07-04-2025, 04:23 PM
1. Issue Overview
On the Panswork forum, a user reported electrical issues with their Bobcat 863 skid-steer loader, causing the auxiliary hydraulic function to be inoperative. Specifically, while the main hydraulic system functions normally, the auxiliary hydraulic system fails to activate. This issue likely stems from a problem with the electrical system, and it requires troubleshooting and resolution.
2. Common Causes
The issue of the auxiliary hydraulics not working on the Bobcat 863 is commonly caused by electrical system problems, including faulty connections, low battery voltage, blown fuses or relays, a malfunctioning electrical control module, or damaged wiring. By checking the electrical connections, battery, fuses and relays, ECM, and wiring, the issue can typically be resolved.
Regular maintenance and timely inspections of the electrical system will help prevent similar issues from occurring in the future. If the problem persists after troubleshooting, it is advisable to consult a professional technician for further diagnosis and repairs.
On the Panswork forum, a user reported electrical issues with their Bobcat 863 skid-steer loader, causing the auxiliary hydraulic function to be inoperative. Specifically, while the main hydraulic system functions normally, the auxiliary hydraulic system fails to activate. This issue likely stems from a problem with the electrical system, and it requires troubleshooting and resolution.
2. Common Causes
- Electrical Connection Issues
- Loose or poor electrical connections can prevent the auxiliary hydraulic system from receiving the necessary electrical signals to operate. Common problem areas include connectors, terminals, and switches that may suffer from corrosion, wear, or looseness.
- Loose or poor electrical connections can prevent the auxiliary hydraulic system from receiving the necessary electrical signals to operate. Common problem areas include connectors, terminals, and switches that may suffer from corrosion, wear, or looseness.
- Low Battery Voltage
- Insufficient battery voltage or a failing battery can disrupt the electrical system, preventing power from reaching various components, including the auxiliary hydraulics. Check the battery's voltage and condition to ensure it is providing adequate power.
- Insufficient battery voltage or a failing battery can disrupt the electrical system, preventing power from reaching various components, including the auxiliary hydraulics. Check the battery's voltage and condition to ensure it is providing adequate power.
- Blown Fuses or Faulty Relays
- The auxiliary hydraulic system may rely on specific fuses or relays for operation. If any of these components are blown or faulty, they can interrupt the electrical signal flow, preventing the auxiliary hydraulics from activating. Inspect and replace any damaged fuses or relays.
- The auxiliary hydraulic system may rely on specific fuses or relays for operation. If any of these components are blown or faulty, they can interrupt the electrical signal flow, preventing the auxiliary hydraulics from activating. Inspect and replace any damaged fuses or relays.
- Faulty Electrical Control Module
- The Bobcat 863 may have a malfunctioning electrical control module (ECM), which is responsible for transmitting electrical signals to the auxiliary hydraulic system. If the ECM is not functioning correctly, it could fail to send the proper signals. In this case, the ECM may need to be repaired or replaced.
- The Bobcat 863 may have a malfunctioning electrical control module (ECM), which is responsible for transmitting electrical signals to the auxiliary hydraulic system. If the ECM is not functioning correctly, it could fail to send the proper signals. In this case, the ECM may need to be repaired or replaced.
- Shorted or Damaged Wiring
- Damaged or short-circuited electrical wires can disrupt the flow of electrical signals, preventing the auxiliary hydraulics from operating. A thorough inspection of the wiring is necessary to identify any faults.
- Damaged or short-circuited electrical wires can disrupt the flow of electrical signals, preventing the auxiliary hydraulics from operating. A thorough inspection of the wiring is necessary to identify any faults.
- Check Electrical Connections
- Inspect all electrical connections, including connectors, terminals, and switches, for any loose or corroded parts. If any issues are found, clean or reconnect the components to ensure proper electrical contact.
- Inspect all electrical connections, including connectors, terminals, and switches, for any loose or corroded parts. If any issues are found, clean or reconnect the components to ensure proper electrical contact.
- Check Battery Voltage
- Use a multimeter to check the battery voltage to ensure it is within the correct range for starting the electrical system. If the voltage is low, recharge the battery or replace it if necessary.
- Use a multimeter to check the battery voltage to ensure it is within the correct range for starting the electrical system. If the voltage is low, recharge the battery or replace it if necessary.
- Inspect Fuses and Relays
- Refer to the user manual to locate the fuses and relays that control the auxiliary hydraulics. Check for any blown fuses or faulty relays and replace them as needed.
- Refer to the user manual to locate the fuses and relays that control the auxiliary hydraulics. Check for any blown fuses or faulty relays and replace them as needed.
- Check the Electrical Control Module
- If the problem persists, the ECM may be at fault. Use diagnostic tools to check for any error codes or malfunctions. If the ECM is identified as faulty, consider repairing or replacing it.
- If the problem persists, the ECM may be at fault. Use diagnostic tools to check for any error codes or malfunctions. If the ECM is identified as faulty, consider repairing or replacing it.
- Inspect Electrical Wiring
- Carefully inspect the electrical wiring for signs of damage, short circuits, or wear. Repair or replace any damaged wiring to restore proper signal transmission.
- Carefully inspect the electrical wiring for signs of damage, short circuits, or wear. Repair or replace any damaged wiring to restore proper signal transmission.
The issue of the auxiliary hydraulics not working on the Bobcat 863 is commonly caused by electrical system problems, including faulty connections, low battery voltage, blown fuses or relays, a malfunctioning electrical control module, or damaged wiring. By checking the electrical connections, battery, fuses and relays, ECM, and wiring, the issue can typically be resolved.
Regular maintenance and timely inspections of the electrical system will help prevent similar issues from occurring in the future. If the problem persists after troubleshooting, it is advisable to consult a professional technician for further diagnosis and repairs.
