Fault Phenomenon: Genie aerial work platform after completing work, the hydraulic outriggers cannot be retracted, vehicle cannot move.

Troubleshooting Process:
– Checked hydraulic pressure: pressure normal.
– Checked outrigger cylinder: cylinder internal leakage.
– Checked control valve: valve spool stuck.
– Checked mechanical lock pin: lock pin not released.

Root Cause: The outrigger control valve spool is stuck in the extend position.

Required Parts: Outrigger control valve assembly.