Re: Farmall 504 hydraulic problems

Posted by F-man on April 14, 2004 at 15:39:27 from (209.41.235.226):

In Reply to: Farmall 504 hydraulic problems posted by Tom on April 12, 2004 at 09:51:10:

Tom, does your hitch have the same problem or is it just isolated to your auxiliary valves? If so, you may have a shot pump or the relief valve is not shutting. You will find the relief valve under the plate that the seat mounts on. Take the plate off and the relief valve will be in the front, right corner of the housing. If the problem is just in the auxiliary valves, then you have worn spools in the valve-bank housing which is located to the right of the operator.

In order to do a pressure test, you will need to make a hose with a quick-coupler that plugs into your remote ports. That hose then needs to have a guage that will register at least 2000 psi and a shut off valve all plumbed in series. The other end of the hose needs to dump back into the reservoir. Run the tractor until it reaches operating temp. and work the lever that will send pressure to your test hose. Slowly close the valve just long enough to spot a pressure reading ont the guage and re-open the valve. You should get a reading of 1600 to 1700 psi.

Hydraulic systems need to operate in zero tolerances and almost sterile enviroments. It doesn't take much to plug something up. Good luck and let us know what you find.

Follow Ups:

• Re: Re: Farmall 504 hydraulic problems Tom 07:18:52 04/15/04 (0)

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