G'day jgates.
When you say that you overhauled the steering on the column I think you are saying that you removed the transmitter valve and fitted a repair kit ??.
The transmitter valve receives the mechanical "Instructions" from the steering column ,that is when the steering wheel is turned from left to right/right to left the steering shaft if properly adjusted will raise and lower about three sixteenth of an inch ,unless this has been adjusted dont touch.
raise the front of the tractor enough that the wheels are just clear of the ground ,start the engine and watch the small adjustable turnbuckle ,it will travel up and down as you turn the steering wheel, if say you want more power to the left SHORTEN the turn buckle by loosening the lock nuts a little bit and adjust a little bit at a time till you
Balance it out that is with the wheels now on the ground and tyres inflated to say thirty psi the power steering will operate with the same effort in both directions.
To check the power steering pump pressure ,install a TEE Piece and a Pressure gauge (2000 psi will do) anywhere in the pump Discharge line coming from the pump to the transmitter valve,with the engine running at say 1400 rpm the and the steering wheel held hard left or right lock there should be around 1500 and sixteen hundred PSI I say around because the power steering will operate ok at example 1100 PSI.
If the Pump is good again with the engine running at say 1000 RPM turn the wheel left or right lock and the engine will labour a little bit that is it will slow down and you will hear the Relief valve hiss , if necessary the relief valve can be adjusted a little by either screwing it in a bit ,and at the same time watching the test gauge installed ,DO NOT adjust to much or you may damage things so a little bit a a time is good
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That should get you going , If you decide you need a new pump it is important to raise the front of the tractor and fill the new pump with oil BEFORE starting the engine A.T.F Dexron 2 is good ,"O" rings and seals will last a lot longer, start the engine on IDLE ,turn the wheel full lock both ways watching the oil level as you go and finally ,don't overfill ,fill only to the BOTTOM of the threads on the filler hole otherwise you will get oil leaks , .
Happy Days.
Hutch.