Fault Phenomenon: Tadano truck crane after long-distance driving, the transmission oil temperature warning light illuminates.

Troubleshooting Process:
– Checked oil level: level too high.
– Checked cooler: transmission oil cooler clogged with insect debris.
– Adjusted oil level, cleaned cooler.

Root Cause: The transmission oil cooler was clogged, causing poor heat dissipation.

Required Parts: Cleaner.