ARMY TM 9-2815-259-24 AIR FORCE TO 38G1-125-2 MARINE CORPS 09249A/09246A-24 3-39 c.   Bleed at Fuel Injection Pump. __________ WARNING Diesel and JP fuels are flammable and toxic to eyes, skin, and respiratory tract.  Skin and eye protection required.  Avoid repeated/prolonged contact.  Provide adequate ventilation.  Failure to comply could result in serious injury or death. CAUTION Fuel lines are fragile and can become twisted and damaged during maintenance.  Always use one wrench to hold one fitting stationary while the other fitting is loosened or tightened.  Failure to comply can cause damage to equipment. NOTE Catch fuel in suitable container. (1)     Loosen fuel return line (3, Figure 3-17) at fuel injection pump. (2)     Pump primer lever (6, Figure 3-16) on fuel supply pump until fuel flow is free from air bubbles. FIGURE 3-16.  FUEL SUPPLY PUMP. CAUTION Fuel lines are fragile and can become twisted and damaged during maintenance.  Always use one wrench to hold one fitting stationary while the other fitting is loosened or tightened.  Failure to comply can cause damage to equipment. (3)     Tighten fuel return line to 12 lb-ft (16 Nm).