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Your right one dealer had the tech talk to me because he wasn’t sure what was wrong exactly, and I explained everything to him and he informed me they dont have hydraulic pressure gauges…..

Ok well thanks for your help after $3000 between 2 dealers you helped more than they did for less that $100 in parts

I should replace part #10

It was tight and i have replaced everything in the relief valve except for the housing

Already have

I insalled 5 .2 mm shims and brought it up to 2000 at idle and 2600 at full throttle

Ok, shouldn’t it be 2633 at idle? Kubota gave me this.

#100 in this diagram

Remove plug for relief valve and install shims under spring

First picture is at idle and second is at full throttle

I need to hook in to line 170?

I have a hydraulic pressure gauge and have checked at the the loader valve. Unplugged a hose. Installed pressure gauge, and started tractor and operating that function, then also did the same thing at the remote valve.

The loader wasnt lifting like it used to, and other attachments weren’t working properly. I have verified from Kubota that pressure should be at least 2500 psi at idle. Replaced pump, per Kubota, no change, changed main relief spring, popet, and spring seat, still no change. Only 1500 psi and...

Hydraulic pressure gauge, and have checked at loader valve and remote valve.

So i have a L4630 and the hydraulic pressure is only 1500 psi, it should be 2500-3000 ish psi. The dealer said the pump was weak so i replaced the pump and no change. They then said it seem fine to them. Any advice on what it can be?