Fault Phenomenon: Caterpillar AP555F paver hydraulic tank collapses, pump suction difficult.

Troubleshooting Process:
– Checked breather: breather filter clogged with dust.
– Checked tank cap: tank cap seal too tight.
– Checked environment: extremely high dust levels.
– Checked structure: insufficient tank strength.

Root Cause: The hydraulic tank breather filter is completely clogged with fine dust, creating a vacuum inside the tank during pump suction, causing it to collapse.

Required Parts: Replace hydraulic tank breather filter.