TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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2-30.lntercylinder Fuel Return Lines, Valve Rocker Arms, Rocker Arm Shafts or Valve Clearance Adjusting Screws et. Removal. (1) Remove cooling fan vanes, cooling fans, en- gine uppel' covers and cooling fan shroud. Refer to paragraph 2-2la. (2) Remove oil coolers. Refer to paragraph 2-27a. (3) Remove oil cooler support frame. Refer to paragraph 2-2. (4) Remove fuel injector Lubes. Refer to para- graph 2-21a (7) through (10). NOTE All rocker arms, shafts and adjusting screws are removed nnd instnlled in the same manner. For instructional purposes the removal of only one is described. (5) Remove two machine bolts (1, fig. 2-84), sup- port (2) and access cover (3). Remove and discard gask et (4). Disconnect fuel injector nozzle fuel re- turn hose nut (5) at nozzle connector (6) and re- move and retain fuel return hose (7). Remove noz- zle connector bolt (8) and nozzle connector (6). Re- I Machine bolt 2 Support 3 Access cover 4 Gasket 5 Retu hose nut 6 Nozzle connector 7 Fuel retu hose 8 Nozzle connector bolt 9 Gasket 10 Assembled washer bolt 11 Cylinder head shroud plate Figure fl·84. Removing or i11stalli11gfuel injector 11ozzle retur1t hose, tube co1111ector a11d cylinder head shroud plate. TM 9-2815-220·34 move and discard two gaskets (9). Remove four assembled washer bolts (10) and remove two cylin- der head shroud plates (11). (6) Loosen and remove fuel injector nozzle i and holder assembly as shown in figure 2-85. Remove and discard flat washer (gasket) (fig. 2-86) and preformed packing. CROWFOOT ATTACHMENT Figure 2·85. Loose11ingf11el injector 11ozzlr and holder assembly usi11g crowfoot ultacme11t. NOTE stubbo cases, when the nozzle is heavily carboned, remove the fuel inlet co1ector from the nozzle body and remove the nozzle body, Remove the nozzle retainer using wrench socket, Part No. 11610171. Tu the shaft of puller assemb ly , Part No. 12275805 counter- clockwise to the end of t110 thread. Install puller over capnut and rest on nozzle insert. p ul ler shaft clockwise and engage capnut threads unt puller shaft bottoms. Using open end wrench, tu pulJer plain nut clockwise (fig. 2-85.1) to remove capnut and associated parts. Change 3 2-70.4.1