1984 555 with no steering

[rdwyer]

I finally got the 555 to start and will now turn my attention to its lack of steering. Previous owner put a new pump in and a new steering motor. Yet turning the wheel does nothing. No fluid loss at the cylinders. When the engine is off, turned the wheel and I can hear fluid squishing around in the motor. Any ideas on what to look for first?

 

[Harry in Ky]

I would start by questioning said "new steering motor". Steering pumps are replaced far more frequently than the steering valves.

You might consider the possibility of a totally blown steering cylinder piston seal. Mabey remove and cap the steering lines at the cylinder and see if dead engine steering produces some resistance in the circuit.