Fault Phenomenon: Bauer BG30 rotary drilling rig mast sticks when luffing, piston rod visibly bent.

Troubleshooting Process:
– Checked load: mast forced luff against obstacle.
– Checked synchronization: dual cylinder action out of sync.
– Checked material: insufficient piston rod strength.
– Checked guidance: cylinder mounting bracket deformed.

Root Cause: Improper operation caused the mast to be loaded on one side or forced operation after bottoming out, causing the cylinder to bear a side load and bend.

Required Parts: Replace luffing cylinder assembly.