G3516 TA Engine Caterpillar

Note: Data from a fuel analysis is required for this procedure.

1. Connect the Caterpillar Electronic Technician (ET) to the engine.

2. Verify that the value of the "Desired Timing" parameters is correct according to the recommended timing in the Engine Performance, "Fuel Usage Guide". Enter the correct value if the existing value is incorrect.

   The "Desired Timing" is determined with the methane number of the primary fuel that is used.

   Use the Engine Performance Sheet, "Fuel Usage Guide"

   Note: Determine the desired timing by using the Caterpillar Software , "Gas Engine Rating Pro (GERP)" with the results that are from the fuel analysis. Use of only the data from the gas analysis can result in incorrect settings.

   Refer to Systems Operation, "Electronic Control System Parameters" for additional information on the "Desired Timing" parameters.

3. Start the engine. Run the engine at rated speed and load.

4. 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.