TM-9-2815-220-34 Direct Support Manual for AVDS-1790-2C and AVDS-1790-2D Engines Download

TM 9-2815-220-34 five machine screws (fig. 3-43). Install left rear shroud in a similar manner. Install generator out- let p1·eformed hose and secure with two hose clamps (fig. 2-73.1). b. Ir � stall lefL front shroud (9, fig. 3-42) on engine and secu1·e to damper end cylinder head shroud with machine screw (7). Install No. lL cyl inder baffle over cyli nder (fig. 3-40) and secu re to front shroud with two machine screws (8, fig. 3-42). In- stal l side filler plate on left front shroud and secure to s l1l 'oud wiLh three assembled washer bolts (5) and to clamper housing with three machine screws and lockwashers (4). lnstall top filler plate on damper housing and secure to clamper housing with two machine screws and lockwashers (2) and to front sh1·oud with assembled washer bolts (1). c. Install fuel injection pump fuel cutoff lead through left front shroud and secure with four machine screws, lockwashers and nuts(7, fig. 3-41). Install flat washer on bulkhead elbow (5) and in- stal l elbow through left front shroud and secure with lockwasher and nut(6). Connect fuel injection pump fuel inlet hose (4) to bulkhead elbow. Install flat washer on fire extinguisher tube adapter (2) and install adapter thr ough left front shroud and secure with lockwasher and nut (3). Connect fire extinguisher tube (1) to adapter. c.1. I nstal l bulkhead adapter (10, fig. 3-41.1) on shroud and secure with nut and lockwasher (11). Connect fuel return hose(9) to adapter. Install fuel in jecti on pump fuel cutoff lead (8) through shroud and secure with four machine screws, lockwashers and nuts (7). stall bulkhead elbow (5) t h rough shroud and secure with nut and lockwasher (6). Connect fuel i njection pump fuel inlet hose (4) to bulkhead elbow. I nstal I fire extingu isher bulkhead adapter (2) on shroud and secure with nut and lockwash er(3).Connect fire ex ti ngu ishe1· tube(1) to bulkhead adapter. d. Install right front shroud (5, fig. 3-39) on en- gine and secure to damper end cylinder head shroud with machine screws (3). Install No. lR cyli nder baffle over cyli nder (fig. 3-40) and secure to front shroud with two machine screws (4, fig. 3-39). Secure front shroud to damper hou s i ng with machine screw and lockwasher (2) and to left front shroud with assembled washer bolt (1). e. Install No. JR cylinder barrel shroud on cylin- der deflector and right front shroud and secure to shroud with two machine screws (fig. 3-38). Install No. lL cylinder barrel shroud in the same manner except do not install the top machine screw at this time. 3-179.1 Power Takeoff Drive Housing a. Install power takeoff drive hous i ng on damper 3·240 Change 3 hou sing studs using new mounting gasket (fig. 2-148.4). b. On engines using the late spur gearshaft with 7/8-14 inch threads, remove puller screw from alinement tool, part number 12275768, and insert alincmcnt tool in power takeoff drive housing until firmly seated on the power takeoff spur gearshaft taper. With the alincmcnt tool firmly seated on the spur gcarsho ft, install seven self-locking nuts and llat washers. Do not install self-locking nut and flat washer on stud located at the 9 o 'c l ock position. Install puller screw and tu clockwise to remove a(jnement tool. b.1. On engines using the early spur gearshaft with 3/4-16 inch threads, remove puller screw from alinement tool, part number 11684212, and insert alinemenl tool in power takeoff drive housing until firmly seated on the power takeoff spur gearshaft taper. ilh the linement tool firmly seated on the spur gearshaft, install seven self-locking nuts and nat washers. Do not install self-locking nut and nat washer on stud located at the 9 o'clock position. Install puller screw and tu clockwise to remove alinement tool. NOTE Drive coupling taper and spur gearshaft taper areas must be wiped dry with dry-cleanfog solvent (PD-680) to assure maximum friction. c. On late engines (spur gearshaft with 7/8-14 threads), install power take-off drive coupling (l , fig. 2-148.2) and flat washer (4). Be certain power take-off spur gearshaft and coupling taper surfaces arc d1y and free from oil and grease. Coat nut tlu·eads only with engine o OE/HD0-30, or equivaJenl, and install self-Jocking nut (3). Install holding bir and puller assembly, t No. 12254282, on power take-off drive coupling and secure with two 7/16-20UNr x 1-1/2 inch cap- screws (2). Hold holding bar and puUer assembly t o prevent crankshaft from tuing, :rnd torque tighten self-locking nut to 280 - 290 pound feet. Remove puller assembly. c.1. On engines using the early spur gearshaft with 3/4-16 threads, install power takeoff drive coupling (I, fig. 2-148.2) and Oat washer (4). Be certain spur genrshaft threads arc dry and free from oil or grease. Coat nut threads with engine oil OE/HD0-30, or equivalent, and install nut (3). Install holding bar and puller assembly, Part No . 12254282, on power takeoff drive coupling and secure with two 7/16-20UNf7 x 1-1/2 inch eap- scrcws ( 2). I !old holding bar and puller assembly to prevent crankshaft from tuing. Note the prevail- ing nut torque (bere nut bottoms against the n�1t washer), and <ldd 190 pound-feet torque to com- pie te the torque tightening procedure. Remove puller assembly. ) )