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 3 7 � 1 Advance vane housing 2 Boll holes 3 Dowel pin hole Vane spline 5 Geahaft spline 6 Advance van: housing cover 7 Dowel pin 8 Cover bolt hole Fige 3-242. llls1alli11g 11dv1uwe 11a11e housing a11d v"'1c. b. Fuel Injection Pump Advance Assembly. (1) Install advance vane (1, fig. 3-236) in vane hous- ing (7) approximately half way, and install eight seals (7) and springs (8). Slide vane and seals into vane housing. (2) Install advance vane housing (1, fig. 3-242) with vane, seals and springs, on advance vane housing cover � with alincment clots on gearshaft spJjJJe (4) matg with alincent dot on gearshaft (5). (3) The vane must have end clearance of 0.1 inch. If vane splines have a snug fit on the accessory drive gcarshaft splines insert a 0.1 inch feeler gage be- tween vane and vane housing cover. Gently tap vane until proper end play is obtained, then remove feeler gage. Mate dowel pin holes (3) in vane housing with dowel pins (7) in cover and housing bolt holes (2) with cover bolt holes (8). Tap housing lightly with a soft hammer to seat dowel pins. 3-146 Change 3 NOTE wel pins and dowel pin holes will aline in two positions. However, the bolt holes in cover and housing will aline in one position only. Make certain that cover and housing are correctly positioned so that bolt holes are alined. (4) Mate dowel holes (2, fig. 3-243) with dowel pins (3) and bolt holes (6) with bolt holes (4) and install flyweight housing (1) on advance vane housing (5). Tap flyweight housing lightly with a soft hammer to seat dowel pins. 1 Flyweight housing 2 wel pin hole a Dowel p in 4 DolL hole 6 Advance vane housing 6 ll hole TA021573 Figure 3·243. lnsta/li11g fl>wcig/11 lio+si11g. (5) Install two flyweights on adjusting ring with flyweight pins (1, fig. 3-244) installed. NOTE Springs are attac hed to Oyweights wHh I roll pins driven thru the loops in the springs. (6) Install flyweight compression springs, seats and retainers (2) on flyweights and spread flyweights ) )