3700668 GEAR AS- Caterpillar parts
Rating:
Alternative (cross code) number:
CA3700668
370-0668
3700668
CA3700668
370-0668
3700668
Weight: 78 pounds 35 kg.
Information:
The following parameters are programmed at the factory to zero:
"Crank Duration"
"Maximum Number Of Crank Cycles"The zero settings prevent the Electronic Control Module (ECM) from engaging the starting motors. The settings must be reprogrammed before the engine will crank.Ensure that the "Air Shutoff" and the "Ether Control" parameters are "Enabled/ON" (if equipped). If the engine does not have these options, ensure that these two parameters are "DISABLED/OFF".If the engine is equipped with Prelube, the "Engine Prelube Duration" must be programmed to a value that is greater than zero seconds. Otherwise, the prelube pump will not cycle. If the engine is not equipped with Prelube, the parameter must be programmed to zero.The engine will have either jacket water aftercooling or separate circuit aftercooling. The correct configuration of the aftercooling system must be programmed.No password is required for programming a new ECM during the first 100 hours of service life. Free configuration feature enables the customer to tailor the programmable setpoints to the requirements of the installation during the 100 hours. Exceptions are "Fuel Limit" and "Personality Module Mismatch".Air Shutoff
Note: This is an optional feature.The air shutoff uses a moving plate to block inlet air to the aftercooler. The engine stops because of the restricted air supply to the combustion chamber. The air shutoff only actuates for the following conditions:
The Emergency Stop button is pressed.
An overspeed shutdown occurs.Both of the air shutoffs must be reset before the engine can be restarted.
Illustration 1 g00751561
Reset knob for the air shutoffTo reset the air shutoff, turn the reset knob to the "OPEN" position.Ensure that both of the air shutoffs are reset.Cold Cylinder Cutout
Note: This feature can be enabled or disabled with a Cat ET.The Cold Cylinder Cutout feature provides the following benefits:
Reduction of white smoke during cold starting
Reduction of the duration of advanced timing (cold mode)
Reduction of ether injectionThe ECM automatically turns off one electronic unit injector at a time during the following occurrences:
Cold start-up
Extended time at low idleThe ECM monitors the change of the fuel rack in order to determine if a cylinder is firing. If the cylinder is firing, the ECM activates the electronic unit injector. If the cylinder is not firing, the electronic unit injector remains deactivated. This reduces white smoke.The following conditions must be met in order to activate the Cold Cylinder Cutout:
The Cold Cylinder Cutout parameter is programmed to "ENABLE".
The fuel rack is less than 13 mm (0.5 inch).
The jacket water coolant temperature is less than 63 °C (145 °F).The Cold Cylinder Cutout strategy is activated under either of the following conditions:
Ten seconds after the engine reaches the low idle rpm
Three seconds after ether injection is completedThe following conditions will deactivate the Cold Cylinder Cutout:
The Cold Cylinder Cutout parameter is programmed to "DISABLED".
The jacket water coolant temperature is more than 70 °C (158 °F).
A Cat ET is used for the cold cylinder cutout test.
The ether injection system is used.
The coolant temperature sensor has failed.
The engine is operating at a certain rpm when the Cold Cylinder Cutout is activated. If the
"Crank Duration"
"Maximum Number Of Crank Cycles"The zero settings prevent the Electronic Control Module (ECM) from engaging the starting motors. The settings must be reprogrammed before the engine will crank.Ensure that the "Air Shutoff" and the "Ether Control" parameters are "Enabled/ON" (if equipped). If the engine does not have these options, ensure that these two parameters are "DISABLED/OFF".If the engine is equipped with Prelube, the "Engine Prelube Duration" must be programmed to a value that is greater than zero seconds. Otherwise, the prelube pump will not cycle. If the engine is not equipped with Prelube, the parameter must be programmed to zero.The engine will have either jacket water aftercooling or separate circuit aftercooling. The correct configuration of the aftercooling system must be programmed.No password is required for programming a new ECM during the first 100 hours of service life. Free configuration feature enables the customer to tailor the programmable setpoints to the requirements of the installation during the 100 hours. Exceptions are "Fuel Limit" and "Personality Module Mismatch".Air Shutoff
Note: This is an optional feature.The air shutoff uses a moving plate to block inlet air to the aftercooler. The engine stops because of the restricted air supply to the combustion chamber. The air shutoff only actuates for the following conditions:
The Emergency Stop button is pressed.
An overspeed shutdown occurs.Both of the air shutoffs must be reset before the engine can be restarted.
Illustration 1 g00751561
Reset knob for the air shutoffTo reset the air shutoff, turn the reset knob to the "OPEN" position.Ensure that both of the air shutoffs are reset.Cold Cylinder Cutout
Note: This feature can be enabled or disabled with a Cat ET.The Cold Cylinder Cutout feature provides the following benefits:
Reduction of white smoke during cold starting
Reduction of the duration of advanced timing (cold mode)
Reduction of ether injectionThe ECM automatically turns off one electronic unit injector at a time during the following occurrences:
Cold start-up
Extended time at low idleThe ECM monitors the change of the fuel rack in order to determine if a cylinder is firing. If the cylinder is firing, the ECM activates the electronic unit injector. If the cylinder is not firing, the electronic unit injector remains deactivated. This reduces white smoke.The following conditions must be met in order to activate the Cold Cylinder Cutout:
The Cold Cylinder Cutout parameter is programmed to "ENABLE".
The fuel rack is less than 13 mm (0.5 inch).
The jacket water coolant temperature is less than 63 °C (145 °F).The Cold Cylinder Cutout strategy is activated under either of the following conditions:
Ten seconds after the engine reaches the low idle rpm
Three seconds after ether injection is completedThe following conditions will deactivate the Cold Cylinder Cutout:
The Cold Cylinder Cutout parameter is programmed to "DISABLED".
The jacket water coolant temperature is more than 70 °C (158 °F).
A Cat ET is used for the cold cylinder cutout test.
The ether injection system is used.
The coolant temperature sensor has failed.
The engine is operating at a certain rpm when the Cold Cylinder Cutout is activated. If the
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