CAB GP 1797094 - Caterpillar

1. Thoroughly clean the area around each fuel line connection before the removal of any fuel lines.2. Remove two bolts (1) and (2) that fasten fuel line bracket assemblies in position. 3. Disconnect the six fuel injection line nuts (4) at the fuel injection pump housing.
Do not let tops of fuel nozzles turn when the fuel lines are loosened. The nozzles will be damaged if the top of the nozzle turns in the body. The engine will be damaged if a defective fuel injection nozzle is used because the shape of fuel (spray pattern) that comes out of the nozzles will not be correct.
4. Hold tops of the fuel nozzles with a wrench and loosen the fuel line nuts (3) at the nozzles. Remove the fuel injection line assemblies (5) from the engine.
Put caps (5F3807) and plugs (2F2990) on the fuel lines, pump and the fuel injection nozzles to keep dirt and foreign material out of the fuel system.
Install Fuel Injection Lines
Do not let the tops of fuel nozzles turn when the fuel line nuts are tightened. The nozzles will be damaged if the top of the nozzle turns in the body. The engine will be damaged if a defective fuel injection nozzle is used because the shape of fuel (spray pattern) that comes out of the nozzles will not be correct.
1. Remove protection covers from the fuel line connections. Put the fuel injection lines (1) in position. Install the fuel line nuts finger tight only.2. Hold the tops of fuel nozzles and use tool (A) and a torque wrench to tighten the fuel injection line nuts to a torque of 40 7 N m (30 5 lb.ft.). 3. Tighten the six fuel injection line nuts (3) at the fuel injection pumps to a torque of 40 7 N m (30 5 lb.ft.).4. Install the bolts that hold brackets (2) to the cylinder head.END BY:a) remove (bleed) the air from the fuel lines **See PRIMING THE FUEL SYSTEM in the MAINTENANCE GUIDE.