How do I inspect excavator undercarriage wear and what should I check first?

Expert Answer

Start with a clean machine and a full walkaround, then check track tension, shoes, chain wear, rollers, idlers, sprockets and hardware. The quickest way to catch costly damage is to inspect the undercarriage before debris hides leaks, loose bolts or uneven wear. An excavator undercarriage works under constant shock and abrasion, so small issues often show up first as heat, noise, alignment problems or metal-to-metal contact.

Look for packed mud, stones or wire between the chain and frame, oil around roller or idler seals, hooked sprocket teeth, cracked or loose track shoe bolts, and uneven wear on one side of the machine. Compare left and right sides: a big difference often points to misalignment, tension problems or operating habits. Also check whether the track rides too tight or too loose, because both can accelerate wear.

A good inspection is not just visual. Measure wear at regular intervals and record it so you can spot trends before downtime starts. If you find repeating seal leaks, abnormal pitch wear, or a chain that no longer seats well on the sprocket, plan parts replacement early. VANROCK supplies excavator undercarriage parts through an appointed dealer network and quotes are provided on request. If you are working on a CAT, Komatsu, Volvo, or another OEM machine, VANROCK is an independent manufacturer and is not affiliated with the OEM.

Answered by VANROCK specialists · Published 9/23/2026