1535754 ENGINE AR-COMPLETE Caterpillar parts
C-10
Rating:
Alternative (cross code) number:
CA1535754
153-5754
1535754
CA1535754
153-5754
1535754
TRUCK ENGINE,
Related part:
1535754
SHORT BLOCK
0R9661
R
Compatible equipment models: 1535754:
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Information:
Input Signals
Illustration 1 g06174660
Steering Control System
(1) Machine ECM
(2) Engine ECM
(3) Hydraulic temperature sender
(4) Steering encoder
(5) Steering angle position sender
(6) Warmup solenoid
(7) Steering shunt solenoid
(8) Front CCW solenoid
(9) Front CW solenoid
(10) Output signal
(11) Input signal
(12) CAN communicationNote: The blue lines in the illustration indicate an input signal. The red lines indicate an output signal. The red and blue lines indicate two-way communication.Note: The illustration shows the general layout of the steering system. Refer to the machine electrical schematic for detailed wiring information.Machine ECM (1) monitors input signals from the following components to control the steering system:
Steering angle position sensor (5)
Steering encoder (4)Engine ECM (2) monitors the signal from hydraulic temperature sender (3). The engine ECM transmits this information to machine ECM (1) through the CAN lines.The illustration shows the connections of direct input signals (11) in blue. Input signals are also sent through the CAN lines. CAN communication (12) devices are shown with a blue-and-red-stripe connection in the illustration.Output Signals
Machine ECM (1) energizes steering shunt solenoid (7) when the steering system is enabled or when the warmup valve is energized.Steering shunt solenoid (7) enables and disables the steering system. When the steering shunt solenoid is energized, the steering shunt valve is closed and oil from the steering pump is routed to the steering control valve. In this case, the steering system is enabled. When the steering shunt solenoid is de-energized, the steering shunt valve opens and hydraulic oil from the steering pump is sent directly to the hydraulic tank. In this case, the steering system is disabled.Machine ECM (1) evaluates the input signals and determines if any output signals should be sent to steering solenoids (8) and (9).When the system determines that the hydraulic oil temperature is below operating requirements, machine ECM (1) energizes warmup valve solenoid (6).The warmup valve controls hydraulic pressure in the steering manifold and raises pressure to the setpoint of the relief valve. When warmup valve solenoid (6) is energized, hydraulic pressure increases to the setpoint of the steering relief valve. As hydraulic oil is forced through the relief valve, the oil heats up.Steering encoder (4) includes an electronically controlled friction device to control the force required to turn the steering wheel. Machine ECM (1) transmits a signal to control the friction device. This device applies a variable force to the steering wheel that causes the wheel to resist turning. The friction device is activated when the steering system is enabled. When the machine has reached the mechanical steering limit, the highest friction level is applied to lock the steering wheel. The friction level is proportional to the difference between the desired steering angle and the actual steering angle. The desired steering angle is determined by the steering encoder. The actual steering angle is determined by the steering angle position sensor. The friction level prevents the operator from turning the steering wheel faster than the machine can respond.Operating Logic
The steering system is a closed loop system that is position controlled. Steering angle position sensor (5) measures
Illustration 1 g06174660
Steering Control System
(1) Machine ECM
(2) Engine ECM
(3) Hydraulic temperature sender
(4) Steering encoder
(5) Steering angle position sender
(6) Warmup solenoid
(7) Steering shunt solenoid
(8) Front CCW solenoid
(9) Front CW solenoid
(10) Output signal
(11) Input signal
(12) CAN communicationNote: The blue lines in the illustration indicate an input signal. The red lines indicate an output signal. The red and blue lines indicate two-way communication.Note: The illustration shows the general layout of the steering system. Refer to the machine electrical schematic for detailed wiring information.Machine ECM (1) monitors input signals from the following components to control the steering system:
Steering angle position sensor (5)
Steering encoder (4)Engine ECM (2) monitors the signal from hydraulic temperature sender (3). The engine ECM transmits this information to machine ECM (1) through the CAN lines.The illustration shows the connections of direct input signals (11) in blue. Input signals are also sent through the CAN lines. CAN communication (12) devices are shown with a blue-and-red-stripe connection in the illustration.Output Signals
Machine ECM (1) energizes steering shunt solenoid (7) when the steering system is enabled or when the warmup valve is energized.Steering shunt solenoid (7) enables and disables the steering system. When the steering shunt solenoid is energized, the steering shunt valve is closed and oil from the steering pump is routed to the steering control valve. In this case, the steering system is enabled. When the steering shunt solenoid is de-energized, the steering shunt valve opens and hydraulic oil from the steering pump is sent directly to the hydraulic tank. In this case, the steering system is disabled.Machine ECM (1) evaluates the input signals and determines if any output signals should be sent to steering solenoids (8) and (9).When the system determines that the hydraulic oil temperature is below operating requirements, machine ECM (1) energizes warmup valve solenoid (6).The warmup valve controls hydraulic pressure in the steering manifold and raises pressure to the setpoint of the relief valve. When warmup valve solenoid (6) is energized, hydraulic pressure increases to the setpoint of the steering relief valve. As hydraulic oil is forced through the relief valve, the oil heats up.Steering encoder (4) includes an electronically controlled friction device to control the force required to turn the steering wheel. Machine ECM (1) transmits a signal to control the friction device. This device applies a variable force to the steering wheel that causes the wheel to resist turning. The friction device is activated when the steering system is enabled. When the machine has reached the mechanical steering limit, the highest friction level is applied to lock the steering wheel. The friction level is proportional to the difference between the desired steering angle and the actual steering angle. The desired steering angle is determined by the steering encoder. The actual steering angle is determined by the steering angle position sensor. The friction level prevents the operator from turning the steering wheel faster than the machine can respond.Operating Logic
The steering system is a closed loop system that is position controlled. Steering angle position sensor (5) measures