Fault Phenomenon: Teupen Leo 20GT spider lift operating the outrigger deployment, one outrigger does not move, instrument alarms.

Troubleshooting Process:
– Checked outrigger hydraulic lock: lock not opened.
– Checked outrigger cylinder: cylinder internal leakage.
– Checked interlock switch: switch signal error.
– Checked solenoid valve: solenoid valve coil burnt.

Root Cause: The outrigger control solenoid valve coil is burnt, causing the oil circuit to be blocked.

Required Parts: Outrigger control solenoid valve coil.