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In Reply to: 4600su power steering problem posted by Paul Egelston on Friday, April 06, 2018:
Howdy Paul, welcome to the SSB tractor forum.
Regarding the speedi sleeve installation, some guys put epoxy between the sleeve and shaft to fill in irregularities (pitting/groove/etc.) to prevent leakage from underneath the sleeve. You will have to allow epoxy to cure for 24 hrs.
I will attempt to upload a New Holland parts diagram, but have had problems in the past with this....compatibility problems I presume. If this fails to upload, go to the "Official New Holland Online Parts Store" on the internet. Enter 4600SU as your model and search. Go into the front axle & steering section and click on the pump diagram.
See item #26....reservoir vent valve assy. Could be a plugged reservoir vent causing pressure problems?
See item #24....filter plugged?
See item #15......relief valve (650 psi).
To check your pump pressure, "tee" into your pump pressure line and install a 1000 psi gauge. Turn the steering wheel up against a lock (full left or right turn) to energize your relief valve. Your pressure should read between 600 psi and 700 psi. You will need a manual to learn how the adjust your relief valve pressure setting, if it is off significantly.
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