In ground floor hoist removal

[CTN]

Hello,

I am removing an old in ground floor hoist tomorrow. Last weekend I took the arms off and pulled the carriage. 8 bolts to the top flange of the ram. The ram is 10" across and around 9'6" deep. Its all nice and shiny on the inside. There is a access pipe next to the main cylinder shaft with what appears to be a eyehook on the end of a long rod. Im assuming its part of a release mechanism . Can anyone help?

Thx
CN

 

[c39er]

Are you trying to pull just the piston/ram out?
The top bolted on seal/round ring plate needs to be removed..
Then the piston/ram as it's raised near the upper travel needs to be rotated one way and the other to clear internal safety stop blocks.
I think generally two of them.
Pulling the ram will require a tractor loader, chain fall, truck hoist etc.
Control valve neefs to be removed/open vented.

 

[CTN]

Have skidsteer, going to hammer the concrete around the collar. I am just trying figure out how the latch operates. It has a id plate but its worn off.

 

[bigdog12]

that looks like the post that stops the lift from spinning around and has the safety catch towards the bottom. There would be nothing holding it in the pipe but it's probably rusted and stuck.

 

[OldDoItAll]

Looks like the safety post to me too. The hole in the middle should be threaded for the bolt that attaches it to the head that holds the arms. The outer pipe is attached to the cylinder casing in a couple spots. Clear out the concrete, wrap a chain around it, and pull it out. It may have quite a bit of concrete around the top.
You could just remove the cylinder as described above and fill the casing with sand or gravel and top with concrete.

 

[Dodgeboy2020]

Double posted

 

[Dodgeboy2020]

I've actually removed an inground hoist about 15 years ago or so. IF you're trying to pull the entire assembly out of the ground you will probably need a mini excavator to dig around the hoist shaft once you get the concrete out of the way. If I recall correctly I ended up having to dig out almost to the bottom before I could get the skid steer to be able to pull the housing loose from the earth that was packed around it. I think I ended up with a chain wrapped around the housing and 'wiggling' it alot like a loose tooth to help loosen the ground around it. Be prepared that once you get it up it will want to tip one way or another so maybe have a couple of people around to help try to keep it somewhat under control. I was not thinking about this fact and wasn't able to keep it under control as well as I would have liked as I wasn't able to get out of the machine with the arms partially up. Fortunately in my case the housing assembly leaned against a block wall and didn't do any damage to it. One other thing that may or may not apply in your situation, make sure to document the condition of the ground after you pull it out to show there was (hopefully) no leaks or contamination of any kind. I also took pictures of the housing after I cleaned the bulk of the dirt off of it to show there were no compromised areas that were leaking. I'm not sure what the regulations may or may not be in your area but just something to think about as far as the old CYA goes.