Harry, here's my problem. I've got a 1710 with a 770B loader. The loader seems a little weak, It won't raise the front wheels off the ground unless you place it flat on the ground, then use the bucket dump to raise it (kinda cheating). Not sure if this is normal. I recently added a GB 651 backhoe that came with a self contained pump rated at 2250 psi. I removed the pump and reservoir and plumbed it directly into the tractor 3PH hydraulics. The hoe seems to be around 10% weaker, when running off the tractor hydraulics. Now, the tractor hydraulics are specd at 2133 psi. The loader is specd at 1600. I agree, I do need to check the system pressure before adjusting anything, but I didn't want to buy a pressure gauge if adjustment wasn't possible anyway. I have the loader manual and it shows an inline pressure relief valve, but I cannot find it on my setup. I wasn't sure if someone simply lowered the whole system pressure to accomplish this. JC, wonderful schematic on that post. Bill, I didn't realize there was another relief valve for the 3pt. I see that in JC's schematic. So, now that I know it is adjustable, I will pick up a gauge tomorrow. If it is below spec, I assume it will be cause the pump is worn. Is it normal to simply shim up the relief valve, or will the pump need repair?