Superlift Extended Radius Arm Install Help - Ford Bronco Forum
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post #1 of 60 (permalink) Old 03-29-2019, 06:03 PM Thread Starter
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Superlift Extended Radius Arm Install Help

I need to summon the BKO wizards to help me with a slight (BIG) problem I have. I'm in the process of installing the Front TTB Superlift 6'' lift kit with extended radius arms. The axle halves are in the pivot brackets but I cannot get the radius arms into their brackets. The axle is bending too much inward and the radius arms are far from being centered into the radius arm brackets on the frame. I installed the brackets exactly 18'' inches rearward from each hole as the instructions provided. What's going on with my kit/ me? Can someone please post pics of the Superlift Extended arm setup on their truck? Thanks
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post #2 of 60 (permalink) Old 03-29-2019, 06:37 PM
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Are the radius arms torqued to the axle beams? If so, loosen them, get the arms where they need to be, then tighten them.

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post #3 of 60 (permalink) Old 03-29-2019, 07:50 PM
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had this issue a couple times. assuming the RA bolts are loosened and the inner edge of the RA is against the beam, easiest solution is to move the RA brackets further back till it fits, unfortunatly it will move the wheel further back in the wheelwell and not be centered so you dont want to go too far back.

another alternative is grind on the inside edge of the radius arm where it is against the axle beam preventing it from moving more inward, with enough grinding you should be able to get it in enough.

you can try to wallow the RA tabs bolt holes out more where there is enouygh slop for the RA to pivot inward more. in a really bad case, i cut the tabs off the RA and welded a 1/4" washer inplace giving it enough for me to get it in, but that was specifically so i can move the axle forward a few inches
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post #4 of 60 (permalink) Old 03-29-2019, 09:02 PM Thread Starter
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Are my radius arms installed in correct direction, Is the driver's side radius arm supposed to be how it looks in the pics??

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post #5 of 60 (permalink) Old 03-29-2019, 10:31 PM
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post #6 of 60 (permalink) Old 03-29-2019, 11:38 PM
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Unfortunately I have nothing to add but to say I'm so glad my truck came already lifted with them on there. If need be I can take some pictures for you tomorrow and let you see what they are supposed to look like all done up and see if that helps.

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post #7 of 60 (permalink) Old 03-30-2019, 07:22 AM
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I haven’t done this and haven’t read the directions but I thought about doing it and what’s involved quite a bit.

It would make more sense to me to put that end of the arm in first and then everything else since that joint has the most movement of the other mounting points.

Anyway, sry your having difficulty with it. Bummer. Gonna be great when your don’t though!


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post #8 of 60 (permalink) Old 03-30-2019, 08:14 AM Thread Starter
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Quote:
Originally Posted by Ford 4x4 View Post
Unfortunately I have nothing to add but to say I'm so glad my truck came already lifted with them on there. If need be I can take some pictures for you tomorrow and let you see what they are supposed to look like all done up and see if that helps.
Yes, a couple of pics if you could of the radius arm connected to the axle halves and how it enters the radius arm bracket. If you could post it on this thread would be better that way it might help future installers, thank you!


I'm going to try loosening the arms on the axle halves but even then I feel like they're still too separated from where the radius arm bracket is.

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post #9 of 60 (permalink) Old 03-30-2019, 09:07 AM
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These are procomp extended arms...






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post #10 of 60 (permalink) Old 03-30-2019, 10:45 AM Thread Starter
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These are procomp extended arms...





Do my arms resemble yours as far as the position it enters the bracket? Hard to tell from the pics

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post #11 of 60 (permalink) Old 03-30-2019, 10:58 AM
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Yeah I think so. They are pretty similarly bent. The bracket holes dont point perfectly forwards, they point out just a bit. The difference I see is in the axle end mounting bracket. I feel you need to pivot that portion inward. It's kinda hard to get good pics of this stuff lol

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post #12 of 60 (permalink) Old 03-30-2019, 12:05 PM
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this is what prevents him from moving the RA more inward. the edge is against the axle beam. as i said he can try to grind that edge so it fits



or he can move the RA brackets back on the frame till it fits. but then the axle might be too far back and not centered in the wheelwell. it could look like mine did when i tried that


or extend the tabs of the RA so it will alow it to pivot more
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post #13 of 60 (permalink) Old 03-30-2019, 12:16 PM Thread Starter
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I appreciate the help guys please keep it coming. My biggest concern is that I don’t want to modify the arms significantly. I just bought this kit a few months ago (new) and don’t feel it should be this difficult to install or require modification. If I continue having problems I’m probably going to have to contact the manufacturer again. Anyone with the Superlift arms please post pics of your setup to get a better idea.

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post #14 of 60 (permalink) Old 03-30-2019, 08:00 PM Thread Starter
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UPDATE: I was able to get both radius arms into their respective brackets. I loosened the top radius arm bolts that connect to the axle halves, jacked the arm and kicked it into the radius arm bracket, that gave enough play to work them into the brackets. For the driver side I had to completely remove the bottom radius arm to axle half bolt and now I'm having trouble getting it lined up to the hole to install it back in. I left the top bolt connected on the driver side arm but now need suggestions as to how to get the bottom bolt back into the axle half. What neat tricks do you guys recommend I try? I posted some pics so you guys can see what I mean.
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post #15 of 60 (permalink) Old 03-30-2019, 11:43 PM
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Loosen the top bolt more. I’m guessing the correct way to install those arms would be to put the radius arm bolts in loose first, put the rear radius arm bushing in as you lift the beam into the pivot. Just my guess if they don’t allow enough movement to go in any other way.
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post #16 of 60 (permalink) Old 03-31-2019, 09:59 AM
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Porta-power, come-a-long, or a ratchet strap would help.

As TJ said, I put the radius arms in first, then jacked the beams up into their pivots.

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post #17 of 60 (permalink) Old 03-31-2019, 06:42 PM
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I usually block up the chassis and let the suspension hang a little so i can move it around easier. I then install the upper and lower bolts loosely and then use ratchet straps to move the arms forward or back. I also use another to pull them inward (sideways).

Here are mine installed. I custom fabricated the rear brackets to suit my application.





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post #18 of 60 (permalink) Old 04-01-2019, 10:07 AM Thread Starter
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Yesterday I loosened the top bolt on the axle half and was able to get the bottom one installed fully but now the top one is slightly cross threaded when I tighten it. I think I'm going to have to enlarge the hole on the radius arm so it goes in straight and not at an angle. I basically traded the bottom bolt of the radius arm for the top one, which is fine by me, at least I can see the hole without placing my head under the axle half. I tried ratchet straps to bring the radius arm hole closer to the hole on the axle half but the radius arm bottoms out on the axle, I'd either have to take off the arm completely and grind down the edge where it contacts the axle or make the radius arm hole slightly bigger, I'm going with the latter.


What tool and what size do you guys recommend to open up that radius arm hole bigger and what's the safest way to do it while its on the axle half without damaging the threads on the axle half hole?

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post #19 of 60 (permalink) Old 04-01-2019, 11:27 AM
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A spot face cutter/ counter bore cutter. But I may be one of three people on here that own one.

Its essentially an end mill, with a hole on the cutting end. In that hole goes a mandrel to keep the cutter centered over the hole.



What size is the threaded hole and what size do you need for the radius arm hole?

You could run a bolt up from the bottom on the hole to protect the threads. Drill the hole bigger, and 95% of the threads will remain intact. The drill bit will just basically chamfer the threaded hole a bit.

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post #20 of 60 (permalink) Old 04-01-2019, 12:57 PM Thread Starter
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A spot face cutter/ counter bore cutter. But I may be one of three people on here that own one.

Its essentially an end mill, with a hole on the cutting end. In that hole goes a mandrel to keep the cutter centered over the hole.



What size is the threaded hole and what size do you need for the radius arm hole?

You could run a bolt up from the bottom on the hole to protect the threads. Drill the hole bigger, and 95% of the threads will remain intact. The drill bit will just basically chamfer the threaded hole a bit.
If I'm not mistaken I believe the hole is 3/8''. I'm also considering sandwiching an aluminum plate between the radius arm and the axle beam to prevent the drill or whatever I use to go into the hole's threads. That is a peculiar tool BigBlue, I guess I will try a dremel tool or a drill with a burr to open the hole, might take forever but I'll let you guys know.

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