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I recently purchased an early 1020--1966 I think. It's equipped with power steering, but it doesn't work-it steers, but it's obviously not power assisted. There doesn't appear to be any leaks. I'm wondering if there is any relatively simple test to determine where the problem is--the steering valve, the ps pump, a clogged filter? It's an early 1020 with the open center type of ps. All lines appear to be connected and there's fluid in the system and the hydraulic system works. A person on another forum suggested the hydraulic oil filter relief valve is stuck open. I took the hyd filter off but I can't remove the relief valve to check it. The hyd filter looked fine--no shavings & no obvious dirt. There was also no intake screen in place. Thanks for any help you can give me.
 

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Hydraulic relief valve removal

Does anyone know how to remove the hydraulic relief valve--located above the hydraulic filter--on a 1020? It's firmly in place and no place to apparently get a grip on it & move it. Thanks.
 

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My 1020 was the opposite, could steer her with 1 finger. Maybe this will assist you, here's the service manual page for the power steering system, and hydraulic system. I have the rest of the sections too if you're interested.
 
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If you remove the hydraulic filter and look up in the housing where it comes out, you can see the filter relief valve. usually can pry on it with a screwdriver from there to help remove it. Have also used flat external snap ring pliers to grab it from the plug hole to help twist and pull it out.
 
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