Fault Phenomenon: XCMG XR360 rotary drilling rig when suspending a load on the auxiliary winch, the wire rope automatically slides down.

Troubleshooting Process:
– Checked brake: brake pads worn excessively.
– Checked counterbalance valve: internal leakage or stuck.
– Checked hydraulic motor: motor internal leakage.
– Checked wire rope: wire rope spooling tangled.

Root Cause: The auxiliary winch brake pads are excessively worn, resulting in insufficient braking torque to hold the load.

Required Parts: Replace auxiliary winch brake pads.