Fuel Quality - Test - Perkins 854E-E34TA Systems Operation Testing And Adjusting

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3. If the shaft for the fuel injection pump is not in the
position shown in illustration 49 , 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.
Illustration 49
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 49 . The Angle (Y) should be 45
degrees.
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.
This document is printed from SPI². Not for RESALE

Fuel Quality - Test

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.
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
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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:
• Cetane number of the fuel
• Viscosity of the fuel
• Lubricity of the fuel
• Air in the fuel
• Other fuel characteristics
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Fuel System
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