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 1 Injtion pump drive gearshafl 2 lt hole 3 wel pin 4 wel pin hole 6 Flyweiht housing 6 Boll ho le 7 Alinement mark Figure 346. ln..ttalli11g injecrion (Hiii•/• drit•e gearsl1af1. (9) Install six bolts (2, fig. S-87) through gearshaft flange, flyweight housing advance vane housing and secure in vane housing cover. cure bolts with lking wire. Move the adjusting ring to aline scribe marks (6) on ring, flyweight (5) and drive gearshaft flange (7). In- sll two slotted nuts, flat washers (3) and cotter pins on flyweight pins securing adjusting ri ng (4). Install in- jection driven gearshaft hub clamp (1). 3-148 I Injection driven geahafl hub clamp 2 ll 3 Nut and wher 4 Adjusting ring 5 ñ · eig ht 6 Ahnemenl marks 7 Drive geahaft nangc Figure 347. /nJro/ling aduance fl>weighr adjwring ring and bearing wpporl clamp. c. Test. (1) Test fuel injection pump advance aembly using tt snd assembly Part No.1{fig. 3-ø). Testing of fuel injection pump advance assembly is re- quired on all units that have been repaired to insure op- timum engine prefonnance. This testing will be ac- complished prior assembly of the engine rear fan and accessory drive housing assembly.The tt snd is designed check and bench tt the advance charac- teristics of the fuel injection pump advance assembly, under conditions simulating engine operation over an operating range of 40 to Ą0 RPM. \ ) )