TUBE AS 3521964 - Caterpillar

Direction/Speed Selector Switch
Illustration 1 g00871793
(1) Direction selector switch. (2) Speed selector switch.
Illustration 2 g00931553
Power Train PumpDirection selector switch (1) and the door switch control the flow of electricity to proportional solenoids (3) and (4). Direction selector switch (1) must be moved in either FORWARD position or REVERSE position in order to drive the machine. The machine will not move in any direction when the door is open. The door must be closed in order to activate the door switch. If the door switch is not active or the door is open, the machine will not move.
Illustration 3 g00931555
(5) High/low gear valve.Speed selector switch (2) controls the flow of electricity to high/low gear valve (5). High/low gear valve (5) controls the gear position on the transmission gearbox.Differential Lock Switch
Illustration 4 g00871851
Differential Lock Switch
Illustration 5 g00929775
Differential Lock ValveThe differential lock switch controls the flow of electricity to the differential lock valve. The differential lock valve is an on/off solenoid that controls the engagement of the differential lock in the front axle and the rear axle. When the differential lock switch is pressed, a signal is received by the IQAN. The IQAN will activate the differential lock valve. The IQAN will automatically deactivate the differential lock if the ground speed goes above 5 km/h (3 mph).Parking Brake Switch
Illustration 6 g00932334
Parking Brake Switch
Illustration 7 g00931597
(6) Ladder valve. (7) Parking brake valve.The parking brake switch controls the flow of electricity to parking brake valve (7) and ladder valve (6). Parking brake valve (7) and ladder valve (6) are on/off solenoids. Ladder valve (6) controls the access ladder on the machine. Parking brake valve (7) controls the engagement of the parking brake in the front and the rear axle.Note: The IQAN system must receive two electrical signals in order to send the signal to parking brake valve (7). The parking brake switch must be in the OFF position and the "Minimum Current" signal from the accelerator pedal must flow to a proportional solenoid on the power train pump.Four/eight Wheel Drive Switch
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Four/eight Wheel Drive Switch
Illustration 9 g00931648
Four/eight Wheel Drive ValveThe four/eight wheel drive switch controls the flow of electricity to the four/eight wheel drive valve. The four/eight wheel drive valve is an on/off solenoid that disengages the rear output shaft of the transmission gearbox. When the four/eight wheel drive switch is activated, a signal is received by the IQAN. The IQAN will then activate four/eight wheel drive valve.Machine Shutdown Switch
Illustration 10 g00932299
When the machine shutdown switch is activated electricity is cut off and the engine is shut off.