old komatsu pc220-3

Bought at auction not running. After getting it home we got it running. It runs perfect, only problem is one track and bucket wont move and boom wont pressure down but will go up. other hydro functions work great. Bucket moved slightly while pulling one track lever. Pilot controls. don't think solenoid works or is getting power at pump toward driver side of machine. Looked at service manual but this system is way over my head. we pulled a couple spools of the circuits and they were smooth,...

old komatsu pc220-3

old komatsu pc220-3