Komatsu GD555-5 Operation & Maintenance Manual page 174

OPERATION OPERATION
2. When articulation control lever (2) is pushed forward (A), the
machine articulates to the left; when it is pulled back (C), the
machine articulates to the right.
3. When not operating the articulation, set the front frame and
rear frame straight, align the pin holes, and fix the front and rear
frames in the original position with pin (1).
OPERATION OPERATION
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