Show also usage in model: 3B-504 TRACTOR 504 TRACTOR Select parts group: 20 Engine 30 Fuel and Air 40 Electrical Components 41 Wiring Harness 42 Lights 43 Power Train Controls 50 Power Train 56 Front Axles 60 Steering and Brakes 70 Hydraulics 71 Selective Control Valve 80 Wheels and Sheet Metal 90 Open Operator’s Station 94 Decals