Fault Phenomenon: Shantui SD32 dozer during ripping operation, the ripper shear pin breaks frequently.

Troubleshooting Process:
– Checked material: environment has large, unbreakable rocks.
– Checked pin: non-standard high-strength pin used (too hard).
– Checked hydraulics: system relief pressure set too high.
– Checked operation: excessive speed causing impact with ground.

Root Cause: The hydraulic system relief pressure is set too high, exceeding the shear strength of the shear pin, causing it to break before protecting the hydraulic system when encountering hard objects, or breaking too frequently.

Required Parts: Adjust system relief pressure to standard value, replace with standard shear pin.