Removal Procedure
| NOTICE |
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
| NOTICE |
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Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
- Loosen the hose clamps and remove hose (1) from the air inlet manifold and the valve mechanism cover.
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| Illustration 1 | g00579781 |
- Disconnect four fuel injection lines (2) from the fuel injection nozzles. Immediately cap all openings or plug all openings in order to prevent contamination.
| NOTICE |
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Do not let the tops of the fuel injection nozzles turn when the fuel line nuts are tightened or loosened. The fuel injection nozzles will be damaged if the top of the fuel injection 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 fuel injection nozzles will not be correct. |
- Disconnect four fuel injection lines (3) from the fuel injection pump. Immediately cap all openings or plug all openings in order to prevent contamination.
- Remove fuel injection lines (4) from the engine.
- Remove four banjo bolts (5) and the eight washers from fuel return line (6) .
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| Illustration 2 | g00579879 |
- Remove fuel return line (6) from the engine.
Installation Procedure
| NOTICE |
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
- Put fuel return line (6) in position on the engine.
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| Illustration 3 | g00579879 |
- Install eight new washers and four banjo bolts (5). Tighten the four bolts to a torque of 9 N·m (80 lb in).
- Put fuel injection lines (4) in position on the engine.
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| Illustration 4 | g00579781 |
- Remove the caps from the fuel injection pump and from the fuel injection nozzles.
- Connect fuel injection lines (4) to the fuel injection pump with nuts (3). Tighten nuts (3) to a torque of 27 N·m (20 lb ft).
| NOTICE |
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Do not let the tops of the fuel injection nozzles turn when the fuel line nuts are tightened or loosened. The fuel injection nozzles will be damaged if the top of the fuel injection 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 fuel injection nozzles will not be correct. |
- Connect fuel injection lines (4) to the fuel injection nozzles with nuts (2). Tighten nuts (2) to a torque of 27 N·m (20 lb ft).
- Prime the fuel system. Refer to the Testing and Adjusting Module, "Fuel System" topic for more information.