TURBOCHARGER GP 3043748 - Caterpillar

Illustration 7 g03235722Note: The values in Table 6 are for bench testing only. Values may not represent parameters for machine systems specifications.
Table 6
Rotational Range 24.15° Angular Rotation
Output Signal 500 100 Hz
Output PWM 8% - 92%
Rating + 7V ~ +12V DC Switches
Pressure Switch
Illustration 8 g02332474Note: The values in Table 7 are for bench testing only. Values may not represent parameters for machine systems specifications.
Table 7
Activation Pressure 490 49 kPa (71 7 psi)
Deactivation Pressure 294 kPa (43 psi) MIN
Rating + 12V ~ +32V
0.01 Amp to 1 Amp
Pressure Range 0 to 10 MPa Left Travel Pressure Switch and Right Travel Pressure Switch
The left travel pressure switch and right travel pressure switch detects a travel operation. The travel pressure switches send an input signal to the machine ECM. The machine ECM uses the switch information to control the engine speed and pump control.Outputs
The ECM responds to decisions by sending electrical signals to the outputs. The outputs can create an action or the outputs can provide information to the operator or the service technician.Solenoids
On/Off Solenoids
Illustration 9 g01158530Note: The values in Table 8 are for bench testing only. Values may not represent parameters for machine systems specifications.
Table 8
Rated Voltage 24 VDC
Coil Resistance 32.0 3.2Ω (T=20° C) Drive Pump Bypass Cut PHMV and Idler Pump Bypass Cut PHMV
The pump bypass cut PHMV's are proportional hydraulic modulation valves that adjust the opening of the valve stem based on the inputs to the Machine ECM. The Machine ECM uses the joystick position sensor to determine the position of the bypass valve stem. When the operator is not requesting an implement operation, the hydraulic oil flows through the bypass cut valve stems and returns to the hydraulic tank.The drive pump and idler pump bypass cut PHMVs control the standby pressure when all the joysticks are in the NEUTRAL position. When the activation lever is in the UNLOCKED position, the bypass cut PHMV's maintain standby pressure at a higher pressure than when the activation lever is in the LOCKED position.Travel Speed Solenoid
The travel speed solenoid is an output of the Machine ECM. When the travel speed solenoid is active, the machine can travel at high speed. The travel speed solenoid is active when the travel speed mode switch is set to "RABBIT (high)" mode. The travel speed also depends on the delivery pressure of the main pump. If the delivery pressure of the main pump is high, the travel speed solenoid is de-energized. When the delivery pressure of the main pump is low, the travel speed solenoid is energized.Hydraulic Lock Solenoid
The hydraulic lock solenoid is an output of the Machine ECM. The hydraulic lock solenoid is energized in order to enable the primary hydraulic pressure. The hydraulic lock solenoid is de-energized in order to disable the primary hydraulic pressure.This solenoid is activated while the key switch is in the ON position and the hydraulic lock lever is in the UNLOCK position.Flow Combiner PHMV
The flow combiner PHMV has three positions and is located within the