TM   10-3930-638-24&P 3-4. FUEL SYSTEM TROUBLESHOOTING (cont) MALFUNCTION TEST  OR  INSPECTION CORRECTIVE   ACTION 4. ENGINE STARTS AND STOPS (cont) Step 3. (cont) a. b. If cracks, swelling or loose screw terminals are observed, replace solenoid frame and arm assembly  (para  4-3  b);  if  continuity  not  obtained,  replace  solenoid  frame  and  arm  assembly (para  4-3b). If solenoid frame and arm assembly checks okay, proceed to step 4. Step 4. Disassemble fuel injection pump and check governor linkage for binding, foreign matter, and burrs; check metering valve for sticking condition (para 4-3b; notify general support maintenance). a. If linkage is binding or burred, replace (para 4-3b); if foreign matter is present, remove; if metering valve is sticking, replace (para 4-3b). b. If linkage and metering valve check okay and no foreign matter present, proceed to step 5. Step 5. Disassemble fuel injection pump and check transfer pump parts for wear or damage (para 4-3b; notify general  support  maintenance). a. If transfer pump parts are worn or damaged, replace (para 4-3b). b. If transfer pump parts check okay, proceed to step 6. Step 6. Disassemble fuel injection pump and check cam roller shoes for burrs; also check for freedom of rotation, chipping, and abrasive wear patterns (para 4-3b; notify general support maintenance). a. Replace cam roller shoes if burred, sticking, chipped, or abrasive wear pattern observed (para 4-3b). b. If cam roller shoes check okay, proceed to step 7. Step 7. Remove plungers and inspect for burrs, corrosion, or varnishes (para 4-3b; notify general support maintenance). If  plungers  are  burred,  corroded,  or  varnish  accumulation  is  present,  replace  (para  4-3b). 5.  ERRATIC  ENGINE  OPERATION  (SURGE,  MISFIRING,  POOR  GOVERNOR  REGULATION) Step 1. Check fuel injection pump timing (para 3-5a(3)). a. If fuel injection pump timing is not correct, adjust timing as described in para 3-5a(3). b. If fuel injection pump timing is okay, proceed to step 2. Step 2. Remove inlet strainer and check for clogged condition (para 4-3b; notify general support maintenance). a. If inlet strainer is clogged, either clean or replace strainer (para 4-3b). b. If inlet strainer is not clogged, proceed to step 3. 3-10

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