As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GREEN HYDRAULIC SYSTEM HIGH TEMPERATURE LIGHT ILLUMINATED EN ROUTE TO DSM. A/C DIVERTED TO MSP. MAINTENANCE FOUND LARGE HISTORY. PTU NOT CYCLING WHEN IN ON POSITION, REPLACED PTU P/N 4204001 IAW AMM 32-20-17. REPLACED LANDING GEAR SELECTOR VALVE FOR T/S IAW AMM 32-30-17 P/N HTE9490-4. OPS AND LEAK CHECK GOOD.