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 (fig. 2-112). (2) Remove and discard gasket. NOTE It is necessary to remove the left bank engine oil cooler before the thermostatic valve can be removed. Refer to paragraph 2-27a for oil cooler removal. Fisure 2·112. f(emouing or in&talling engine oil cooler 1/ier111ostaric valve a.5embly. b. Installation. (1) Position new gasket on thermostatic valve assembly (fig. 2-112). (2) Install valve. Install left bank engine oil cꝏler (para 2-27b) . 2-38. Cooling Fans, Fan Drive Oil Seal, or Fan Clutch Bearing a. Removal. NOTE The front and rear fans, and clutch assem- blies are interchangeable and are removed in a similar manner. For instructional pur- poses removal of the rear fan clutch is described in this section. (1) Remove cꝏling fan vane and cꝏling fan. Refer to paragraph 2-2la. (2) Cut lking wire (1, fig. 2-113) and remove six machine bolts and flat washers (2). Install two mechanical pullers, Part No. 5739997 in screw holes (3). Turn pullers alternately and remove oil seal 2·74 Change 3 housing (4). Remove oil seal (5) from housing. Remove and discard gasket. (3) Remove twelve self-locking nuts (6). Re- move ten self-locking nuts and machine bolts (7) and two self-locking bolts ( 10). Remove clamp brackets (8). Install jack screws (5/ 16-24 thread) into three threaded holes (9) in fan drive housing cover (10) and alteately tighten jack screws until cover is separated from fan drive housing and remove cover and clutch assembly. Remove jack screws. (4) Remove and discard fan drive housing cover preformed packing. Separate housing cover from ver- tical drive shaft and remove clutch upper ball bearing from housing cover. �\ I Locking wir e 2 Machine bolt and Oat washer 3 Puller screw hole 4 Oil seal housing 5 Oil seal 6 Sclf·locking nut 7 Bolt, pin te and cln mp 8 Clamp bracket 9 Threaded hole I 0 Self-locking bolt 11 Fan dri\•e housing cover Figure 2·113. Removing or insralli11g fo11 drive oil sea/ 011d clu1clt bearing. b. Installation. (1) Press ball bearing into fan drive housing cover and install cover on vertical drive shaft. Install new preformed packing on fan drive housing cover. (2) Install assembled fan drive housing cover ( 11, fig. 2-113) and clutch assembly on fan drive housing. Position fuel injector tube clamp brackets (8), on fan drive housing cover as shown in figures . 2-113 and 2- 114, and secure housing cover and brackets with twelve self-locking nuts (6, fig. 2-1 13). Install associated plates and clamps and secure with ten self-locking nuts and machfoe bolts (7) and two self-locking bolts (I 0).