Fault Phenomenon: Avant multi-loader when fitted with fork tines, the forks drop rapidly with the engine off.
Troubleshooting Process:
– Checked cylinder seals: seals failed.
– Checked multi-way valve: valve spool internal leakage.
– Checked hydraulic lock: no hydraulic lock.
– Checked load: overloaded.
Root Cause: Severe internal leakage from the multi-way valve spool.
Required Parts: Multi-way valve assembly or installation of a hydraulic lock.