Fluid Leak Inspection
Check the gearbox assembly for oil leaks carefully. Oil can leak out of various points, depending on location of the faulty oil seals/seal rings. Check the following before removing the gearbox from the frame.
Steering Gearbox
Power Steering Speed Sensor
Lines
Pump
Reservoir
Pump Outlet Line (High-Pressure)
Pump Inlet Line (Low-Pressure)