Track replacement is the best time to inspect a compact track loader undercarriage because the wear parts are exposed and the old belt can tell you what was happening underneath it.
1. Read the old track before you remove it
Uneven tread, damaged drive lugs, sidewall rubbing and repeated de-tracking marks can point to alignment, sprocket or roller problems.
2. Inspect sprocket teeth
Look for hooking, sharp points, uneven tooth height and one-sided wear. The tooth should enter and leave the track drive lug smoothly.
3. Check every roller
Spin the rollers where practical and inspect for leakage, play, binding, flat spots and damaged flanges. One seized roller can create concentrated heat and wear on a new track.
4. Inspect the idlers
Check bearing play, seal condition, flange wear and alignment. A loose or damaged idler is a common contributor to a track walking off.
5. Check the tension system
Make sure the adjuster moves, holds pressure and has usable travel. Do not use over-tensioning to hide worn components.
6. Clean and inspect the frame
Remove packed dirt, rock and debris. Look for bent guards or steel contact points that can rub the belt.
7. Verify the new track before installation
Match width, pitch, link count and guide family. If the old marking is missing, use the track-identification guide.
When both tracks are similarly worn, see Should You Replace Rubber Tracks in Pairs?.