TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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2-28. Cylinder Head 011 Drain Tubes and In· take Manifold Tubes NOTE Intake manifold tubes for cylinder 1, 2, 5, and 6 on each side of the engine can be replaced without removing the complete intake manifold. However, the cylinder drain manifold must be removed before any intake tube can be replaced. Intake manifold tubes for cylinder 3 and 4 on each side of the engine cannot be replaced unless the complete intake manifold sys- tem is removed from the engine. For in- structional purposes replacement of in- take manifold tube for cylinder 2R is de- scribed in this section. Tubes for cylinders 1 R, SR, 6R, lL, 2L, SL and 6L are replaced in the same manner. a. Removal. (1) Remove cooling fan vanes, cooling fans, engine upper covers and cooling fan shroud. Refer to paragraph 2-21a. (2) Remove oil coolers. Refer to paragraph 2-27a. (3) Remo,·e five assembled washer bolts (fig. 2-73) and one self-locking nut and bolt and remove transmission upper shroud assembly. TM 9-2815-220-34 Figure 2·73. Disco11necti11g ol' co1111ectillg oil cooler s11p1101i frame, model AVDS-1790·2C engine. (3.1) Remove two hose clamps and preformed hose (fig. 2-73.1). Remove five assembled washer bolts to disconnect the shroud plate from the oil cooler support frame. CHANGE3 2-68.1 (2.68.2 blank)