Fault Phenomenon: SANY railway crane when setting up outriggers, the four outriggers extend at different speeds, causing the body to tilt.

Troubleshooting Process:
– Checked flow divider valve: spool stuck.
– Checked cylinder internal leakage: one cylinder had severe internal leakage.
– Cleaned flow divider valve, replaced seals on leaking cylinder.

Root Cause: The hydraulic synchronization valve (flow divider) failed.

Required Parts: Flow divider valve assembly.