Fault Phenomenon: SANY SKT105S wide body mining truck a loud metallic impact sound comes from the dump body floor; inspection reveals wear plate detached.

Troubleshooting Process:
– Checked plug welds: plug welds cracked or broken.
– Checked steel plate: wear plate fatigued and broken.
– Checked installation: excessive installation clearance or poor fit.
– Checked material: impact from loading large, sharp ore.

Root Cause: The plug welding quality of the dump body floor wear plate was poor; the welds failed due to long-term high-frequency impact, causing the plate to detach.

Required Parts: Re-weld or replace wear plate, improve welding process.