Caterpillar 12G, 120G, 130G, 140G Motor Graders Factory Service & Shop Manual Price listed in US Dollar: $55.00 Complete workshop repair & service manual with electrical wiring diagrams for Caterpillar 12G, 120G, 130G, 140G Motor Graders. Read more about Caterpillar 12G, 120G, 130G, 140G Motor Graders Factory Service & Shop Manual