I am rebuilding my piston pump and wonder about the valve seats. I see where some have been able to remove the seats by grinding a long screw head to make a puller. How about installing the new seats, can you just drive them in with a punch to fit? Any tricks to help?
Also is it really necessary to remove and replace the seats in the first place? My pump was sucking air and loosing prime. It also has lost the ability to lift the brush hog but the lift arms work ok when the hog is removed. Is this because of air in the lines or some internal leakage? I guess I will find out after I get the pump fixed! But the fact that the lift arms raise unloaded tells me the linkage to the control valve is working ok.....right?
Also is it really necessary to remove and replace the seats in the first place? My pump was sucking air and loosing prime. It also has lost the ability to lift the brush hog but the lift arms work ok when the hog is removed. Is this because of air in the lines or some internal leakage? I guess I will find out after I get the pump fixed! But the fact that the lift arms raise unloaded tells me the linkage to the control valve is working ok.....right?
