Someone gave me this old trailer made from the front axel of a truck, There is a 1 cu yd dump box on it. There is an old frozen up hydraulic pump but no cylinder. If I can figure out a cylinder I will use the tractor remote to tip it. There is a linkage, pivoted at the back that has what may be cam surfaces and a hole at the top. Attached are a couple of photos with the linkage in the up and down position. The blocks of wood in there are just to hold the linkage up for the photo and a safety in case the come along holding the dump box up fails when I am under it.
Anyone have any idea what the dump mechanism is from? I would love to find an old drawing or photo to give me some idea of what parts I should make.
I think a cylinder with shaft and 4 cam rollers on the end would work. Not so sure about the top of the linkage, perhaps just a long shaft with 2 more rollers. Not obvious from this angle but the linkage is quite a bit narrower than the rails on the bottom of the box. Not sure why they would do that.
There is also the possibility of fitting a more conventional cylinder or winch at the front.
![KIMG2302.JPG KIMG2302.JPG](https://www.hobby-machinist.com/data/attachments/448/448178-a7b1191c0d82692457382ed95a518890.jpg)
![KIMG2303 (1).JPG KIMG2303 (1).JPG](https://www.hobby-machinist.com/data/attachments/448/448179-09c51b4c09607f7bc1bdb361a284e10e.jpg)
Anyone have any idea what the dump mechanism is from? I would love to find an old drawing or photo to give me some idea of what parts I should make.
I think a cylinder with shaft and 4 cam rollers on the end would work. Not so sure about the top of the linkage, perhaps just a long shaft with 2 more rollers. Not obvious from this angle but the linkage is quite a bit narrower than the rails on the bottom of the box. Not sure why they would do that.
There is also the possibility of fitting a more conventional cylinder or winch at the front.
![KIMG2302.JPG KIMG2302.JPG](https://www.hobby-machinist.com/data/attachments/448/448178-a7b1191c0d82692457382ed95a518890.jpg)
![KIMG2303 (1).JPG KIMG2303 (1).JPG](https://www.hobby-machinist.com/data/attachments/448/448179-09c51b4c09607f7bc1bdb361a284e10e.jpg)