BOLT 9X8887 - Caterpillar

When you are troubleshooting the engine, refer to Specifications, and Testing and Adjusting for additional information.Troubleshooting can be difficult. The most common problems are identified in this troubleshooting manual. The symptoms, causes, and guidance for solving the problems are given.Sometimes additional repair work is required beyond the repair which is recommended. Frequently, a problem does not exist in isolation. The problem can be a result of wear or damage to several parts which operate together as part of a system.All possible problems and the probable causes cannot be listed. The technician must follow a logical process of eliminating possible causes and identifying the specific causes of the problems.Troubleshooting the Fuel Injection Nozzles
Note: Be careful when you are handling the fuel injection nozzles in order to prevent damage to the orifices, threads, and other surfaces. When a fuel injection nozzle is installed, make sure that all surfaces and threads are clean.The procedures which require disassembly or the adjustment of the fuel injection nozzle only relate to engines with the following serial numbers:
4ZK1-UP
6FK1-UP
7AK1-UP
1ML1-UPDo not disassemble the fuel injection nozzles and do not adjust the fuel injection nozzles on engines with the following serial numbers:
5YS1-UP
7MS1-UP
2PW1-UP
3GW1-UP Replace the fuel injection nozzle on these engines if the fuel injection nozzle does not operate correctly. These fuel injection nozzles do not have serviceable parts.Refer to Specifications, "Fuel Injection Nozzles" for additional information.The Engine is Difficult to Start or the Engine Runs Rough.
Probable Cause
The fuel injection nozzle does not seal correctly in the cylinder head. Make sure that the seals and the mating surface of the cylinder head are clean. The seal that is formed by the anti-seize compound on the threads of the fuel injection nozzle may be broken. Make sure that the fuel injection nozzle is tightened to the correct torque in the threaded hole of the cylinder head.
Extra seat washers were not removed from the threaded recess in the cylinder head for the fuel injection nozzle. There is debris on the mating surface of the cylinder head with the seat washer. Remove any extra seat washer or debris.
The connections of the high pressure fuel line leak. Tighten the fittings of the high pressure fuel line.
The fuel injection nozzle does not operate correctly. Note: This step does not include (S/N: 5YS; 7MS; 2PW; 3GW) engines. The fuel injection nozzles for these engine serial numbers are not serviceable. Adjustment of these fuel injection nozzles should not be made. If any problem with the internal components of these fuel injection nozzles exist, the fuel injection nozzle should be replaced.Make sure that the mounting bolts for the clamp and the components of the fuel injection nozzle are tightened to the correct torques. Make sure that the seal and the spacer are positioned correctly. Test the fuel injection nozzle on a nozzle tester.
The incorrect fuel injection nozzle is installed. Make sure that all fuel injection nozzles have the correct identification code for the engine. Refer to the Specifications Module, "Fuel Injection Nozzles".The Engine Exhaust has Too Much