TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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I TM 9-2815-220-34 �I TA021975 I Insert, screw thread 2 Intake manifold stud 3 Insert, screw lhrcad 6 Insert, scnw thread 7 Insert, screw t l m:ad 8 Co1•cr 11 Stud, plain l 2 Stud, plain 13 Cylinder 4 Stud, oil cooler supporl frame S lnscrl, screw thread 9 Insert, screw thread 10 Pin, strnight, headless 14 Nut, extended washer 15 Preformed packing Fiutt»eS-1!11. <:yli11dl'1'<t11d hew! c111cl associated parts -explodecl viaw. 3-71. Inspection a. Valve Gu'ics. Inspect valve guides (6 and 36, fig. 3-190), for cracks, galling, erosion, or scuffing. Check guides against limits specified in the repair standards (table 3-13). b. Valve Seat Inserts. Inspect inserts for pitted surfaces. If inserts are cracked, loose, or damaged beyond repair, the cylinder must be replaced. Check valve seat contact by lightly bluing face of insert with Prussian blue and placing a new valve into position on valve insert. Rotate vnlve one-half tu on insert and check valve seat for Prussian blue contact. Valve seat must show contact all around (360°), as indicated by Prussian blue trans- fer, to quality as a serviceable insert. Inserts that do not show 360° contact must be marked for re- pair. If valve seat inserts can be made serviceable by grinding; repair as outlined in paragraph 3-72. c. Cyl'inder Bore Dimensions. Standard and versize cylinder assemblies are identified by the steel stamped part number located on the cooling Change 3 3·99