Understanding and Troubleshooting Track Issues on the PC75UU-2

[MikePhua]

When operating heavy machinery like the Hitachi PC75UU-2, keeping the undercarriage in good shape is vital for ensuring efficiency and longevity. Tracks, in particular, are a key component that directly influences the overall performance of the machine. Whether it's an issue of wear and tear or an alignment problem, understanding track-related concerns will help minimize downtime and maintenance costs.
Common Track Issues on the PC75UU-2
Tracks on compact excavators such as the PC75UU-2 are essential for mobility across uneven terrain. Over time, however, these tracks can wear down or face other operational issues, which can affect performance. The most common problems operators may face with the tracks include:

1. Track Tensioning Problems: One of the most common issues on tracked machines is improper tension. Too tight or too loose tracks can lead to uneven wear, excessive strain on the track drive system, and even premature failure of other parts like the sprockets or rollers. A machine like the PC75UU-2 relies on the correct tension for optimal traction and efficient operation.
   
2. Track Misalignment: Tracks that are not aligned correctly can cause uneven wear and potential damage to both the tracks and the undercarriage. Misalignment can be caused by a variety of factors, including faulty components, poor maintenance practices, or improper installation of the tracks.
   
3. Track Wear: Prolonged use or use in harsh conditions can result in wear on the track pads, chains, and sprockets. Excessive wear leads to poor traction, reduced performance, and, in the worst case, a complete failure of the track assembly.
   
4. Track Damage from Obstructions: Operating in areas with debris, rocks, or sharp objects can lead to damage to the track pads, causing chips or cracks. In severe cases, large objects might get caught in the track assembly, creating additional wear points or even breaking the track.
   

Identifying Track Problems
While some track issues are immediately noticeable, others may require a closer inspection. Here are some key signs to look for:

1. Uneven Wear Patterns: Regularly inspect the tracks for uneven wear across the track pads. Uneven wear can indicate that the tracks are either too tight, misaligned, or that the undercarriage components are damaged.
   
2. Excessive Track Noise: If the machine is making strange noises when moving, such as grinding or scraping sounds, it could be an indication of an issue with the track rollers, idlers, or the track itself.
   
3. Track Slippage: If the tracks are slipping, it may be a sign that the tension is too loose, or the sprockets are worn out and need to be replaced.
   
4. Loose or Damaged Track Pads: Loose or damaged track pads can cause instability and reduce traction, leading to slower operation or difficulty in maneuvering the machine.
   

Solutions to Common Track Problems
Once the issue is identified, the next step is fixing the problem. Depending on the type of issue, you can take different approaches:

1. Adjust Track Tension: Tension adjustments are necessary to ensure proper alignment and minimize wear. For the PC75UU-2, the track tension can usually be adjusted using a grease fitting on the idler. Ensure the tension is tight enough to prevent the track from sagging but not so tight that it causes unnecessary strain on the system.
   
2. Check and Replace Worn Components: If the tracks are showing significant wear or damage, it's important to inspect the track pads, chains, sprockets, and rollers. Worn-out components should be replaced to avoid further damage to the track system. Always use OEM parts to maintain machine performance.
   
3. Realign the Tracks: If the tracks are misaligned, carefully inspect the undercarriage and adjust the tension to align the tracks correctly. In some cases, damaged components like sprockets or rollers might need to be replaced to restore proper alignment.
   
4. Clean the Tracks Regularly: Keeping the tracks free of debris and dirt is essential for extending their life. Regular cleaning, especially after working in muddy or rocky conditions, prevents the buildup of materials that could damage the track or cause alignment problems.
   

Preventing Track Problems
To avoid frequent track issues, it’s essential to perform regular maintenance and adopt proactive measures:

1. Routine Inspections: Regularly check the tracks for wear, alignment, and damage. Catching small issues early can prevent major repairs down the line and improve the lifespan of the tracks.
   
2. Proper Lubrication: Make sure that the rollers and other undercarriage components are properly lubricated to minimize friction and reduce wear. This also helps prevent the tracks from getting too tight or loose.
   
3. Use the Machine on Suitable Terrain: If possible, avoid using the machine on rocky or debris-filled terrain that could cause damage to the tracks. When operating in tough conditions, consider using wider tracks or rubber pads to reduce the risk of damage.
   
4. Track Replacement Timing: Track replacement is inevitable over time, but replacing them before they become too worn down will ensure that the machine continues to perform at its best. Waiting too long can lead to additional damage to the undercarriage, which can be much more expensive to repair.
   

Conclusion
Maintaining the tracks on your PC75UU-2 or any similar machinery is essential for ensuring smooth operation and extending the life of the machine. Regular maintenance, proper tensioning, and quick repairs can prevent minor issues from becoming major problems. As with all heavy equipment, attention to detail and proactive care can save you money and keep your machine performing at its peak. Always stay on top of track maintenance, and consider consulting your equipment manual for specific maintenance schedules and advice tailored to your machine model.