Fault Phenomenon: Genie Z-45/25J articulating boom aerial work platform during boom extension/retraction, the platform shakes violently, leveling cylinders move out of sync.

Troubleshooting Process:
– Checked synchronization chains: chains have uneven tension or are broken.
– Checked guide rollers: guide rollers severely worn.
– Checked leveling cylinders: cylinder internal leakage.
– Checked mechanical linkage: linkage deformed.

Root Cause: The platform leveling synchronization chain is broken or improperly tensioned.

Required Parts: Platform synchronization chain assembly.