Bobcat T190 Sprockets: Maintenance, Troubleshooting, and Replacement

[MikePhua]

The Bobcat T190, part of the renowned Bobcat T-Series, is a versatile and reliable skid-steer loader widely used in construction, landscaping, and agriculture. Among the critical components that ensure the performance and longevity of this machine are the sprockets, which play a significant role in driving the tracks and maintaining efficient movement. Sprockets, along with the track system, are essential for ensuring smooth operation in rugged environments. Understanding how to maintain and replace them can save both time and money for operators and equipment owners.
This article dives into the importance of sprockets in the Bobcat T190, the symptoms of sprocket wear, steps for replacement, and general troubleshooting to keep this vital component in optimal condition.
The Role of Sprockets in Track Systems
Sprockets are vital components in the track drive system of skid-steer loaders like the Bobcat T190. These toothed wheels are responsible for engaging the track, which is a key part of the undercarriage system. They mesh with the track links to propel the machine forward or backward and to maintain traction, particularly on uneven terrain or in tough working conditions. The sprocket helps distribute the load and prevent excessive wear on other parts of the track system, such as the rollers and idlers.
The Bobcat T190 uses a rubber track system, which offers several advantages over traditional wheels, such as better flotation on soft ground, reduced ground damage, and improved traction on slopes and rough terrain. However, for the track system to work effectively, the sprockets need to be in top shape. Regular inspection and maintenance of sprockets can prevent more costly repairs or failures in the long run.
Symptoms of Worn Sprockets
Sprockets don’t last forever, and their wear can significantly affect the performance of the T190. While the frequency of wear depends on the working conditions and maintenance schedule, there are several key signs to watch for:

1. Excessive Track Slippage: If the sprockets are worn or damaged, the tracks may begin slipping more than usual. You may notice that the machine doesn’t maintain traction, especially when operating on inclines or loose soil.
   
2. Uneven Track Wear: When the sprockets are not engaging properly with the track links, uneven wear on the tracks may occur. This can lead to the track running out of alignment or becoming misaligned, which can affect the overall stability of the loader.
   
3. Noise During Operation: A worn sprocket may produce a grinding or clicking noise as the teeth no longer mesh properly with the track links. This noise can often be heard during turns or when the machine is under heavy load.
   
4. Visible Damage to Teeth: The most obvious sign of sprocket wear is the condition of the teeth. If the sprocket teeth are chipped, broken, or excessively worn down, they may no longer engage the track properly, causing damage to the track system and impacting the overall performance.
   
5. Difficulty Turning or Steering: A damaged sprocket may result in difficulty steering or turning the machine, as the tracks may not move smoothly in response to the operator’s commands.
   

Steps for Replacing Bobcat T190 Sprockets
Replacing the sprockets on a Bobcat T190 isn’t an overly complex task, but it does require careful attention to detail and proper tools. Here’s a step-by-step guide to help with the process:

1. Prepare the Work Area: Before beginning any work, ensure that the Bobcat T190 is parked on a level surface. Disconnect the battery to prevent any accidental movement or electrical issues during the replacement process.
   
2. Lift the Machine: Use a lift or jack to raise the rear of the T190 off the ground. Make sure that the machine is secure, and place safety blocks or stands to prevent it from falling.
   
3. Remove the Tracks: To access the sprockets, the tracks must first be removed. Loosen the tension on the tracks using the track tension adjuster, and then carefully remove the track bolts or pins. Once these are removed, slide the tracks off the sprockets.
   
4. Remove the Old Sprockets: Once the tracks are removed, use a wrench or impact tool to remove the bolts securing the old sprockets to the axle. Depending on the machine’s configuration, you may need to remove other components (such as the idler) to make space for the new sprockets.
   
5. Install the New Sprockets: Place the new sprockets onto the axle, ensuring that the teeth align correctly with the track links. Tighten the sprocket bolts securely, ensuring that they are torqued to the manufacturer’s specifications.
   
6. Reinstall the Tracks: After the new sprockets are in place, reinstall the tracks by positioning them around the sprockets and using the track adjuster to tighten them. Ensure that the tracks are aligned properly to avoid future wear.
   
7. Test the Machine: Once everything is reassembled, test the machine by operating it slowly. Listen for any unusual noises and check for proper track engagement. If everything runs smoothly, the replacement is complete.
   

Troubleshooting Common Sprocket Problems

1. Track Slippage Despite New Sprockets: If you’ve recently replaced the sprockets but are still experiencing track slippage, check the track tension. Under-tensioned tracks can slip off the sprockets, leading to performance issues. Use the track tension adjuster to ensure that the tracks are properly tightened.
   
2. Continued Noise: If you hear noise after replacing the sprockets, it could indicate that other parts of the track system are worn, such as the rollers, idlers, or the track itself. Inspect the entire undercarriage system to identify and replace any damaged parts.
   
3. Misalignment: If the tracks are misaligned after sprocket replacement, it may be due to improper installation. Double-check that the sprockets are properly aligned with the tracks and that they are securely fastened. In some cases, a misalignment could indicate that the frame or the track system has been damaged and may need further repair.
   

Maintenance Tips for Prolonging Sprocket Life
Preventative maintenance is key to extending the life of your sprockets and ensuring smooth operation of the Bobcat T190. Here are a few tips to help:

1. Regular Inspections: Check the sprockets for wear every 100 hours of operation. Look for worn teeth, cracks, or excessive build-up of dirt and debris. Early detection of damage will help prevent more extensive repairs.
   
2. Track Maintenance: Keep the tracks clean and free of debris, as dirt and mud can wear down the sprockets and other track components. Regularly wash the undercarriage to remove buildup.
   
3. Proper Track Tension: Always maintain the correct track tension, as too much slack or too much tension can lead to rapid sprocket wear. Refer to the Bobcat T190 manual for the correct tension specifications.
   
4. Avoid Excessive Weight: Be mindful of the weight load you place on the machine. Overloading the Bobcat T190 can put excessive stress on the sprockets and tracks, leading to premature wear and potential failure.
   

Conclusion
Sprockets play an essential role in the overall functionality and performance of the Bobcat T190. Regular maintenance and timely replacement of worn sprockets are necessary to ensure that the machine continues to operate efficiently and effectively. By following proper replacement procedures and conducting routine inspections, you can extend the lifespan of the sprockets and other undercarriage components, ensuring that your Bobcat T190 remains a reliable tool for years to come.