Fix Baler Piston Seal Leak

The piston on my baler has begun leaking oil at the seals, and nothing has been done to address it yet. I need a technician who can quickly diagnose the exact seal failure, source any compatible replacement... (Budget: $750 - $1500 AUD, Jobs: CAD/CAM, Chemical Engineering, Engineering, Mechanical Engineering, Technical Documentation, Technical Support, Troubleshooting)