The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-29-2018, 09:45 AM   #1
ivorton74
Registered User
 
ivorton74's Avatar
 
Join Date: Nov 2011
Location: South Dakota
Posts: 916
Snapped my seat belt retractor bolts

Over the weekend I decided to install new carpet and tried to remove the seat belt retractor. The bolts snapped and now I’m wondering how to get em out and also where to get new bolts. What’s the size of these bolts?
__________________
1983 C10 Silverado 5.3 swap
1974 C10 lwb 5.3 swap(sold)...http://67-72chevytrucks.com/board/sh...d.php?t=614122
2001 BMW 530i 5 speed
2019 Nissan Titan SV Midnight
1979 Datsun 210 4 door
1980 Datsun 120y(back home in Trinidad)
ivorton74 is offline   Reply With Quote
Old 05-29-2018, 11:10 AM   #2
Palf70Step
State of Confusion!

 
Palf70Step's Avatar
 
Join Date: Jul 2002
Location: Gulfport, MS USA
Posts: 47,223
Re: Snapped my seat belt retractor bolts

I wouls say drill them out. They are grade 8 bolts, so they are tuff. If you have a big enough one, try and easy out. I did one of mine that way. Got it mostly drilled out, soaked it in PBlaster, the used the easy-out.

I have had to drill them out and basically replace it with a grade 8 bolt and nut since I have damaged the threads too much.
__________________
Bill
1970 Chevy Custom/10 LWB Fleetside
2010 Toyota Tacoma PreRunner SR5 Double Cab - DD

Member of Louisiana Classic Truck Club (LCTC)

Bill's Gallery
Life isn't tied with a bow, but it's still a gift.
Live simply. Love generously. Care deeply. Speak kindly. Leave the rest to God!

Last edited by Palf70Step; 05-29-2018 at 12:47 PM.
Palf70Step is offline   Reply With Quote
Old 05-29-2018, 12:00 PM   #3
Killer Bee
Registered User
 
Killer Bee's Avatar
 
Join Date: Jan 2016
Location: Barber City, CA
Posts: 4,809
Re: Snapped my seat belt retractor bolts

hammering the the bolt with a punch from either side may help loosen threads..

floorboard flex can be an issue so supporting the nut plate from the bottom with blocks or stand may help..

if the floor can be held firm, a good blow with round punch and heavy hammer should help break threads..

if enough of the bolt is protruding underneath, lock onto it with vise grips and back it out from there..

generally easier to run the better threads from the top down through the nut plate than running corroded threads back through the top..

if you can get on it, work the bolt back and forth, adding penetrant each time it moves..

continue working it slowly back and forth until it's out, patience is the key..

if you have to drill, try doing so from the bottom for same reason and grind the bolt tail flat across for a good center punch..

this also removes all or most of the exposed corroded threads which is helpful if it has to be removed from the top..

drill a small pilot as close to center as possible and increase hole size to an adequate extractor size..

if threads are locked solid and won't turn without risk of snapping extractor, continue drilling larger hole just under thread diameter..

sometimes the bolt threads can be punched into the hole releasing tension in the nut..

if you have to drill to final tap size for that thread pitch, run a tap through there and it should clean threads..

if you end up off center and enlarging the hole, longer bolt and jam nut underneath as mentioned above may be necessary..

here's a seat belt vendor that carries hardware for reference;
https://www.seatbeltplanet.com/seatb...kits/#Hardware

good luck!
__________________
I started out with nothing - and I still have most of it
Killer Bee is offline   Reply With Quote
Old 05-29-2018, 12:22 PM   #4
Mattchu60
Registered User
 
Join Date: Jan 2014
Location: Swaledale, IA
Posts: 485
Re: Snapped my seat belt retractor bolts

I broke one last year when replacing my carpet - had to drill it out as i could not get to it from underneath (gas tank and bed are in the way). Ended up wrecking the treads when i drilled it - so I had to tap it for new threads, put a grade 8 bolt in, and then also ran a nut on the bottom side (had the cab off a few months later) for extra holding power.
Mattchu60 is offline   Reply With Quote
Old 05-29-2018, 01:24 PM   #5
ivorton74
Registered User
 
ivorton74's Avatar
 
Join Date: Nov 2011
Location: South Dakota
Posts: 916
Re: Snapped my seat belt retractor bolts

Thanks for the info guys. I was searching and found out these trucks used M12 10.9 bolts. I went to the parts store n got some so later I’m going to try to get out the broken ones
__________________
1983 C10 Silverado 5.3 swap
1974 C10 lwb 5.3 swap(sold)...http://67-72chevytrucks.com/board/sh...d.php?t=614122
2001 BMW 530i 5 speed
2019 Nissan Titan SV Midnight
1979 Datsun 210 4 door
1980 Datsun 120y(back home in Trinidad)
ivorton74 is offline   Reply With Quote
Old 05-29-2018, 11:59 PM   #6
superdav
Registered User
 
Join Date: May 2016
Location: Arkansas
Posts: 200
Re: Snapped my seat belt retractor bolts



This stuff is awesome for stuck bolts
superdav is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:37 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com