580C hoe valve bank refurb

Started cleaning up the spool valves and secondary relief valves today. We had pulled the entire bank off the machine and I disassembled it today and started cleanup. Fortunately, all the spools look to be in great shape. There is a little corrosion on each spool above where the seal sets, just below the control rod hookup. I'll probably just hit that area lightly with 600 grit to clean them up. the secondary relief valves however, are a different story. They are a mess. Evidently some...

580C hoe valve bank refurb

580C hoe valve bank refurb