Fault Phenomenon: General hydraulic forklift during lifting, the tank collapses, pump cavitates.

Troubleshooting Process:
– Checked breather: hole clogged.
– Checked dust: excessive dust.
– Checked freezing: frozen.
– Checked design: design flaw.

Root Cause: The tank breather is clogged with dust, causing negative pressure.

Required Parts: Tank breather cleaning or replacement.