Fuel System 58 UENR0623-02 1. If necessary, remove the accessory drive. Refer to Disassembly and Assembly, “Accessory Drive - Remove and Install” for the correct procedure. Remove plug (1) from the engine. Use Tooling (A) in order to rotate the crankshaft in the normal direction of rotation. 5. If necessary, remove Tooling (B). Install plug (1) to the engine. 6. If necessary, install the accessory drive . Refer to Disassembly and Assembly, “Accessory Drive - Remove and Install” for the correct procedure. 2. Install Tooling (B) into Hole (X) in the engine. Use Tooling (B) in order to locate the camshaft in the correct position. i04338389 Fuel Quality - Test Note:
Do not use excessive force to install Tooling (B). Do not use Tooling (B) to hold the camshaft during repairs. Note: Refer to Systems Operation, Testing and Adjusting, “Cleanliness of Fuel System Components” for detailed information on the standards of cleanliness that must be observed during ALL work on the fuel system. 3. If the shaft for the fuel injection pump is not in the position shown in illustration 51 , the timing of the fuel injection pump may be incorrect. If necessary, remove the fuel injection pump. Refer to Disassembly and Assembly for the correct procedure. Ensure that all adjustments and repairs are performed by authorized personnel that have had the correct training.
Use the following procedure to test for problems regarding fuel quality: 1. Determine if water and/or contaminants are present in the fuel. Check the water separator. Drain the water separator, if necessary. A full fuel tank minimizes the potential for overnight condensation. Note: A water separator can appear to be full of fuel when the water separator is full of water. 2. Determine if contaminants are present in the fuel. Remove a sample of fuel from the bottom of the fuel tank. Visually inspect the fuel sample for contaminants. The color of the fuel is not necessarily an indication of fuel quality.
However, fuel that is black, brown, and/or like sludge can be an indication of the growth of bacteria or oil contamination. In cold temperatures, cloudy fuel indicates that the fuel may not be suitable for operating conditions. Refer to Operation and Maintenance Manual, “Fuel Recommendations” for more information. 3. If fuel quality is still suspected as a possible cause to problems regarding engine performance, disconnect the fuel inlet line. Temporarily operate the engine from a separate source of fuel that is known to be good. This will determine if the problem is caused by fuel quality. If fuel quality is determined to be the problem, drain the fuel system and replace the fuel filters.
Engine performance can be affected by the following characteristics: Illustration 51 g02906337 Typical example 4. Ensure that the camshaft is in correct position. If necessary, install the fuel injection pump. Refer to Disassembly and Assembly for the correct procedure. Ensure that the fuel injection pump shaft is in the correct position as shown in illustration 51 . The Angle (Y) should be 45 degrees. Cetane number of the fuel