TM9-2320-361-34 Table 2-1. Mechanical Troubleshooting (Contd). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION I Step 2. Step 3. Step 4. Step 5. a. b. c. If rod clevis is not positioned tightly against cover window bearing screw, fuel shutoff rod may be binding. Verify fuel shutoff rod travels freely before adjusting clearance between rod clevis and bearing screw. Failure to verify fuel shutoff rod condition may result in governor sticking under acceleration and injury to personnel. If clearance between rod clevis and screw exists, check fuel shutoff rod condition (TM9-2910-226-34). If clearance between rod clevis and bearing screw exists, adjust operating cable (TM9-2910-226-34). CAUTION Shutoff rod cover installation will require fuel shutoff rod clevis operating cable to be placed in the RUN position and governor linkage in the LOW IDLE position. Incorrect positioning of governor linkage and/or fuel shutoff cable may result in jamming of governor linkage in FULL FUEL LOAD position. Engine will run wide open when started and may cause damage to engine. If fuel shutoff rod is damaged or defective,replace fuel shutoff assembly (TM9-2910-226-34). NOTE Air entering fuel delivery lines may block fuel flow. Air can enter line(s) when fitting(s) is loose or line(s) or fitting(s) is defective. This is indicated by leaking fuel. Check operation of fuel injector nozzles. Remove fuel injector nozzles (para. 5-2) and bench test fuel injector nozzles (TM 9-2815-210-34- 1,-2-1 and, -2-2). a. If fuel injector nozzles operation is incorrect, clean, adjust, and retest (TM9-2815-210-34-1 and -2-2). b. If fuel injector nozzles are internally defective, replace (para. 5-2). Check fuel delivery lines mounted on, and from, fuel injection pump (TM 9-2320-361-20 and para. 5-3). If fuel delivery line(s) is leaking or restricted, tighten line(s) or fitting(s), repair fuel delivery line(s), or replace fitting(s) (para. 5-3). Bleed air from fuel injection system (TM9-2320-361-20). Check fuel supply pump (mounted on fuel injection pump) operation (TM9-2910-226-34). Clean dirt, grease, and paint from fuel delivery line fitting at the final fuel filters which are mounted in fuel supply pump. Operate in-tank fuel pump and crank engine. Observe the green port of fuel supply pump. If no fuel flows from outlet port of fuel supply pump, replace fuel supply pump (TM9-2910-226-34). Check fuel density compensator operation (TM9-2910-226-34). Clean dirt, grease, and paint from fuel delivery line and hydraulic head. Loosen fuel delivery line fitting in hydraulic head. Operate in-tank fuel pump and crank engine. Observe loose fitting in hydraulic head. If no fuel flows from fitting location, replace fuel injection pump (para. 5-4) and repair fuel injection pump (TM9-2910-226-34). 2-15