If you own a Bobcat 753 skid steer loader and need to troubleshoot the ignition switch or replace it, you’re in the right place. In this article, we’ll provide you with a detailed guide on the ignition switch wiring diagram, its functions, and how to troubleshoot it.
Understanding the Ignition System in Bobcat 753
The ignition switch is a vital component in any vehicle or heavy machinery, including Bobcat 753. It is responsible for the flow of electricity from the battery to the starter, turning the engine on and off. The ignition switch has three positions: OFF, ON, and START. In the OFF position, the contacts are open, breaking the circuit and stopping the electrical flow. In the ON position, the contacts are closed, enabling the flow of electricity to the different components, such as the fuel pump, gauges, and lights. In the START position, the ignition switch sends power to the starter motor, engaging the engine.
The ignition switch is susceptible to wear and tear due to frequent use and exposure to harsh working conditions. When the ignition switch fails, it can cause various problems, such as the engine not starting, the starter motor not engaging, or the accessories not working. Therefore, it’s crucial to diagnose and fix any ignition switch issues as soon as possible.
Bobcat 753 Ignition Switch Wiring Diagram
The Bobcat 753 ignition switch wiring diagram consists of six wires that connect to the switch, as follows:
| Wire Color | Function |
|---|---|
| Red | Battery positive |
| Black | Ground |
| White | Accessory power |
| Yellow | Start signal |
| Blue | Ignition power |
| Green | Starter motor |
It’s essential to know which wire performs which function to troubleshoot any issues effectively. The ignition switch wiring diagram can also help you identify any wiring mistakes or damages that might cause problems.
How to Troubleshoot Bobcat 753 Ignition Switch
If you’re experiencing any ignition switch issues in your Bobcat 753, you can troubleshoot them using the following steps:
Step 1: Test the Battery Voltage and Ground Connection
The first step in diagnosing any electrical issue in your Bobcat 753 is to check the battery voltage and ground connection. Use a multimeter to test the battery voltage and ensure it’s within the recommended range (12.6-12.8 volts). Also, check the ground connection and make sure it’s tight and clean.
Step 2: Check the Ignition Switch Wires
Use the wiring diagram to check the ignition switch wires for any damages, breaks, or loose connections. Make sure to inspect the wires thoroughly, including the terminals and connectors. If you find any issues, repair or replace the affected wires.
Step 3: Test the Ignition Switch
The final step is to test the ignition switch itself. Use a multimeter to check the continuity of the switch in the different positions: OFF, ON, and START. The switch should have continuity in the ON and START positions and no continuity in the OFF position. If the switch fails the continuity test, replace it with a new one.
FAQs
Q: How do I know if my Bobcat 753 ignition switch is faulty?
A: You can tell if your Bobcat ignition switch is faulty if the engine fails to start, the starter motor doesn’t engage, or the accessories don’t work. Also, you might notice other symptoms, such as flickering lights, intermittent power loss, or clicking sounds when turning the key.
Q: Can I replace the Bobcat 753 ignition switch on my own?
A: You can replace the Bobcat ignition switch on your own if you have some mechanical skills and experience. However, we recommend consulting the service manual or a certified technician to ensure proper installation and avoid any mistakes or damages.
Q: Where can I get a replacement ignition switch for my Bobcat 753?
A: You can purchase a replacement ignition switch from Bobcat authorized dealerships, online retailers, or aftermarket suppliers. Make sure to buy a high-quality and genuine part that fits your Bobcat 753 model and year.
Q: How much does it cost to replace a Bobcat 753 ignition switch?
A: The cost of replacing a Bobcat ignition switch varies depending on several factors, such as the model, year, location, and labor rates. However, you can expect to pay around $50-$150 for the switch itself and $100-$200 for the installation, totaling $150-$350.
Conclusion
The ignition switch is a crucial component in your Bobcat 753, responsible for starting and stopping the engine and powering the accessories. It’s essential to know the wiring diagram, functions, and troubleshooting steps to diagnose and fix any issues effectively. Make sure to follow the recommended safety measures, such as turning off the machine and disconnecting the battery, before working on the ignition switch.
