Problem with maxjax installation

[elou795]

Hello all, I recently purchased a maxjax lift, I have radiant in floor heat in my slab. Had a friend of mine come down today with his flir camera to locate the pex piping so I could drill the holes in the slab. The first post is ok all 5 holes miss the piping but the second post I could only get the four outer holes clear, the back middle on is on a pipe.

No matter how we moved the post around there was always one hole over a pipe, the heaviest vehicle I will lift is my quad cab silverado which weighs about 5200 lbs then I have a couple of tdi jettas and a 69 firebird which all come in around the 3200 lbs range. So I'm thinking one post will have all 5 bolts and the other will have only 4 bolts in it.

Has anybody ever had the problem where they could not get all the anchors in? If so what did you do? Looking for a little advise here.

Thanks

 

[G-force]

How thick is you slab?

 

[Crow11]

I have a 12k bend-pac, 7 bolts per post I would not sacrifice one bolt. My base plate is 3/4" If I was in your situation I would consider adding (welding) a two inch wide x 3/4 thick x (length of the base) to the most suitable edge as determined by you.

if I didn't feel confident to trust my life to the weld I would hire a certified welder. Re: take the non-control post to the welders shop.

 

[elou795]

Slab is 5 1/2" thick, I'm thinking of replacing those grade 5 bolts with grade 8 bolts and maybe adding another set of shields for a total of six holes, three in a row one one side and three on the other, I would then get a piece of steel bar 1/2" thick by 2" wide and 16" long. I would lay it on top of the 2 original holes and change the bolts to longer ones the secure it behind the post with the third hole. Kind of like an outrigger.

 

[nehog]

Slab is 5 1/2" thick, I'm thinking of replacing those grade 5 bolts with grade 8 bolts ...

Most people say "Grade 8 is stronger than Grade 5" however that is not strictly true. You can have a higher clamping force with a higher grade bolt but they can also be easier to break with things go bad.

 

[elou795]

After looking at it again I think I will drill another hole in the base 2" beside the original hole so that I can get the 5th bolt in there, it won't be directly behind the hydraulic quick connect like original but I think it is better than leaving it out.

 

[Jvvmusme]

Call Dannmar

 

[Jvvmusme]

After looking at it again I think I will drill another hole in the base 2" beside the original hole so that I can get the 5th bolt in there, it won't be directly behind the hydraulic quick connect like original but I think it is better than leaving it out.

Good idea

 

[elou795]

Call Dannmar

Yeah that's going to be the plan but was kinda hoping to get it installed this weekend