Fault Phenomenon: Genie Z-60/37 FE hybrid aerial work platform diesel engine runs normally, but the battery does not charge, battery charge level drops quickly.

Troubleshooting Process:
– Checked generator belt: belt broken.
– Checked generator excitation: excitation circuit open.
– Checked rectifier bridge: rectifier diode damaged.
– Checked voltage regulator: regulator failed.

Root Cause: The generator voltage regulator failed, causing no excitation current and inability to generate power.

Required Parts: Generator voltage regulator or generator assembly.