TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download

TM 9-2815-220-34 oil pump drive impeller (43) from scavenge oil pump housing. Remove pressure and scavenge oil pump housing spacer (41) from pressure oil pump housing (39) and remove oil pump drive gear shaft (27) from spacer. Remove oil pump impeller drive shaft (29) and pressure oil pump driven impeller (40) from pressure oil pump housing (39). Remove four oil pump intake screen machine bolts (49) and flal washers (3) and remove pressure oil pump intake screen (36) from pressure oil pump housing (39). 3-77. Inspection 3-76. Cleaning Refer to paragraph 3-36. g. �f. mnenl No Lel!r pth of impeller 3-42 h  j s t Length of impelle e 3-42 e-h k k-j r 3.Ê r·S w w-t Impellers and shafʦ 3.Ê I 3-Ê a 1-a n f 3-42 n-f q n s ol not al tnd or 1blt. Refer to paragraph 3-37. Inspect parts against limits specified in the repair standards (table 3-15). 3-78. Repair Refer to paragraph 3-38d and oil pump stud iden- tification (table 3·12). Refer to paragraph 3-39 when replacing helical-coil and screw thread inserts. Replace damaged studs and parts that do not con- form to limits specified In repair standards (table 3- 15). Table 3·15. Oil mp Repair Standard4 Poi nt or S iua nd fit We• r m�&!umen\ of new pal llm! l Level pump o.o 0.ὲ 0.P55 Preure pump 2.434 2.4340 2.4345 avenge pump 3. 3.020 3.25 Make-up pump 0.21> 0.212 0.2155 Dril'e and driven level pump 0.P 0.P10 0.7Ϟ End play between impellers 04L 0.2L 0AL and impeller housings with housings correctly installed Drive and driven pressure 2.42 2.42Z 2.4275 pump End play betwn impelle O.OL 0.&0L 0.OL and impeller housings with housin correctly installed Drive and driven scavenge 3.0410 3.$4 3.$05 pump End play tween impelle O. ꝃꝃL 0.ZL O.OlꝃL and impeller housings with housings correctly aem- bled. Drive and driven make-up 0.21 0.2110 0.Ñ5 pump. End play tween impelle 0.4L 0.2L 0.<L and impeller housings with housings correctly sem· bled. Outside diameter of level 0.ϗ5 0.b40 0.ϗ2 pump end of preure oil pump impeller drive shaft. Lnsidc diameter of aring in- 0.♺ 0.⚄ 0.ϛ0 stalled in pressure pump end cover. Fil of shaft in bearing. O.ꝃlOL 0."5L 0.'L Outside diameter of preure 1.1315 1.134 1.1312 pump and avenge pump housing spacer bearing sur- faces on oil pump impeller drive shaft. lnside diameter of bearing in- +Ŋ 1.1340 1.1350 stalled in oil pressure pump housing. Fit of impeller drive shaft in O.ꝃlOL 0.25L 0.'L preure housing aring. Inside diameter of aring in- 1.1Ŋ 1.1340 1.132 stalled in pressure and scavenge pump housing spar. Fil of impeller drive shaft in O.ꝃlOL 0.5L 0.'L spacer aring. 3-111