M925 dump conversion

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Argyle MI
Also for fun i set a protractor on it. Its about a 57 degree angle at full dump. Maybe a tad excessive but with that big hoist it has no trouble dumping a full load of sand. No scales for weight we have our own sand pit.

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Jbulach

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Have you adjusted the pressure up on your valve yet, or still at 2000psi?


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157
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Argyle MI
Local auto parts. But theyre buyers brand r38dr is the number for them if i remeber correctly. They come in different lengths

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1stDeuce

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Nice work!!
I must have missed it... You have a two spool valve to run one double acting cylinder? Are the spools one direction only, so one knob is raise, and the other lower?
 
157
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Argyle MI
Its a 3 spool valve. One for the hoist, one for a rear remote for my dump trailers, and one for my snow plow i need to mount yet. Only put 2 cables on for now but its all set up to just run the cable.

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157
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16
Location
Argyle MI
Hauled some sand to the in-laws yesterday. Finally had a chance to get it on the scales. 14.5 tons on that load. Had to crank the relief on the valve again. After that it dumped like a champ. Actually made the springs squat some. Pretty sure I'm right at the dot limit on weight


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Jbulach

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Do you have a pressure gauge installed, do you know what you have it cranked up to? Need to bump mine up a little more yet....
 

tobyS

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Hauled some sand to the in-laws yesterday. Finally had a chance to get it on the scales. 14.5 tons on that load. Had to crank the relief on the valve again. After that it dumped like a champ. Actually made the springs squat some. Pretty sure I'm right at the dot limit on weight


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I bet you see that a bed that large could be overloaded. I can put the 929 to the limit and you have nearly 4' on me.
 

74M35A2

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Hauled some sand to the in-laws yesterday. Finally had a chance to get it on the scales. 14.5 tons on that load. Had to crank the relief on the valve again. After that it dumped like a champ. Actually made the springs squat some. Pretty sure I'm right at the dot limit on weight


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I’d like to dump a load of something on my in-laws front lawn...
 
157
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Argyle MI
Yeah let's not even get started on that... not sure why I agreed to do it. Especially since me & the wife are well I dunno.

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Speedzilla

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East Florida
Have you found the factory bed to be strong enough? I am about to start a very similar project with a 939 truck and was wondering if the factory bed frame rails would need to be boxed or sleeved. I don't imagine I would ever see more than 15T in the bed. Thanks!
 
157
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Location
Argyle MI
Have you found the factory bed to be strong enough? I am about to start a very similar project with a 939 truck and was wondering if the factory bed frame rails would need to be boxed or sleeved. I don't imagine I would ever see more than 15T in the bed. Thanks!
I boxed the bed rails right from the start. Haven't noticed any flex yet

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74M35A2

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Nice job on this, bro. You got it done, I just have piles of parts, stacks of dreams, and 3hrs of algebra homework with my daughter per night. Last week of that, thank goodness.
 

tobyS

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Have you found the factory bed to be strong enough? I am about to start a very similar project with a 939 truck and was wondering if the factory bed frame rails would need to be boxed or sleeved. I don't imagine I would ever see more than 15T in the bed. Thanks!
Here is the L that I'm using to reinforce the deuce frame. It's 11" x3"x10' X1/4". Some version of it could be used in the high stress area from the hinge to the cylinder push point on the bed. Cost for steel and forming $200.
 

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157
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16
Location
Argyle MI
Finally found the loaded weight. Fyi its had more than that on it. Only once did it fail to dump. But it was way overloaded with crushed limestone.


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