TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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TM 9-2815-220-34 Figure 2-85.1. Removing fuel injector 11ozzle cap11111 will/ puller assembl. Figure -86. Rcm11i11g or i11stulli11g fuel injector nozzle and huldel' assembly. (7) Remove two self-locking nuts (1, fig. 2-87), and lift two air deflectors (2) from cylinder fins and rocker arm covers. It is not necessary to remove deflectors. (8) Remove two outer machine screws (3) and loosen four machine screws (4). Remove two ma- chine bolts (5) and two washers (6) and remove aess cover (7). Remove and discard gasket (8). 2-70.4.2 Change 3 I Self-lking nul 2 Air deflector 3 Outer machine screw 4 Machine screw 5 Machine bolt 6 Washer 7 Access coYer 8 Gasket Figure 2·87. Removing OI' installin9 intake valve access covers. (9) Separate intercylinder connector flanges (1, fig. 2-88). Using a piece of shim stock, loosen flanges of intercylinder sleeve (2). CAUTION Do not damage sealing surface on flange of intercylinder sleeve as it will cause leaks and the replacement of the sleeve will be required. (10) Remove four machine bolts and lockwashers (3). Remove seven machine bolts and flat washer (4) and two machine screws and flat washers (5). NOTE One valve rocker arm cover retaining machine screw and flat washer, and the associated machfoing, have been eliminated from the cylinder assembly on late engi nes. The ma- chine screw that has been eliminated is marked X on figure 2-88. . (11) Tu the engine flywheel to release the tension on the valve rocker arms, caused by the valve springs. Using splined wrench, Part No. 10882747 (fig. 2-42), tu flywheel until valve rocker arm rollers are on the camshaft base circle, or until both valves are closed. (11.1) Turn the engine crankshaft to release valve spring tension on the valve rocker arms. Po- sition improvised engine tu ming tool (1, fig. 2-42.1)' on power takeoff coupling and secure with ur