TM9-2815-226-34-1 - JATONKAM35s HOME ON THE WEB

TM 9-2815-226-34-1Table 2-1. TROUBLESHOOTING PROCEDURES (Cont)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION6. EXCESSIVE BLACK SMOKE AT IDLE.Step 1. Check for restricted fuel lines.Remove and purge fuel lines (TM 9-2320-281-20).Step 2. Check for blown or leaking head gasket(s).a. Retorque head bolts (table 3-3).b. Replace defective head gasket(s) (para 3-6 and 3-94).Step 3. Check for plugged injector spray holes.Clean injector (para 3-73).Step 4. Check for cracked injector body or cup.Replace defective injector (para 3-6 and 3-94).Step 5. Check for improper injector flow adjustments.Test and adjust injectors (para 3-75).Step 6. Check for worn or scored governor plunger.Replace defective plunger (para 3-82).Step 7. Check for improper weight assist setting.Set weight assist (para 3-82).Step 8. Check for worn or scored cylinder liners or pistons.Replace defective cylinder liners or pistons (para 3-6 and 3-94).Step 9. Check for broken or worn piston rings.Replace defective rings (para 3-20).2-7