TM 5-6115-590-12 Table 4-2.  Troubleshooting - continued MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 11. Check for turbine exhaust obstruction. Remove obstruction. Step 12. Check ignition unit. Refer   to   paragraph   4-69c   for   ignition   unit test.  Replace ignition unit.  (fig.  4-41) Step 13. Check igniter plug or ignition lead. Refer  to  paragraph  4-67c  for  igniter.    Plug test.    Replace  igniter  plug  or  ignition  lead. (fig.  4-41 7. ENGINE STARTS ACCELERATES TO GOV- ERNED SPEED OR LESS AND SHUTS DOWN. Step 1. Check fuel pump governor setting. Adjust     governor     setting,     see     paragraph 4-14e(4)   or   replace   fuel   control   unit.      (fig. 4-43) Step 2. Check   centrifugal   multispeed   switch   assembly overspeed (110 percent) switch setting. Refer  to  paragraph  4-14e(6)  for  adjustment procedure. Replace centrifugal multispeed switch assembly.  (fig.  4-43) Step 3. Check   for   shorted   generator   creating   drag   on engine  and  causing  shutdown  at  approximately 35 percent governed speed. Replace generator.  (Para.  4-60) 8. COMBUSTION  OCCURS  BUT  ENGINE  WILL  NOT ACCELERATE OR ACCELERATES TOO SLOWLY. Step 1. Check specific gravity of electrolyte. Recharge or replace batteries as indicated or use external power source. Step 2. Check fuel supply. Replenish fuel supply. Step 3. Check control air lines and fittings. If  air  lines  and  fittings  and  secure,  replace fuel control unit Step 4. Check    acceleration    limiter    valve    adjustment. Refer  to  paragraph  4-14e(3)  for  adjustment procedure. If   proper   adjustment   cannot   be   obtained, replace fuel control unit.  (fig.  4-44) Step 5. Check control unit. Replace fuel control unit  (fig.  4-44) Step 6. Check acceleration and overtemperature control thermostat adjustment. Refer  to  paragraph  4-14e(1)  for   adjustment procedure. Replace failed thermostat.  (fig.  4-49) Step 7. Check fuel atomizer. Replace fuel atomizer assembly.  (fig.  4-50) Step 8. Check for leakage from ducts and plenum. Check   load   control   valve   for   closed   position. Replace  bad  control  valve  if  full  closed  (fig. 4-28) 9. EXCESSIVE EXHAUST GAS TEMPERATURE ON START. Step 1. Check acceleration and overtemperature control thermostat adjustment. Refer  to  paragraph  4-14e(1)  for  adjustment procedure. Replace thermostat.  (fig.  4-49) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 2. Check acceleration limiter valve adjustment. Refer to paragraph 4-14e(3) for adjustment procedure. If proper adjustment cannot be obtained, replace fuel control assembly.  (fig.  4-44) Step 3. Check fuel atomizer flow divider valve. Replace fuel atomizer assembly. 10.   ERRATIC    ENGINE    ACCELERATION,    OPERATION,    OR INABILITY TO CARRY LOAD. Step 1. Check for contamination in fuel spray. Replace fuel filters.  (fig.  4-50) Step 2. Check atomizer assembly. Clean  fuel  atomizer  screen  or  replace  fuel  atomizer assembly.  (fig.  4-50) Step 3. Check fuel filter. Replace fuel filter.  (fig.  4-45) Step 4. Check control air lines and fittings for leaks. If air lines and fittings are secure replace fuel control assembly.  (fig.  4-44) Step 5. Check     acceleration     and     overtemperature     thermostat adjustment. Refer to paragraph 4-14e(1) for adjustment procedure. Replace thermostat (fig.  4-49) Step 6. Check fuel control assembly. Replace fuel control assembly (fig.  4-44) Step 7. Check name tube and combustion cap assembly. Clean flame tube and combustion cap. Replace as required.  (fig.  4-50) Step 8. Check load control valve for full closed position. If full closed position cannot be obtained, replace bed control valve.  (fig.  4-28) Step 9. Check fuel solenoid valve. Check actuation of valve. Replace valve.  (fig.  4-45) Step 10. Check fuel boost pump and motor assembly. Replace  fuel  boost  pump  and  motor  assembly.    (fig. 4-34) Step 11. Check for restricted fuel supply. Locate and remove restriction. 11.   SMOKE EMITTED FOR SHORT TIME AFTER START. Step 1. Check for excessive oil in system or oil tank. Drain oil to proper level. Step 2. Check scavenge oil pump. Replace oil pump  (fig.  4-48) Step 3. Check fuel plenum drain check valve. Clean or replace drain valve.  (fig.  4-49} 12.   EXCESSIVE OIL TEMPERATURE. Step 1. Check oil supply. Check oil tank dipstick for proper oil level. Step 2. Check for restriction in oil cooler cooling air tubes. Remove restriction. Step 3. Check oil cooling fan. Replace cooling fan.  (fig.  4-43) Step 4. Check oil temperature regulator valve. Replace regulator valve.  (fig.  4-40) Change 5    4-22