ENGINE AR-PRIMARY 4429964 - Caterpillar

Illustration 1 g06058352
Operator Platform
(1) Power distribution modulePower distribution module (1) is mounted to the left door of the air-to-air aftercooler compartment, below the machine key switch panel. The left compartment door provides access to the module.Power distribution module (1) houses a printed circuit board that uses fuses and relays attached to the board to distribute power. Power is distributed from switched, and unswitched, fuses and relays inside the module to components in the auxiliary system.
Illustration 2 g06058354
Power Distribution Module
(2) Truck hitch open relay
(3) Truck hitch close relay
(4) Auger raise relay
(5) Auger lower relay
(6) Left tow point lower relay
(7) Left tow point raise relay
(8) Right tow point lower relay
(9) Right tow point raise relay
(10) Apron fold down relay
(11) Apron fold up relay
(12) Ventilation enable relayThe relays inside the power distribution module are located under the module cover plate. The module cover plate must be removed to access the relays.The power distribution module contains components used in the auxiliary system. The module contains the following components:
Truck hitch open relay (2) and truck hitch close relay (3)
Auger raise relay (4) and auger lower relay (5)
Left tow point lower relay (6) and left tow point raise relay (7)
Right tow point lower relay (8) and right tow point raise relay (9)
Apron fold down relay (10) and apron fold up relay (11)
Ventilation enable relay (12)Note: The four tow point relays are installed on all machines. However, these relays are only used when an aftermarket grade and slope system is installed on the machine.
Illustration 3 g06057856
Left Side of Machine
(13) Screed-assist pressure sensorScreed-assist pressure sensor (13) is on the back of the auxiliary manifold, on the left side of the machine. The left side compartment door provides access to the manifold.Screed-assist pressure sensor (13) provides input signals to the machine ECM. Pressure sensor inputs are transferred to the display via CAN communications lines. Information from the sensor is read on the display. Screed-assist pressure is adjustable through display input.
Illustration 4 g06058192
Left Hopper Door
(14) Hopper door switchThe hopper door switch (14) is located behind the left hopper door. The left hopper door provides access to this switch.The hopper door switch (14) is a push-button switch. The contacts are normally open. When the left hopper door is open, the circuit across the hopper door switch is open. When the left hopper door is closed, the hopper door actuates the switch, and the circuit across the switch is closed.The hopper door switch (14) provides an input signal to the machine ECM. When the left hopper door is open, the hoppers, the apron, and the conveyors are disabled. In this case, a message is sent to the operator display indicating the door is open and the systems are disabled.
Illustration 5 g06058358
Operator Station Support Column
(15) Force feedback moduleForce feedback module (15) is located in each support column below the tractor operator stations. The cover on the support columns provides access this component.The force feedback module (15) is directly driven by the steering wheel. The module contains an encoder and a feedback solenoid that are monitored and