TM-9-2815-200-35 Maintenance Manual for AVDS-1790-2M AVDS-1790-2A and AVDS-1790-2AM Engines Download
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Remove 1. Remove pressure oil pickup cover (A). 2. Remove oil pan pipe plug (B). Install 1. Install oil pan pipe plug (B). 2. Install pressure oil pickup cover (A). b. c. Cleaning. Refer to paragraph 6-2. Inspection. Refer to paragraph 6-3. The oil pan gasket flange must not be out-of flat by more than 0.004-inch per foot. d. Repair. Refer to paragraph 6-4e and table 6-21 when replacing studs. Refer to paragraph 6- 4 C for general welding instructions and (1) and (2), below, for specific information on welding repair of the oil pan. (1) Oil pan bottom surfaces. The welding repair of chips, cracks, and the replacement of metal is permissible in the oil pan to prevent oil leakage between compartments or from cast passages. Repair cracks that do not extend over 12 inches lengthwise and when there are not more than three cracks running crosswise within a six inch area. (2) Oil pan baffles. Sections of missing metal in oil baffles may be replaced, but care must be exercised when replacing baffles im- mediately adjacent to and attaching to the oil pan outer walls at the engine mounting bosses. Mount bosses may also be repaired if chipped or cracked. After welding repair of the oil pan, leak test compartments and cast passages. Pressure test is not necessary. Figure 6-97. Removing or installing pressure oil pickup cover. Table 6-21. Oil Pan Standard and Oversize Stud Identification Fig. No. B-7 B-7 B-8 B-8 Ref No. 21 24 17 14 Set ting height 2-13 / 16 1-21 / 32 25 / 32 1-11 / 32 No. req’d 2 2 8 56 Note. Refer to figure 6-1 for oversize stud identification. 6-96 Stud size and length 5/16-18(3/4) x5/ 16(23/32) x 3-9/32 (STD) (0.003 in. OS) (0.007 in. OS) 5/16-18(15/16) x5/ 16-24(25/32) x 2-1/8 (STD) (0.003 in. OS) (0.007 in. OS) (0.012in. OS) 5/ 16-18(3/4) x5/ 16-24(19/32) x 1-7/16 (STD) (0.003 in. OS) (0.007 in. OS) (0.012 in. OS) 3/8-16(15/16) x3/ 8-24(13/16) x 2-3/32 (STD) (0.003 in. OS) (0.007 in. OS) e. Assembly. Refer to figures 6-97 through 6- 88.