Hey, new to this i have a 1989 cat el200b trackhoe, low power when i track or move anything, i know theres not much to go off of, thanks for the help have a blessed day!
You will need to start by checking hydraulic pressures and engine rpm. No one can help you with out those test results.
Those machines are not bad if the electronics are in good shape. I had one for years and found that a reset of the computer once a week or sometimes more often would do more good than anything. I do not remember how to do it exactly but you press and hold the two buttons on top of the computer on the left side and behind the seat. Press and hold one while pressing and releasing the other then holding both down for 3 seconds or something like that..