Subaru Pinch Bolt - Tips in Advance?

I had a look at the pinch bolt I replaced with a new one. It has a flat surface at the tip. I suppose a person could start drilling from the tip end if need be.

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To the OP: I have seen others use a nut and bolt to replace the OE pinch bolt, especially if the threads get wrecked during the drill out. You can even get stainless steel with enough lead time.
I have read that also.

At this point it's going to head to the shop. I tried to swap struts this weekend, since those also needed to be done. But it turns out my spring compressor wasn't able to get me enough squeeze to free the spring from the strut assembly. So I had to put the old ones back on, but my alignment is not correct. Sigh.

As much as I would love to tackle all of this myself, my driveway coupled with the rainy weather and family/work stuff is going to make this more trouble than I can bother with.

I'll take it to my local guy and ask him to bail me out of my woes and see if he can just blast the pinch bolts outta there. And if he snaps it, it's a lot easier to drill when you can have it on a lift or easily pull the whole knuckle.

Will post back if he tells me how it went. Thank you for all of the info here everyone, I do hope it helps someone in the future.
 
I have read that also.

At this point it's going to head to the shop. I tried to swap struts this weekend, since those also needed to be done. But it turns out my spring compressor wasn't able to get me enough squeeze to free the spring from the strut assembly. So I had to put the old ones back on, but my alignment is not correct. Sigh.

As much as I would love to tackle all of this myself, my driveway coupled with the rainy weather and family/work stuff is going to make this more trouble than I can bother with.

I'll take it to my local guy and ask him to bail me out of my woes and see if he can just blast the pinch bolts outta there. And if he snaps it, it's a lot easier to drill when you can have it on a lift or easily pull the whole knuckle.

Will post back if he tells me how it went. Thank you for all of the info here everyone, I do hope it helps someone in the future.
Sounds reasonable. Let us know what he did and if he used an impact wrench, which model. Thanks.
 
To finish off some of the discussion, to do a job where plan B might have to be enacted if the bolt snaps, I’ve assembled a few things.

In the middle is a M12 1.75 Pinch bolt for a 2005 For Taurus like the one I snapped 5 years ago. On the far right is a 3/8 inch cobalt bit that could be used to try drill out the M12 pinch bolt. It’s part of my set of Cobalt bits. Next to it is a left hand 3/8 inch Cobalt bit to try get the bolt to back out as it drills.

Over to the far left is a 1/2” Cobalt bit that could be used to totally take out the threads and all if the 3/8” bit could not stay in the middle, aborting the idea of saving the threads. Once the threads were completely drilled out, the item next to it is a M10 1.5 stainless steel bolt that could be inserted through the 1/2 inch hole and tightened up. It’s longer than necessary but is all I could find. The extra length does not interfere with anything.

Ford does not sell the pinch bolts anymore, and Rock Auto does not have them. I still need to get some M12 1.75 bolts in case I successfully drilled out the original pinch bolt like my mechanic did five years ago. Hope that concludes some of the great ideas that were presented here. Snag.

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The Mayhew Bolt Breaker tool works well if you have a pneumatic air hammer gun. Cheaper knock-off versions sell for ~$10 on Amazon. You apply lateral counter-clockwise torque with a closed end wrench while the impact vibrations shock the bolt/nut loose.


This thing is a lifesaver. Especially if you have a stout hammer like I do. (Aircat 2520).

But vibration can work even if not applied directly. Find a safe place to bash that's near the the stuck item. Grab the heaviest ball peen you can find and pound the every loving snot out of it.


I'll never forget wrestling with the ball joints on my 2002 Ram 2500 at the on-base hobby shop. After a half hour, I was exhausted. I went to the main desk and asked to check out a different BJ puller. Old timer behind the counter said "Ball joint stuck"?


He reached into the large tool box behind him, pulled out a small sledge/drilling hammer and followed me over to my truck on the lift.

He proceeded to pound near the ball joint until it fell (under gravity) off the truck and onto the floor. I was stunned.



Since they I almost never bother with heat or any special rusty bolt tricks. There's no substitute for the effectiveness of high-amplitude vibration.
 
This thing is a lifesaver. Especially if you have a stout hammer like I do. (Aircat 2520).

But vibration can work even if not applied directly. Find a safe place to bash that's near the the stuck item. Grab the heaviest ball peen you can find and pound the every loving snot out of it.


I'll never forget wrestling with the ball joints on my 2002 Ram 2500 at the on-base hobby shop. After a half hour, I was exhausted. I went to the main desk and asked to check out a different BJ puller. Old timer behind the counter said "Ball joint stuck"?


He reached into the large tool box behind him, pulled out a small sledge/drilling hammer and followed me over to my truck on the lift.

He proceeded to pound near the ball joint until it fell (under gravity) off the truck and onto the floor. I was stunned.



Since they I almost never bother with heat or any special rusty bolt tricks. There's no substitute for the effectiveness of high-amplitude vibration.
Got it the Amazon wish list. Thanks for the reminder. :D
 
Hello everyone.

Need to swap the lower control arms on my 2014 Forester. I purchased new ones from Subaru, and they come with new ball joints. I have about 105k on the vehicle now, so was thinking I'll just swap them. I bought the Astro Pneumatic ball joint puller, since I know that part can be a bear.

But there are also lots of horror stories about the pinch bolts snapping in the knuckle, and it's honestly been keeping me up at night thinking about it. I have sprayed them with some ATF/Acetone already, and have other various penetrants ready when I get in there. I am planning to try and use an induction heater to heat the area some, but not sure how well that will "fit". (You have to get the area inside the coil for the heater to work).

Any tips on getting those bolts out? Hand tools only? Smaller impact and just rattle it back and forth? Really want to avoid a broken bolt, or worse having to swap the whole knuckle out.
a little heat followed by water
 
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So I do have an update!

Went out and decided I wouldn't try to do the whole project, just was gonna work on that one bolt on each side. If it came out, great, I would lube it up and put it back in for next weekend. First thing, and probably should have done this before, used a pick and got all of the gunk out of the slot that was in the pinch bolt (the one that @JHZR2 shows gets packed with grease). Did that and used some Kroil that I had and doused things pretty well. Used the induction heater which I was able to sorta smush a coil around one side of the pinch and then the other. Got it hot enough that the oil was smoking off of it, but might not have been hot enough to really break it loose. Rattled it with a small impact driver (more for fasteners, not bolts), then stepped up to a little bit of back and forth with a Milwaukee stubby impact, and also a 3/8" breaker bar handle so I could work back and forth without having to have it ratchet.

Nothing.

Tried more heat, saw Kroil bubbling out of the threaded end, tried to turn it again, nothing. Tried to use my imitation Shake and Break, and got a lot of loose flaky rust off the bottom of the vehicle, but no movement at all. (see my other thread for that fiasco).

Repeated on the other side to get the stuff out and oil it up, but didn't rattle it the same way.

Maybe next weekend with having some time to soak some I can get more heat on it and see if it will come out. Right now my backup plan is that the ball joint boots don't seem bad, and Im not aware of them being too lose, so I may just do the LCAs and leave the old ball joints and kick that can down the road. Need to really figure out how much heating I should do with the induction heater before I crank on it I guess...
Have you ever tried Freeze off? I worked for a guy building race cars and this stuff will wick its way into threads and spaces.
 
Picking the Subie up from the shop today. Will try to talk to my mechanic about what he did and will see if I should have just bought more tools instead of paying him 😄

(I am seriously considering trying to find a used Branick strut compressor to stick in the barn for the next time I need to do struts...)
 
Picking the Subie up from the shop today. Will try to talk to my mechanic about what he did and will see if I should have just bought more tools instead of paying him 😄

(I am seriously considering trying to find a used Branick strut compressor to stick in the barn for the next time I need to do struts...)
Confirmed that I should have found myself a good spring compressor instead of paying the shop. Im going to start the hunt for next time....

Apparently the pinch bolts came out without too much fuss. Im going to credit that to me having soaked and heated them a few weeks prior, but he probably just got after it with an impact where I wussed out. Front end of the Forester feels much better now, need to really take it on a ride to see how it does but for the short ride home today feels a lot more planted.

Thanks for all the input and advice here everyone. Ill have to get some more cobalt bits (have the set, need a place to find singles) and maybe some freeze off ahead of the next replacement. Which is hopefully several years and thousands of miles away.
 
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