105400-8730 ZEXEL 9 420 611 653 BOSCH GOVERNOR 9420611653 1054008730 8971939730

Proper operation and maintenance are key factors in obtaining the maximum life and economy of the engine. Following the directions in this manual will lower operating costs.The time needed for the engine to reach the normal mode of operation is usually less than the time taken for a walk-around-inspection of the engine.After the engine is started and the cold low idle operation is completed, the engine can be operated at rated speed and low power. The engine will reach normal operating temperature faster when operated at rated speed and low power demand than when idled at no load. Typically the engine should be up to operating temperature in a few minutes.Governors and Actuators
Your engine may be equipped with a:* full-range governor* Woodward PSG Governor* Woodward 1724 Actuator* Woodward 524 Actuator
PSG Actuator
1724/524 ActuatorWoodward Governors/Actuators are usually electrically operated from a control panel. The application is usually an EPG power generator set. On standby gen sets the governor may be set to operate only at Full Load Speed.Change Engine Speed
If equipped with a control panel, a RAISE/LOWER switch or a speed setting potentiometer is used to adjust the operating speed.Starting, Operating and Stopping Engines Equipped with Control Panels
For all information regarding the generator control panel used for starting, operating and stopping the engine, refer to the Engine Protection Devices Generator Set Control Panel topic in this publication or Caterpillar SR4 Generators and Control Panels, SEBU6150. Additional information and programming instructions are provided in the Service Manual for your specific control panel.Mechanical Governors (If Equipped)
Governor Control LeverYour engine may be equipped with a full-range governor. Most other manufacturers' engines have min-max type governors that only govern at high and low idle to prevent the engine from overspeeding or dying. With the min-max governor, the position of the speed lever determines the amount of fuel delivered to the engine.With the full-range governor, the position of the speed lever sets engine speed and helps hold a constant speed independent of load which makes operation easier.The governor control motor is a 24 volt motor which allows for engine speed control from a remote location through a governor RAISE/LOWER switch. This governor control switch is used with the optional EMCP II. Always increase engine speed to high idle before applying load.For information regarding initial checks and adjustments, refer to the Service Manual or contact your Caterpillar dealer.Driven Equipment Without Load
1. Move the governor control lever to half engine speed.2. Interrupted starts put excessive stress on the drive train and waste fuel. To get the driven equipment in motion, engage the clutch smoothly, with no load on the equipment. This should result in a smooth, easy start without increasing the engine speed above low idle or slipping the clutch. For generator sets, move the governor control to high idle (full load) position (1800 rpm for 60 Hz and 1500 rpm for 50 Hz).3. Apply the load and check the gauges and equipment for proper operation. Begin operating the engine at low load. After normal oil pressure