TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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NOTE During assembly, the addition or removal of spring adjusting shims (to obtain the correct gage pressure reading on the nozzle tester) may require various shim com· binations available in shim set 5702674. Although each nozzle assembly pressure reading may vary, experience will indicate the approximate shim(s) thickness required to make up pressure differences. The nozzle assembly must be completely assembled, torque tightened and checked again on the nozzle tester to assure proper spacer combination and pressure reading. This predure may have to be repeated several · times before achieving a satisfac- tory reading. (1) Install nozzle valve (12, fig. 2-133) in nozzle by (11). Install a new preformed packing (5) on noz· zle body (1). Install upper spring seat (4), shim(s), and seat spacer (2) on one end of nozzle spring (15). Install lower spring seat (14) on other end of spring (15) and install assembled spring (seats, shims and spacers) in I nozzle body (1 ). Install nozzle spacer (13), nozzle assembly (9), nozzle retainer (6) and retainer spring (16). Install capnut (8). Center nozzle body . capnut opening and torque tighten to 65 pound-feet. Install tube connector (17). (2) Test assembled fuel injector nozzle and holder assembly as outlined in Testing. It. /n"tallation. (1) Install fuel injector nozzle and holder assem- blies, and fuel injector tubes (para 2-30b and 2-2lb). (2) Install cꝏling fan shroud, engine upper covers, cꝏling fans and cꝏling fan vanes (para 2· 2lb). 2-49. Engine Electrical Wiring Harness, Generator Cable or Starter Cables NOTE This paragraph contains instructions for the complete removal or installation of the engine electrical wiring harness, generator cable, starter cables and associated brackets and clamps. To remove any one cable or harnes s indiv idually, the predure is similar except for the removal of the engine disconnect cable connectors from the mounting brackets (fig. 2-144) and (fig. 2-137) by removing four machine screws, lkwashers and hexagon nuts. a. Model A VDS-l 790-2C ( 1) Removal (a) Remove capscrew and lockwasher ( l, fig. 2-134) and remove starter cable loop clamp (2). Remove starter low voltage protective module TM 9-2815-220·34 cable connector (3). Remove hexagon nut and lockwasher (4) and disconnect two starter ground cables (5) and ground strap (6). Jnstall hexagon nut and lockwasher on starter terminal. Remove cap- screw nnd two Oat washers (7) and remove ground strap. NOTE Model AVDS- J 790-2C engines have two ground straps (6, fig. 2-134). (b) Remove hexagon nut and lockwasher (8) and disconnect two starter cables (9) and starter low voltage protective module cable terminal lug (I 0). Install hexagon nut and lockwasher on battery terminal. (c) Remove machine screw ( 11) and discon- nect starter low voltage protective module cable terminal lug. 1 Capsew and lockwasher 2amp 3 Electrical cable connector 4 Hexagon nut and lockwasher S Starter ble 6 Ground stup 7 Capscrew and n3t washer 8 Hexagon nut and lockwasher 9 Starter ble 10 Terminal lug 11 Machine screw TA265657 I Fisure 2-134. Removing or iral/ing 1tarter electrical cable. (d) Remove self-lking nut and remove starter cable lꝏp clamp (fig. 2-135). Remove capscrew and lkwasher and remove starter cable lꝏp clamp. Remove capscrew and lkwasher and remove wiring harness lꝏp clamp. Change 3 2·85