Features: Need a side boom tractor pipelayer? Our 561D is perfect as a powerful tractor for your project. The side boom tractor has continuous power to pipelayer winches, independent of torque converter. The winch transmission has a sliding gear, built by Caterpillar, 3 speeds for raising, 1 for lowering. The drums are operated independently or simultaneously. This side boom tractor is a solid piece of machinery for your next project. Call us today to see how we can help.