Bob Tach Failure Diagnosis and Solutions

[MikePhua]

Bob Tach is a critical feature on Bobcat skid steers, allowing for quick attachment changes such as buckets, forks, and breakers. The system connects attachments via hydraulic and mechanical means, ensuring safe and fast attachment changes. When functioning properly, the Bob Tach system increases efficiency and reduces operator downtime.
Common Causes of Bob Tach Failures

1. Hydraulic Issues: The hydraulic system plays a key role in the connection and disconnection of attachments in the Bob Tach system. If there are hydraulic problems, it can cause the Bob Tach to malfunction. Common hydraulic issues include pump failure, hose leaks, or low hydraulic fluid levels.
   
2. Electrical Failures: Bob Tach systems are often equipped with electronic components to activate hydraulic functions. Electrical issues, such as short circuits, poor connections, or faulty sensors, can prevent the system from functioning correctly.
   
3. Mechanical Failures: Mechanical parts like locks and pins in the Bob Tach system can wear out or corrode over time, preventing proper attachment connection. If locks jam or pins fall out, the attachment system will fail to work as intended.
   

Diagnosing Bob Tach Failures

1. Check Hydraulic Fluid: The first step in diagnosing a hydraulic issue is to check the hydraulic fluid levels and quality. Make sure there are no leaks or contamination in the system. If the fluid is dirty or low, it should be topped up or replaced.
   
2. Inspect Electrical Connections: Inspect all electrical wiring and connectors for loose connections or corrosion. Use a multimeter to check sensors and switches to ensure proper signal transmission.
   
3. Examine Mechanical Connections: Check the Bob Tach locking mechanism and pins for any signs of wear, damage, or rust. If the components are loose or broken, they need to be repaired or replaced.
   

Solutions to Bob Tach Failures

1. Hydraulic Repairs: If hydraulic issues are found, start by checking the oil pump and hoses for leaks or blockages. Replace damaged hydraulic components to restore system functionality.
   
2. Electrical Repairs: If electrical issues are identified, inspect all related wiring, connectors, and switches. Make sure the battery is charged and the circuit is intact. If sensors are faulty, replace them as needed.
   
3. Mechanical Repairs: If the locking mechanism or pins are damaged, replace them immediately. Clean any jammed components to ensure smooth operation.
   

Preventive Measures

1. Regular Maintenance and Inspections: Perform routine checks on the hydraulic, electrical, and mechanical systems to ensure everything is in good condition. Change the hydraulic oil and replace oil filters on a regular schedule.
   
2. Proper Operation: Avoid overloading the machine and refrain from rapidly changing attachments frequently. This helps reduce wear on mechanical components.
   
3. Operator Training: Ensure that operators understand the proper procedure for using the Bob Tach system. Training should include safe attachment mounting and dismounting to avoid damage to the system.
   

Conclusion
Bob Tach failures are typically due to hydraulic, electrical, or mechanical problems. Regular maintenance and proper operation can help prevent these issues. If a failure occurs, prompt diagnosis and repair are crucial to ensure the continued functionality of the machine and its attachments.