Fault Phenomenon: Komatsu D275A dozer blade cutting edge wears faster in the middle than at the ends.

Troubleshooting Process:
– Checked crown: incorrect blade arc setting.
– Checked angle: excessive blade cutting angle.
– Checked material: uneven material hardness.
– Checked material: uneven heat treatment of cutting edge.

Root Cause: Improper blade arc adjustment caused higher contact pressure in the center, accelerating wear.

Required Parts: Adjust blade arc or flip/replace cutting edge.