4430 hydraulics

jp1977

New User
I have a 4430 with a quad range transmission the other day the 3 point hitch would not raise at all. For some time it will chatter going up also the lines going to an implement feel hot how would you check to see if you have an internal leak in the hydraulic system on one of these
 
From a cold start, feel (or better yet use a temp gun) each hydraulic component... the hitch valve, each SCV, and the steering valve. One that heats soonest is likely leaking internally. Will probably be noisy, as well.
 

How long since hyd filter was changed & sump screen checked/cleaned? Has stand-by pressure been checked lately? Stand-by should be 2252 psi. Is large star nut that holds linkage on 3 pt control valve housing tight?
 
The filter was changed this April.I haven't
cleaned a screen since I have had it last
5-6 years is it a plug near the other
filter?I can check the pressure tonight.
And see if anything gets hot faster.
 
I read that the screen is on the left
side just in front of and below the axle
hosing but I don't see a plug to remove
would it be behind the fitting that has
a rubber hose just in front of axle?
 

The photo below is for a 4020 but 4430 trans screen location is same location.

38408.jpg
 

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