like the title says I have a Komatsu wa270 pulled it in the shop everything worked. Had to put a rear drive shaft in and some seals nothing for the boom or bucket but when I started it to pull it out I can’t lift the boom nor do I have bucket controls. Does have a code for the boom position sensor but I really don’t want to just start throwing parts at. Does anyone have a breakdown for the boom circuit up to the boom position sensor. I’m the mechanic for a construction company so I have very little information at my disposal. Thanks in advance
Don't put yourself in that position with no info. Make the company buy you the service manual if they want you to work on it. Couple 100 dollars for a manual is nothing compared to the money that machine makes when it is working.