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Rear axle "tow" rating not GAWR

2668 Views 6 Replies 6 Participants Last post by  ykdave
Do Chrysler engineers use a formula or a value or rating for determining the shear or tensile stress on our rear axle or 5th wheel hitch? I know that there isn't a practical way of users to determine what it is but...Everything that is talked about with specs is just load or vertical load? If I have a 17000# toy hauler fully loaded and have a 1400# plus sandrail behind the 3 axles then my pin weight might be within the 6000# GAWR of the truck (6000#- rear axle truck dry scale weight) because of the location of the sandrail load but what about the pull or tow weight of the load/toy hauler? Or do you assume that my 6000#GAWR vertical load of the truck is the weak factor. In other words, can the internals of the rear axle or be over worked with a horizontal load before you hit the GAWR of 6000#. My father in law fried a bearing in his rear axle pulling a heavy toy hauler recently. Yes, he was over loaded and never had it on the scales but I am curious why horizontal load is never discussed or is it worked into the vertical load specs? Or am I just missing something??
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only 2 patings ive ever read references on. payload which is any load on or in the bed and cab of truck, usually about 3000 pounds.then the gross combined vehicle weight (GCVW) which is the total combined weight of every thing in the truck and being pulled by the truck,usually about 16000 pounds.most people routinely excede these, so stuff will break.
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