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 3-5.6. Deleted 3. Cooling Fan Vanes and Cooling Fans a. Remove lwo machine bolts and lockwashers (I, fig. 3-6) and two capscrews and lockwashers (2) and remove cooling fan vane (3) from front fan housing (4). Remove two machine bolts and lockwashers (5) and two capscrews and lockwashers (6) and remove cooling fan vane (3). om rear fan housing (7). Remove 12 self-locking nuts and lockwashers (8) attaching cooUng fan shroud to top frame. Open oil indicator tube cap (9) and remove oil gage indicator rod. Remove 11 assembled washer bolts (10) and remove left rear upper cover (1 I). Remove left front upper cover (12), with oil indicator tube attached. Remove and discard two preformed packings from tube cap neck. Remove 17 assembled washer bolts( l 3) and remove right rear upper cover (14) and right front upper cover(15). a. I. Remove four-capscrews and lock washers (I, fig. 3·6.1) and four nrnchinc bolts and lockwashers (2) and remove the front and rear cooling fan vanes (3). Open oil indicator tube cap (4) aml remove oil gage indicator rod. Remove 12 self-locking nuts I and Oat washers (5) and four assembled washer bolts (6) attaching cooling fan shroud to top frame. Remove assembled washer bolt (7) and 3-4.2 Change 3 remove retaining strap (8). Remove five assembled washer bolts (9) and lift left front upper cover assembly (10) with oil level indicator tube cap attached, om the oil level indicator tube assem- bly. Remove and discard the two preformed packings from the tube cap neck. Remove five assembled washer bolts (J l) and remove the left rear upper cover (12). Remove five assembled washer bolts (13) and remove cover adapter (14). Remove 10 assembled washer bolls (15) and remove right front upper cover (16). Remove 12 assembled washer bolts (17) and remove right rear upper cover (18). b. Remove cotter pin, slotted nut and tlal washer (fig. 3-7) and discard cotter pin. Rcmovl front cooling fan and hub assembly from vertical drive shaft. Remove rear cooling fan a11d hub assembly in the same manner. 3-7. Cooling Fan Shroud a. Remov e five assembled washer bol ts (f ig. 3-8) attaching cooling fan shroud and two oil cooler vent line clamps to ri ght and left front shroud. b. Remove four assembled washer bolts, flat washers an d hexagon nuts (1, fig. 3-9) attaching rear shrouds and cyli n der head fuel return tube clamps to cooling fan shroud. Remove three as- sembled washer bolts (2) and remove cooling fan shroud. ) )