Pump gear what if?

[cosworth34677]

Well I was a little ambitious yesterday and took the pump out of my dozer, and put it in my loader. They are the same brand and model. Little younger and its worn to but it's just lifting the blade dosent need the power. But it will lift the arms and curl the bucket and lift a tape measure, (granted not a bench make but heavy enough to test ) easy but same problem with dirt it wont lift it all the way up. So I'm thinking it's the pumps. Both do anyone have a good cheap pump , other them magom? I dont know how they are now with the steel gears but it's a pain to keep replacing the pump gears every 5 -6 months.