TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
Page 320 of 532
TM 9-2815-220-34 2 1 '' - 10! 3 I I t6� & I I 1 1 � r s ' 8 TA 126100 I I. Preformed packing 2. Preformed packing 1. Rubber strip 8. Self-lking nut 13. Fial wuher 14. Seal 3. O pump trmsrer leveling tu assembly 9. O pan press ure compartment baffle I 0. Machi no boll 15. Seal 16. Machine bolt 4. Capsc�ew 5. Se 11. l.ockwasher 17. Loasher 6. Rubr strip 12. Hexon capscrew 18. Pressure comp31tment bracket u 1·201. Oil pump sembly and aocla1td ns. a. Cut lking wire and remove oil pump pressure relief valve cap {S3, fig. 3-202). Separate pressure relief valve {30), outer compression spring (32), and inner compression spring (31) from valve cap. Remove capscrew {34) and flat washer {35) Crom pump mounting flange. Remove and discard two preformed a packings (1, fig. 3-43), seal (14) and two seals (15). Remove two self-locking nuts (2, fig. 8-42), two flat washers (3) attaching oil pump gear cover (4) to oil pump. Remove three self-lking nuts (2) and Oat washers (3). Remove three bolts (1), and remove gear cover (4). Straighten tabs on washer key (8) and remove plain nut (7) and washer key (8) from oil pump drive gear shaft {27). Remove oil pump drive cluster gear (10) and thrust washer bearing (12) from oil pump drive gear shaft {27). Position a brass r or . drift between scavenge oil pump driven and drive im- pellers (* and 43) through opening in scavenge oil pump housing to hold impellers stationary. Remove self-lking nut (5) and remove oil pump impeller 3·110 Change 2 drive spur gear (6). Remove oil pump gear plate {13). Remove remaining three self-lking nuts (2) and flat washers (3) securing pressure oil pump housing cover (14) to pressure oil pump housing {39). Remove housing cover {14). Remove level oil pump driven im- peller (16) from oil pump driven impeller shaft. Remove level oil pump drive impeller {17) from oil pump impeller drive shaft. b. Remove lk plate bolt {19) securing lk plate {18) t.o scavenge oil pump housing cover asmbly. Remove lk plate. Remove six self-lking nuts (2) and flat washers (3) securing cover assembly (21) to scavenge oil pump housing (44). Remove cover assem- bly. Remove two driven make-up oil pump impellers (47) and one make-up oil pump drive impeller (2) from scavenge oil pump housing {44). Remove make- up oil pump drive shaft (0) and oil pump driven im- peller shaft {). Remove scavenge oil pump housing {44) from pressure oil pump housing {39). Remove scavenge oil pump driven impeller (*) and scavenge ) )