TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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NOTE The right and left intake manifold elbows (15) are identical. The position of the left intake manifold elbow is 180 degrees op- posite from the position of the right elbow. k. Remove six self-locking nuts (14) and flat washers(13) attaching right intake manifold elbow (9) to right intake manifold. Remove elbow from manifold and remove and discard elbow gasket (12). 3-120. Cleaning Refer to paragraph 3-36. Clean intake manifold TM 9-2815-220-34 rubber hose using a dry cloth only. 3-121. Inspection and Repair a. General. Refer to paragraphs 3-37 and 3-38. b. ilfon·ifold Heater Assembly. Inspect manifold air heater fuel nozzle assembly (16, fig. 3-267) for damaged threads. c. Spark Plugs. Refer to appropriate manuaJ for care and maintenance of spark plug. Set plug gap from 0.094 to 0.114 inches. d. Studs. Refer to paragraph 3-38, table 3-30, and figure 3-261 when replacing studs. Table 3-SO . .lfa11i/old Heater illductio11 and lnt<lke Ma11ifo/d Standard Stlld lde11tijication Fig. Ref. Setting No. No. No. height req'd 3-269 11 1-3 4 3-269 20 13!16 8 3-271 ·I 13/16 16 3-271 J,5 1 12 3-271 2 25/32 12 3 23/32 24 2 Figure 3-27J. Right and leſt i>ttnke mnifold stud identification. 3·122. Assembly a. Using new intake manifold elbow gasket (12, fig. 3-270) install right intake manifold elbow (9) with generator vent elbow adapter (2, fig. 3-287) installed on right intake manifold assembly (15, fig. 3-270) (AVDS-1790-2C only) and secure with six self-Jocking nu ts (14) and flat washers (13). b. Using new No. 3 right and 4 right intake man- Stud size and length li2-20 (72) x 112-20 (15/l6) x 2-118 16-24 (232) x 5/16-24 (19/32) x 1-7/16 5/16-18 (9/16) x 5116-24 (11116) x 1-ľ 316-18 (?4) x 5116-24 (23!32) x 1-5 5/16-18 (l l/16) x 5/16-24 (9/16) x l-5/16 5/16-18 (11/16) x 5/16-24 (9/16) x l-5/16 ifold tube gaskets(6) install No. 3 right and 4 right intake manifolds (2) on right intake manifold as- sembly (15) and secure with eight self-locking nuts (5). c. Install pipe flanges (24) on No. 2 right (25) and No. 1 right(28) intake manifold tubes. Install large pipe flange (30), large spring tension washer (21) large flat washer (32) and a new preformed packing (33) on No. 1 right intake manifold tube (28). d. Install small pipe flange (31), small spring ten- sion washer (20), small flat washer (19) and a new preformed packing(18) on No. 2 right intake man- ifold tube (25). e. Install flanges and associated parts on No. 6 right(8) and No. 5 right(7) intake manifold tubes i n t h e same manner. . Install assembled No. 2 right and No. 1 right intake manifold tubes in right intake manifold tube assembly (15) and loosely install with two self-locking nuts (23) and flat washers (22), one I spaceI and lock washer (34) and three self-locking nuts (29). InstaU assembled No. 6 right and No. S right intake manifold tubes in the same manner, using four self-locking nuts (29). · g. Using a new intake manifold tube gasket (21, fig. 3-269) and with scribe marks alined, install in- take manifold tube (23) on intake manifold elbow assembly (9, fig. 3-270) and secure with six self- locking nuts (22, fig. 3-269). '1. Install two intake manifold tube hose clamps I (18, fig. 3-269) loosely on the intake manifold tube hose (19). InstaJI two turbosupercharger outlet elbow hose clamps ( l S) loosely on turbo- Change 3 3· 177