Fault Phenomenon: Manitou 120ATJ articulating boom aerial work platform during operation, a hydraulic hose at the boom root suddenly bursts, oil sprays.

Troubleshooting Process:
– Checked hose exterior: outer layer aged and cracked.
– Checked system pressure: pressure spike too high.
– Checked routing: hose rubbing against structure.
– Checked fittings: fittings loose.

Root Cause: The hydraulic hose aged, reducing its pressure resistance, combined with mechanical interference wear, led to bursting.

Required Parts: High-pressure hydraulic hose assembly.