Ignition Timing - Adjust
Use the following procedure to adjust the base timing of the engine:
Note: Data from a fuel analysis is required for this procedure.
- Connect the Caterpillar Electronic Technician (ET) to the engine.
- Verify that the value of the "First Desired Timing" parameter is correct according to the recommended timing in the Engine Performance, "Fuel Usage Guide". Enter the correct values if the existing values are incorrect.
Refer to Systems Operation, "Electronic Control System Parameters" for additional information on the "Desired Timing" parameters.
- Start the engine. Run the engine at rated speed and load.
- Use Cat ET to view the "Actual Engine Ignition Timing" status parameter. This parameter is in "General System Parameters". Verify that the actual timing is approximately equal to the desired timing.
Note: The actual timing may vary according to the engine load, speed, and the detonation level.
Caterpillar Information System:
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