Link belt LS 3400 excavator control valve issues

Good day team, so I was called to work on this link belt LS 3400, initially it didn't have tracking power. It wouldn't steer if one track was operated, but moves fine with both . So a technician came and worked on the pump,problem didn't go away,so went onto the control valve to inspect spool conditions and ended up mixing up the spools,not just the tracking spools.
Now my first task is to arrange spools serially but I haven't got a hydraulic schematic.
Can anyone help me with that?
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Link belt LS 3400 excavator control valve issues