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 ( 4) On late engines (spur gearshaft with 7/8-14 threads) install power takeff drive coupling (l, fig. 2-148.2) and flat washer (4). Be certain power takeoff spur gearshaft and coupllng taper surfaces are dry and free from oil and grease. Coat nut tlueads only with engine oil OE/HD0-30, or equivalent, and install self-locking nut (3). Install holdfog bar and puUer assembly, Part No. 12254282, on power takff drive coupling and secure with two 7 /16-20 UNF x 1-1/2 inch ca.pscrews (2). Hold holding bar and puller assem- bly to prevent crankshaft from tuing, and torque tighten self-locking nut to 280 - 290 poun- ds feet. Remove puller assembly. HOLDING BAR AND PULLER ASSEMBLY 1 Power take-off drive coupling 2 Capscrew (4. l ) On early engines (spur gearshaft with 3/4-16 threads) instaU power take-off drive cou- pling (I, fig. 2-148.2) and flat washer (4). Be certain spur · gearshaft threads are · d rnd free from oil or ease. Coat nut threads with engine oil OE/IID0-30, or equivalent, and install nut (3). Install holding bar and puJler assembly, Part No. 12254282, on power take-off drive coupling and secure with two 7/16-20UNF x 1-1/2 inch cap- screws (2). Hold holding bar and puller assembly to prevent crankshaft from tuing. Note the prevail- ing nut torque (before nut bottoms agaiJlSt the Oat washer), and add 190 pound-feet torque to com- plete the torque tightening procedure. Remove puller assembly. POWER TAKE-OFF DRIVE HOUSING 3 Self-locking nut 4 Flat washer TA055548 Figure t-18.£. Removing or installing power take-off d+e coupling self-locking nut, model AVDS-1790-flDR engine. 2-�2 Change 3