Here’s some pics of an a-frame that we replaced the yoke in. The a-frame is the rear axle diff housing support for a Caterpillar 793C haul truck. The bore is where the hitch pin goes & the bore & bolt holes around the bore normally come in with several cracks. The center piece where the bore is between the two legs, or supports, is called the yoke. We cut the old yoke out & weld a new one in place to bring these a-frames back into spec for another round of service.
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