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  #1  
Old 01-26-2020, 08:55 PM
Rusty76 Rusty76 is offline
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Leaf Spring anchor point install ?

Hello Team FSJ:
I'm about to jump in and install my 3 inch spring lift kit.
First I need to cut out old front anchor points and weld in new ones.
Just to save some time and lower the high potential for mistake I figured might be a good idea to run my plan passed a few folks. So this is for the front leaf springs. MY plan is to attach the new leaf at the front shackle and bolt in the U bolts to the plate. With the new spring leaf anchor point attached I will jack up axle until the new anchor reaches the frame. At this point it should be in the right position and I can either tack it in with some weld, remove spring from anchor and finish the weld or just finish the weld with the spring attached.
I hope this is making some sense? I sent a pictures of the old one. Thanks for the help!

IMG_0558 by , on Flickr
IMG_0560 (1) by , on FlickrIMG_0559 (1) by , on Flickr
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  #2  
Old 01-27-2020, 04:24 AM
wiley-moeracing wiley-moeracing is offline
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Ugg! cut that out of there! Good that you have new hangers., Assuming that the originals are in the correct position,just mark the frame location and weld in the new ones.
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  #3  
Old 01-27-2020, 08:30 AM
Rusty76 Rusty76 is offline
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Ok thanks. I guess I'm making this to be more of a big deal then it needs to be.
I can narrow it down pretty close to where the PO cut them out.

These are the good ones! You should have seen the rear.
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  #4  
Old 01-27-2020, 08:42 AM
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bkilby bkilby is offline
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That hanger looks too far back. It shouldn't be under the body mount. It should be in front. Do you see a hole where the rivet would have gone through the side?
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Old 01-27-2020, 09:28 AM
SJTD SJTD is offline
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Seems like a good time to move the shackles to the back.

But if not, where they are exactly isn't as important as them being the same on both sides. Would bug the heck outta me if the shackles were at different angles.
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  #6  
Old 01-27-2020, 10:07 AM
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babywag babywag is offline
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Quote:
Originally Posted by bkilby
That hanger looks too far back. It shouldn't be under the body mount. It should be in front. Do you see a hole where the rivet would have gone through the side?

Looks ~stock location for '76-up ?

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  #7  
Old 01-27-2020, 08:39 PM
Rusty76 Rusty76 is offline
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Ok thanks. I'm at work right now so can confirm but looking at my picture of current set up and comparing it to babywags pic it looks to me like I can see the rivet still attached on my rig. This will help. Thanks for the help and pictures.
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  #8  
Old 01-27-2020, 10:44 PM
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Kaiserjeeps Kaiserjeeps is offline
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Double check your spring hanger to make sure you have the correct end forward. You probably do, but check it so your axle ends up in the correct spot.
It looked off to me but I am probably confusing it with a rear hanging shackle set up. I think you are keeping the shackle up front so it is most likely my mistake.
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  #9  
Old 01-28-2020, 04:44 PM
Rusty76 Rusty76 is offline
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Hmmm just noticed my front passenger side is missing the axle spring perch
Im guessing not normal
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  #10  
Old 01-29-2020, 04:00 AM
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bkilby bkilby is offline
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Quote:
Originally Posted by babywag
Looks ~stock location for '76-up ?







Wow. Ok, never mind then. Lol. My '74 is farther forward than that. I didn't realize they moved them in different years.
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  #11  
Old 01-29-2020, 04:04 AM
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bkilby bkilby is offline
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Quote:
Originally Posted by SJTD
Seems like a good time to move the shackles to the back.

But if not, where they are exactly isn't as important as them being the same on both sides. Would bug the heck outta me if the shackles were at different angles.




If they aren't the same on both sides, you're going to have an axle that is crooked. That being the anchor end is what dictates where your axle is located.
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  #12  
Old 01-30-2020, 10:18 PM
SJTD SJTD is offline
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That would bug me too.

I hadn't thought of that. It's an even better reason to get them right.
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  #13  
Old 01-31-2020, 11:09 AM
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rang-a-stang rang-a-stang is offline
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If you look at this picture you can see the original rivet is still there. It looks like the previous hack...er I mean owner, took a cut off wheel, cut the mount eyelet open, and pried if off the rivet. You can see the cut off wheel mark on both the rivet head and the spring mount (I marked them in red on your picture. If you look at the spring perch, you can see the rivet is directly above the spring bolt.

So, iffen it were me, I would take a square and weld the perch on directly so your new spring eylet is below that rivet, tilted to the angle of the chassis (see my yellow lines).


Quote:
Originally Posted by Rusty76
[/url]IMG_0559 (1) by , on Flickr
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  #14  
Old 01-31-2020, 02:40 PM
wiley-moeracing wiley-moeracing is offline
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Sorry, that's wrong, you need to use a weighted string and drop straight down from original spring mount hole and locate the new spring mount hole in that location, then measure to the front spring mount on both sides so they are the same and then across to each side to make sure there are square.
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  #15  
Old 01-31-2020, 03:14 PM
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rang-a-stang rang-a-stang is offline
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No need to say sorry! You know a whole lot better than I do!!! Probably why my rig sucks so bad!!
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  #16  
Old 01-31-2020, 04:46 PM
Rusty76 Rusty76 is offline
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Thanks everybody for the help. It nearly took me all day monkeying around
mocking things up this way or that way. I was nervous about welding that bracket in the wrong spot. Got frustrated and walked the dog. Was able to come up with a different plan. Got back into the garage and it seemed to work.
Funny how it took me sooooo long to figure it out. Anyway I attached the spring to the new front shackle then used the "indicator' knob of the new leaf, lined that up with the female knob taker (wait what am I describing here)
on the bottom of the axle. Stuck my jack under both and raised it up into position with the new bracket already mounted. I think I'm pretty darn close.
The picture is a little dark but you can see the old revit and the spring eye are
at a nice angle like the original.

Welding was tricky. My Miller 135 will not Mig weld 1/4 steel. So I needed to switch to fluxcore. The problem I realized right away was that the bracket is 1/4 steel and the frame is only 16g steel. Had to sit on the bracket and whip the puddle up onto the frame. Its not pretty but its solid and I will probably try to brace is some more. With weight the front shackle angle seems good.
Onto the drivers side. Thanks again
IMG_0579 by , on Flickr
IMG_0580 by Colin McArthur, on Flickr

Last edited by Rusty76 : 01-31-2020 at 05:15 PM.
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  #17  
Old 01-31-2020, 04:55 PM
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rws31 rws31 is offline
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I'm gonna say you pretty screwed already cause of that serious hack job someone already accomplished.

IF you haven't already cut the mounts off, here's what I would do.

Put everything back together and set it on the ground. IF you like where the axle is centered in the wheel well, place a plumb bob on each side of the frame and let it be centered on the axle tube. Leave it be.

Take everything off and cut all that crap out.

Put new hangers on the springs and install springs on the axle and get the axle tube lined up under the plumb bob or slightly behind the plumb bob cause when you put weight on the springs the axle will slightly move forward.

Tack weld the rear holders onto the frame and then put the jeep weight back onto the springs and see where the axle center is compared to the plumb bob. Adjust accordingly.

It's a guessing game at this point cause all your factory locations are mute cause you don't have factory spring brackets.

As far as squaring it, good luck. Nothing on these vehicles are square to begin with. I would measure from the rear spring hanger to the front on each side and get it close. Remember, a slightly out of square front axle won't make you go crooked down the road but a crooked rear axle will.

Good luck. You have lots of ciphering to do.
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  #18  
Old 01-31-2020, 04:58 PM
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rws31 rws31 is offline
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I typed all that only to post after you fixed it.
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  #19  
Old 01-31-2020, 05:03 PM
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rws31 rws31 is offline
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But I do agree with Rang on the location of the Spring center eye. Looks to be perpendicular from the frame to the old mount rivet. Picture might be deceiving, but you might be slightly off.
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  #20  
Old 01-31-2020, 05:21 PM
Rusty76 Rusty76 is offline
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haha sorry..Thanks for the input. I do see what you are saying in regard to the eye.
The picture is taken a little to the front. Its really close. We will see how the drivers side works out.
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