PIN 7K9348 - Caterpillar

Initial Engine Operation
1. Make sure all static checks are completed before dynamic checks are started.2. Close the rated speed switch (or put jumper across T9 and T10).3. Activate 8290 Speed Control with DC voltage supply.4. Magnetic Pickupa. Activate manual shutoff (or disconnect wires to actuator from terminals T3 and T4).b. Crank the engine and measure output voltage of magnetic pickup across terminals T5 and T6 [should be greater than 1 VDC (measured at RMS voltage)].c. Release manual shutoff (or reconnect wires to actuator from terminals T3 and T4).
The engine can overspeed (run out of control) due to improper governor assembly or adjustment, which could result in personal injury, loss of life, and/or property damage.Be prepared to stop the engine by electrically activating the emergency air shutoff, or by manually closing the air inlets.
5. Start the engine. It may be necessary to turn the rated speed potentiometer one or two turns clockwise before the engine will start.
Be sure to control the engine shutoff manually if there is no oil pressure, or if oil pressure is to low. Damage to the engine may result if the engine continues without the correct oil pressure.
6. Rated Speed Potentiometera. Set engine rated speed by turning this potentiometer clockwise to increase speed setting.b. Measure magnetic pickup output voltage at terminals T5 and T6. Voltage should be less than 50 VAC, but greater than 1.5 VAC (measured as RMS voltage). If voltage is greater or less than indicated VAC, check clearance between magnetic pickup and flywheel ring gear tooth. Make adjustments as necessary. (See Service Procedure C.)7. Connect a DC voltmeter to terminals T3 (+) and T4 (-) to get an indication of actuator voltage stability.8. Adjust Gain And Stability PotentiometersRefer to Service Procedure E.9. Start Fuel Limit Adjustment (if present)Refer to Service Procedure F.10. Linkage CalibrationRefer to Service Procedure B.