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 Tobie 2·2. Troublehꝏting ocedures - Continued Malfunction Prob abl e caus e Smoke Generating System Abnormal Operation - Continued I 21.2 Smoke prolluccd is of poor quality. . of fuel from loose conneclion or ruptured hose or lube. 21.3 I DT No 1 2 3 4 5 6 2·24 Smoke produced when smoke gen· erting system is not a ctivated. NOTE Refer lo Chapter 4 for AVDS-1790·2CA and AVDS·l 790·2DA I rou blcshool i ng. Tut Deription Fuel Pressure Tests 1.1 Normal Fuel Preure 1.2 Jn.tank Fuel Pump 1.3 Primary Fuel Filter 1.4 FueWater Separator 1.5 In-tank Fuel Pumps b. Restricted fuel hose or tube. c. Restricted fuel filters. d. Restricted fuel lube adapters in ex· haust pipes. a. No current to solenoid valves. b. Solenoid vJve(s) dcfcctil'e. Ding11osric1 Tesu ( nt ents) l.6 Fuel Preure Regulating (Fuel Return) Valve Test 1.7 Engine Fuel Supply Pump l.8 High Pressure Fuel Check Fuel Injector Nole Tests 2.1 Ncle Malfunction 2.2 Bench Test 2.3 Nole e in Cyl inder Fuel Injection Pump Tests 3.1 Pumping Act i on 3.2 Pump Ro t al lon Engine Fuel Ret urn Test 4.1 Return Fuel Flow Engine Fuel Shulff Operational Check 5.1 Elect ric Cont rol 5.2 Manual Control Vehicle Jn.Tank Fuel Pump Operation 6.1 Pump Operational Check 6.2 Pump Fuel Pressure 6.3 Pump Output (Fuel Flow Capacity) Change 3 Corrective action , b. c. d. Tighten connection or replnce hose or tube. Replace hose or tube. Service fuel filters. Replace f uel tub assemblies. a. Repair wiring harness. b. Replncc solenoid vnlve(s).