From: MV (MV@dc9.tzo.com)
Date: Thu Aug 11 2005 - 21:25:45 PDT
I'm not sure what you mean by legal?
The data plate on my old '62 M51 says 30,000 lb towed load on the
highway, 15,000 lb towed load off road. I thought that was pretty much
standard for the 5 ton cargo and dump trucks.
If you hook a 40,000 lb pintle hitch trailer to a M813 type truck I
think you are still legal.
Realistically though I think that 30,000 lbs would be near the practical
limit due to lack of horsepower. I've had near 30,000 lbs in my M51
dump (200 hp gas) and it doesn't go very fast with that much weight.
Plan on using all 10 forward gears especially if you have any hills.
There is a good reason that they put 350 hp Diesels in newer triaxle
type dump trucks. They really need that kind of HP to get them rolling
in a reasonable timeframe.
Dave
J wrote:
> Trying to determine exactly what the legal (as opposed to functional)
> towing capacity is for the M813. I see numbers of 15,000 pounds and
> 30,000 pounds in the -10 manual. I do not see a listing that breaks it
> down for onroad and offroad. The 15k and 30k numbers are not found in
> the same spot. If they were, I'd surmise that it means off and on road.
> Similar sized trucks tow much bigger loads, so I suspect the 813 has a
> larger capacity than 30,000 pounds. Anyone know where to find the legal
> onroad towing capacity in print? Memphis Equipment does not know the
> answer, by the way. The 813 has a pintle hitch at the rear, not a 5th
> wheel. The tractor version of this truck is rated at 55,000 pounds
> towing capacity. Same frame and everything, except for the hitch
> method. Thanks. Jim
>
>
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