TM 5-3805-261-20PRINCIPLES OF OPERATION.1-26.FRAME, TOWING ATTACHMENTS, DRAWBARS AND ARTICULATION SYSTEM.c.ArticulationSystem(Figure 1-37). The front frame section and the frame and case (rear frame section) arejoined (hinged) at their hitch bushings. Two hydraulic cylinders and lines provide power for articulation. They arecontrolled from the cab. One cylinder is mounted at each side of the front frame and extends to attach to the rear frame toprovide articulation control.d.ArticulationIndicator(Figure 1-38). Mounted inside the cab at the top of the steering console. A smallhoused cable mounted on the front frame attached to a lever fastened to the rear frame. When the frame is articulated thecable moves the pointer on the indicator to show the amount of articulation. Refer to paragraph 1-31 for operation.Figure 1-37Figure 1-38e.TowPinsandBrackets(Figure 1-39). There is one tow pin and bracket at the front of the 130G Grader andone at the rear. The rear tow pin is held in its bracket by cross pin and cotter pin at the bottom of the tow pin. The fronttow pin is held in the bracket by a latch assembly at the top of the bracket. The front bracket is bolted to the frame. Therear bracket is welded to the bumper assembly.Figure 1-39.1-39
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