Fault Phenomenon: Caterpillar 950 wheel loader front tires show sawtooth or severe single-sided wear on the inner or outer edge.

Troubleshooting Process:
– Checked toe-in: excessive front wheel toe-in deviation.
– Checked kingpins: excessive wear clearance in steering kingpins and bushings.
– Checked tire pressure: long-term underinflation or overinflation.
– Checked driving habits: frequent in-place turning.

Root Cause: Severe wear of steering kingpins and bushings caused changes in front wheel alignment parameters (toe-in), resulting in wheel wobble and abnormal tire wear during driving.

Required Parts: Replace steering kingpins and bushings, readjust front wheel toe-in.