Fault Phenomenon: Kalmar reach stacker spreader twistlocks cannot lock onto a container, instrument shows twistlock not engaged.

Troubleshooting Process:
– Checked hydraulic motor: motor not turning.
– Checked twistlock mechanism: mechanism mechanically seized.
– Checked sensors: sensor false reading.
– Checked wiring: wiring open circuit.

Root Cause: The spreader twistlock mechanical mechanism is seized or the hydraulic motor is faulty.

Required Parts: Spreader twistlock repair kit or hydraulic motor.