M105 Dump Trailer

Hello All,

Does anyone have any information on converting a m105 trailer to a dunp trailer. I really do not know where to begin .

Any advice would be greatly appreciated

Tom

I have looked at this some, most important is you will need to build a sub-frame for the box.

i would just buy one of the pickup dump boxes and slide it in the trailer... SVR

That would be cool for a 2 1/2ton trailer too (or any trailer for that matter)

Most light duty dump kits like Hefty Products or Pierce Wrecker are available for $600-$1,500 depending on rated capacity, but are limited to a 45° dump angle. Northern sells the same kits.

I can tell you from personal experience that when you order one, you will be playing phone tag with the manufacturer and Northern because they ship all of the items (300-400lbs.) loose in a cardboard box on a pallet. The box was in tatters. Almost all of the hinge and pivot pins were lost and needed to be shipped again (at no cost) from the manufacturer. I just finished a dump conversion of a 75' C-30 used Marina truck (30,000 orig. mile 350/SM465) using said kit and it works well but took one or two tries to get the mounting position right. If mounted in other than the "right" spot, dump angle is reduced. The instructions were pretty vague but overall it wasn't bad. The motor and pump is a Monarch brand and is not a "power down."

To all the Dumpers out there... what are your opinions on whether or not power down is necessary in a dump.

I dont see any reason for a power-down, provided the plumbing and valving is right. I have seen some pretty slow floats... of course they are usually slow to go up too.

If you are on a slope and the dump is vertical you may need it or the military dumps that go up almost vertical, or if the hinge is a couple feet forward of the tail and there is material laying on it, but otherwise yo really dont need it.

M105 dump trailer

I know this is an old thread but I didn't want to start another and add to the search issues.

I started making my M105 dump. I've made a subframe from 2x2x1/4 square tubing and made a hinge.
My plan is to make it hydraulically dump from the same pump that runs my snow plow on my 818. Kind of a wet line off the truck.
The trailer is in ok shape, a little beat up but I want to haul firewood with it and don't need a show piece.
By using 2- 3" cylinders, it should easily lift 4k lbs.

https://flint.knapheide.com/products.aspx?navtype=cat&cat=14&mfg=25This is the design. This bed is heavier than it looks. So far everything is a bolt on so if I needed to I can change it back to stock or put the hoist on a new trailer.

I am working on a turning mine into a dump trailer

atswilson said:

I am working on a turning mine into a dump trailer

Click to expand...

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That's a neat idea!!

You obviously don't mind putting some steel in it.....looks heavy duty.

I don't like my dump trailer because it only goes to about 45* and it puts the back too close to the ground. Looks like height may not be an issue for you.

You may want to make a box that keeps the materials from being wedged in front of the wheel well. Also, look at the wings of a 929 gate......they are really handy.

tobyS said:

You obviously don't mind putting some steel in it.....looks heavy duty.

I don't like my dump trailer because it only goes to about 45* and it puts the back too close to the ground. Looks like height may not be an issue for you.

You may want to make a box that keeps the materials from being wedged in front of the wheel well. Also, look at the wings of a 929 gate......they are really handy.

Click to expand...

At full tilt I will have close to 60 deg angle. I will have plenty of ground clearance. I have not really thought about the area in front of the wheel wells. I am still a couple of weeks away of having it complete.
I am trying to find a 929 gate. What exactly is a 929 gate?
Thank you

It's not the gate, it's the part that folds around and holds the gate , providing a steel surface to keep limbs, or anything from catching the chain. Google m929 and look at the fold around piece.

tobyS said:

It's not the gate, it's the part that folds around and holds the gate , providing a steel surface to keep limbs, or anything from catching the chain. Google m929 and look at the fold around piece.

Click to expand...

They would help. Pretty neat idea.

With your hinge so far forward the gate may drag the ground if in the straight position. Of course you can shorten the chains for making an angle, but stuff can get caught.

Finally got to work on the underside of the bed this weekend. Here is what I have so far.

I have bolted the bed to the trailer frame. I still need to hook up the hydraulics.
TobyS you are correct. At full tilt the tailgate will drag the ground. I do not think this will be problem.