Workshop/Repair manual SC 500-2 Sumitomo Crane

Hello mate, I'm repairing Sumitomo Crane SC500-2, where the wire ropes for the Hoist can not function up and down, I've check all the limit sensors and the relief valves everything is still in normal conditions. I do not have a wiring and hydraulic diagrams, on this occasion I wish you would help by providing guidance / advice or manuals that I need. Thank you. regards.