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  #1  
Old 06-22-2016, 06:35 AM
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Seat bolt problem and help needed

Need some help on a problem we caused: Unfortunately we have a galled front inner seat bolt that has broken away the hidden corresponding nut. Looks like we will have to use a cut off wheel to get the head of the bolt off and then figure what to do so the loose nut doesn't rattle around in the closed channel under the seat and come up with replacement fastening.

So the seat is in place, the bolt is 90% tightened. The "nut" hidden inside the square tube or channel below the seat has broken free so the bolt cannot be tightened or loosened. We do not have good access for a normal cut off wheel. Looks like a diamond dremel wheel would work to cut the bolt head off if we work at it slowly. We can then get the seat off again. That will leave the nut end to rattle around in the tube or channel and no way to secure the front inner side of the seat.

To remove the nut maybe we can drill a large access hole in the top of square channel and lift the nut and bolt section out. We do not have access to welding equipment to secure a new nut. What do you all think about a "Blind Insert Rivet Nut Rivnut"? We could probable rent the needed tool.

Comments, experience and other suggestions?
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  #2  
Old 06-22-2016, 11:45 AM
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Re: Seat bolt problem and help needed

If h can see the bolt down I the hole. Mix up epoxy and pour it on top
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  #3  
Old 06-23-2016, 06:36 AM
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Re: Seat bolt problem and help needed

Quote:
Originally Posted by Conn SVX View Post
If h can see the bolt down I the hole. Mix up epoxy and pour it on top
Here's a crazy idea: drill a small hole right next to the bolt head, the intention being to hit the hidden nut below. Tap the hole, run a screw into it. This doesn't have to be big, just big enough to hold the inner nut in place while you:
  • Carefully cut the head off the seat bolt
  • Drill out or otherwise extract the remaining bolt shaft
After that you could cut a slot wide enough to extract the old hidden nut. The idea of a slot would be to leave material behind for a rivnut to grab onto. Maybe slide a washer in there if it's possible while clamping the rivnut into place.
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  #4  
Old 06-23-2016, 08:45 AM
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Re: Seat bolt problem and help needed

Explain a rivnut. I work in Hardware and I don't no what that is exactly.
I was able to cut mine off using a dermel and the black thin steel cut off wheel. I thought I would need many wheels but one cut through no problem without any noticeable wear. I just wedged a screwdriver under the head to hold it still. Yea the nut fell in and I did what I suggested to you. Right now no bolt in that bracket. Seat is very secure with 4 bolts . Will try later to cure the problem, maybe When I hook the heated seat control up .
Ok just d it. I see largest is 1/4 - 20. The old bolt is more like a 12mm . Or 3/8"-18
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Last edited by Conn SVX; 06-23-2016 at 08:53 AM.
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  #5  
Old 06-23-2016, 09:10 AM
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Re: Seat bolt problem and help needed

This is what Gwynethh is referring to. Thers are a couple of ways they install, both with specialized tools and ordinary hand tools.





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R.I.P. 2010 Subaru Outback Limited 2.5 CVT...338,000 miles. Totaled by a 1,300 lb. COW March 4, 2016

2014 Hyundai Avante Limited ...178,000 miles. Actually quieter and smoother than the Outback

2007 Mazda Miata MX-5 PRHT...102,000 miles.
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Last edited by svxcess; 06-23-2016 at 09:30 AM.
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  #6  
Old 06-23-2016, 07:34 PM
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Re: Seat bolt problem and help needed

Ok here lies the problem. We need a rivnut bigger than 10mm. How big can we get. . Looks like 5/16 or 11 mm where do u get yours
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  #7  
Old 06-23-2016, 08:16 PM
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Re: Seat bolt problem and help needed

.

Assortment

https://www.amazon.com/100pcs-Steel-...ut+inserts+m10


12mm

https://www.amazon.com/uxcell%C2%AE-...ut+inserts+m10


1/4"

https://www.amazon.com/uxcell-20Pcs-...serts+1%2F4%22


5/8"

https://www.amazon.com/20Pcs-Steel-R...serts+5%2F8%22

.
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1996 Polo Green LSi #216..138,100 miles...SOLD

JFICX8659TH100216.....Date of Manufacture: November 16, 1995.....
Fuji Heavy Industries..Ōta North Plant....Ōta City,. Gunma Prefecture, Japan

In-Service Date: January 2, 1997



"The Pristine Green Polo Machine”
First Polo Green on the Network
First Clear front turn signals, JDM Alcyone hood emblem, rear panel, and BOXER engine cover on the Network (US) (2000)
First 5000K HID factory fog lights (2007)
First SVX JDM BBS wheels on a USDM SVX (2013)

HID lighting (5000K) for headlight and H3 fog lights, PIAA SuperExtreme 120W high beams, rebuilt EG33 longblock, Cometic head gaskets, Phase II flexplate, AMR aluminum radiator with custom silicone hoses, 160A high-output alternator in aluminum-ceramic coated case, new design alternator wiring upgrade v.4, rare factory headlight protectors, refinished JDM BBS mesh aluminum wheels and custom, polished billet aluminum new hex center caps, LED grille mod, R1 Concepts high-carbon cryo slotted rotors, Akebono ceramic pads, Goodridge S/S braided brake lines, Smallcar Stage 1 shift kit, ThermalTech aluminum/ceramic-coated valve covers, Energy Suspension urethane front & rear swaybar bushings, Bontrager22 rear swaybar with QS Components Chromoly Teflon/Kevlar endlinks, "$15.00/5 minute" suspension mod. Hella Supertone horns, Custom stainless steel exhaust system with 2" headpipes, Magnaflow cats, AeroTurbine AR25 resonator /AWD "Bullet" muffler.


R.I.P. 2010 Subaru Outback Limited 2.5 CVT...338,000 miles. Totaled by a 1,300 lb. COW March 4, 2016

2014 Hyundai Avante Limited ...178,000 miles. Actually quieter and smoother than the Outback

2007 Mazda Miata MX-5 PRHT...102,000 miles.
Plenty of parts, service and windshields.


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Last edited by svxcess; 06-23-2016 at 10:41 PM.
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  #8  
Old 06-24-2016, 09:29 AM
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Re: Seat bolt problem and help needed

I ordered 10mm aluminium ones. OD about .400 . Fig I can instal easier using the screw and nut method. The tool is like $100
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  #9  
Old 06-24-2016, 10:56 AM
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Re: Seat bolt problem and help needed

.

You can make a rivnut tool using very inexpensive pieces of hardware you may already have.







.
__________________
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Subaru Ambassador

1996 Polo Green LSi #216..138,100 miles...SOLD

JFICX8659TH100216.....Date of Manufacture: November 16, 1995.....
Fuji Heavy Industries..Ōta North Plant....Ōta City,. Gunma Prefecture, Japan

In-Service Date: January 2, 1997



"The Pristine Green Polo Machine”
First Polo Green on the Network
First Clear front turn signals, JDM Alcyone hood emblem, rear panel, and BOXER engine cover on the Network (US) (2000)
First 5000K HID factory fog lights (2007)
First SVX JDM BBS wheels on a USDM SVX (2013)

HID lighting (5000K) for headlight and H3 fog lights, PIAA SuperExtreme 120W high beams, rebuilt EG33 longblock, Cometic head gaskets, Phase II flexplate, AMR aluminum radiator with custom silicone hoses, 160A high-output alternator in aluminum-ceramic coated case, new design alternator wiring upgrade v.4, rare factory headlight protectors, refinished JDM BBS mesh aluminum wheels and custom, polished billet aluminum new hex center caps, LED grille mod, R1 Concepts high-carbon cryo slotted rotors, Akebono ceramic pads, Goodridge S/S braided brake lines, Smallcar Stage 1 shift kit, ThermalTech aluminum/ceramic-coated valve covers, Energy Suspension urethane front & rear swaybar bushings, Bontrager22 rear swaybar with QS Components Chromoly Teflon/Kevlar endlinks, "$15.00/5 minute" suspension mod. Hella Supertone horns, Custom stainless steel exhaust system with 2" headpipes, Magnaflow cats, AeroTurbine AR25 resonator /AWD "Bullet" muffler.


R.I.P. 2010 Subaru Outback Limited 2.5 CVT...338,000 miles. Totaled by a 1,300 lb. COW March 4, 2016

2014 Hyundai Avante Limited ...178,000 miles. Actually quieter and smoother than the Outback

2007 Mazda Miata MX-5 PRHT...102,000 miles.
Plenty of parts, service and windshields.


4th Registered Network member —2/21/2001

My NEW locker..I...My Email..I..Wikipedia/SVX .

.

Last edited by svxcess; 06-24-2016 at 11:02 AM.
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  #10  
Old 06-24-2016, 11:21 AM
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gwynethh gwynethh is offline
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Re: Seat bolt problem and help needed

Great ideas. Thanx so much.
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  #11  
Old 06-24-2016, 01:34 PM
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Re: Seat bolt problem and help needed

Gwyne , Did you want one or a few when I get them ?
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  #12  
Old 06-24-2016, 03:27 PM
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Re: Seat bolt problem and help needed

Two would be plenty. One for trial and one to install. Thanx.
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  #13  
Old 06-24-2016, 03:37 PM
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Re: Seat bolt problem and help needed

This tool looks good for the tight location next to the seat. https://www.youtube.com/watch?v=tA9fB3asSZU
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  #14  
Old 07-12-2016, 04:07 PM
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Re: Seat bolt problem and help needed

Found a local source of steel M10 rivnuts so picked up 2 and the fasteners needed to install it. Photos show installation and the spare rivnut. Easy installation. Looks to be square with the metal it goes into.
Attached Images
File Type: jpg rivnut2.jpg (679.6 KB, 183 views)
File Type: jpg rivnut1.jpg (568.9 KB, 182 views)
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  #15  
Old 07-13-2016, 12:33 AM
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Re: Seat bolt problem and help needed

.

Glad it all worked out. Isn't technology grand?

On a similar note, one of the best tools ever designed was the Dremel. I have a heavy-duty one with A 36" flexible shaft which gets everywhere. Makes cutting and polishing effortless.



.
__________________
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Subaru Ambassador

1996 Polo Green LSi #216..138,100 miles...SOLD

JFICX8659TH100216.....Date of Manufacture: November 16, 1995.....
Fuji Heavy Industries..Ōta North Plant....Ōta City,. Gunma Prefecture, Japan

In-Service Date: January 2, 1997



"The Pristine Green Polo Machine”
First Polo Green on the Network
First Clear front turn signals, JDM Alcyone hood emblem, rear panel, and BOXER engine cover on the Network (US) (2000)
First 5000K HID factory fog lights (2007)
First SVX JDM BBS wheels on a USDM SVX (2013)

HID lighting (5000K) for headlight and H3 fog lights, PIAA SuperExtreme 120W high beams, rebuilt EG33 longblock, Cometic head gaskets, Phase II flexplate, AMR aluminum radiator with custom silicone hoses, 160A high-output alternator in aluminum-ceramic coated case, new design alternator wiring upgrade v.4, rare factory headlight protectors, refinished JDM BBS mesh aluminum wheels and custom, polished billet aluminum new hex center caps, LED grille mod, R1 Concepts high-carbon cryo slotted rotors, Akebono ceramic pads, Goodridge S/S braided brake lines, Smallcar Stage 1 shift kit, ThermalTech aluminum/ceramic-coated valve covers, Energy Suspension urethane front & rear swaybar bushings, Bontrager22 rear swaybar with QS Components Chromoly Teflon/Kevlar endlinks, "$15.00/5 minute" suspension mod. Hella Supertone horns, Custom stainless steel exhaust system with 2" headpipes, Magnaflow cats, AeroTurbine AR25 resonator /AWD "Bullet" muffler.


R.I.P. 2010 Subaru Outback Limited 2.5 CVT...338,000 miles. Totaled by a 1,300 lb. COW March 4, 2016

2014 Hyundai Avante Limited ...178,000 miles. Actually quieter and smoother than the Outback

2007 Mazda Miata MX-5 PRHT...102,000 miles.
Plenty of parts, service and windshields.


4th Registered Network member —2/21/2001

My NEW locker..I...My Email..I..Wikipedia/SVX .

.
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