crankshaft and observe when connecting rod has raised the piston to top center. Remove the re- maining two nuts (fig. 3-103) from the l'ight cylin- der assembly. NOTE Do not remove Lhe nuts holding the left cylinder assemblies (fig. 3-103) to crank- case until left cylinders have been rotated to an upright position r removal. f. Attach a suitable lifting sling to top of cylinder assembly using two 7/16 x 1114 inch capscrews (fig. 3-104). Carefully lift cylinder assembly until cylin- der is just above piston pin bore. Install crankcase protector Part No. 10882790 on cylinder mounting pad studs and secure with two cylinder base nuts and remove cylinder assembly. Replaceable cam- shaft bearing halves should remain with the cylin- der. NOTE Cl'ankcasc protector Part No. 10882790 is installed on cylinder pad before removing cylinder assembly from piston. The pro- tector will guard against damage to cylin- der pad and mounting studs i n the event connecting rods should strike the pad as cylinder is lifted from piston. NOTE When carbon deposits make l'emoval of piston pin difficult, tap end of piston pin wiLh soft faced hammer. g. Remove piston pin retaining rings and piston pin (fig. 3-105) from piston and remove piston from connecting rod. Reinstall piston pin in piston after it is removed from the connecting rod. NOTE Cylinder No. 6R piston is at top center at Change 1 3-43