TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download
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0 0 0 0 0 0 0 0 0 DAMPER HOUSING /SPLIT LINE �1 CRANKCASE ASSEMBLY APPLY ADHESIVE SEALANT AS SHOWN IN. APPROX TA055569 Fiure 3-320.1. Bottom flange of damper housing and c1·a>1kcase sho11h1g sealant application. 3-165. Rear Fan and Accessory Drive Hous- ing with Clutch Assembly and Mount- ing Base a. Install three new preformed packings on oil transfer tubes in crankcase (fig. 3-93). Apply a thin coat of sealing compound (MIL-S-45180 ORD) to mounting base (3, fig. 3-92) lower mounting surface and install mounting base on crankcase assembly and secure with six capscrews and flat washers (2) and ten slotted nuts and flat washers (1). Torque tighten screws and nuts to 275 pound-inches and install ten cotter pins in slotted nuts. Install four new preformed packings (4) in oil transfer counter- bores and apply a thin coat of sealing compound (MIL-S-45180 ORD) on mounting surface of base prior to assembling rear fan and accessory drive housing. b. Remove top two self-locking nuts and flat I washers (3, fig. 3-89) to provide for the attachment of fan and advance unit housing sling part number 10882945 (fig. 3-90). Install sling on rear fan drive housing and clutch assembly and secure with two TM 9-2815-220-34 self-locking nuts and flat washers (3, fig. 3-89). Se-0 cure lifting sling to fan vertical drive shaft. with fan slotted nut (fig. 3-90). Adjust lifting eye in slot to assure balanced position of the assembly during installation. c. Lower the rear fan and accessory drive hous- ing (fig. 3-322) until holes in housing aline with studs in mounting base. Continue lowering hous- ing until accessory drive bevel gearshaft teeth en- gage with gear teeth of accessory drive gear. After rear fan and accessory drive housing are posi- tioned remove slotted nut attaching housing sling to vertical drive shaft. Remove two self-locking nuts and nat washers (3, fig. 3-89) and remove sling. . Install one self-Jocking nut and flat washel' (5, fig. 3-89) on each side or the drive housing mount- ing base flange. One self-locking nut will be in- stalled at stud (4) when fire extinguisher tube is installed. Install two self-locking nuts and llaL washer (3) using for the attachment of fan and advance unit sling, part number 10882945. Secure the 1·ear fan and accessory drive housing assembly to the left side of the mounting base with 11 self- locking nuts and flat washers (1). Install self- locking nut, flat washer and seal washer (2). Torque tighten 11 nuts to 275 pound-inches. Secure the rear fan and accessory drive housing assembly to the i;ght side of the mounting base with 13 self-locking nuts and flat washers (fig. 3-88). Install one self-locking nut, flat washer and seal washer (fig.3-88). Torque tighten nuts to275 pound-inches. 3-166. Fuel Injection Pump Mounting Base Install new preformed packing at oil transfer tube in crankcase assembly (fig. 3-87). lnstall fuel injec- tion pump mounting base on crankcase assembly and secure with four bolts and lockwashers (fig. 3-86) and torque tighten to 750 pound-inches. ln- stall a new preformed packing on oil transfer tube on mounting base. 3-167. Front Fan Drive Housing with Clutch Assembly and Mounting Base a. Install a new preformed packing at oil transfer tube in crankcase assembly (fig. 3-85). Apply a thin coat of sealing compound (MI L-S-45180 ORD) on the mounting base lower mounting surface. Install front fan drive housing mounting base assembly (4, fig. 3-84) on crankcase assembly and secure with two capscrews and flat washers (2) and ten slotted nuts and flat washers (1). Torque tighten slotted nuts and capscrews to 275 pound-inches and secure nuts with ten cotter pins. Install a new preformed packing (3) in oil transfer tube cou nterbore in mounting base assembly. Change 2 3·229