Fault Phenomenon: Palazzani M20J articulating boom aerial work platform hydraulic oil appears milky white, system noisy, components damaged.

Troubleshooting Process:
– Checked tank cap: poor seal allowing water ingress.
– Checked cooler: water cooler internal leak.
– Checked breather: humid air ingress.
– Checked oil sample: excessive water content.

Root Cause: The hydraulic tank breather failed or the cooler leaked internally, allowing water to enter the hydraulic system.

Required Parts: Replace hydraulic oil, filter, and repair leak point.