Fault Phenomenon: Teupen LT20 spider lift after the outriggers are extended, they automatically and slowly retract.

Troubleshooting Process:
– Checked hydraulic lock: lock failed.
– Checked cylinder seals: piston seals failed.
– Checked lines: line leakage.
– Checked pressure: pressure normal.

Root Cause: The outrigger cylinder piston seals are worn, causing internal leakage.

Required Parts: Outrigger cylinder seal repair kit.