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#1 |
Senior Member
![]() Join Date: Mar 2016
Location: Athens, AL
Posts: 358
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Advice on loosening seat back-to-bottom screws
71-72 seat. Two Phillips head screws on each side attaching seat bottom to seat back. Any advice on how to get these to break loose? I'm on my third seat, and have drilled out the past two after ruining the Phillips head. Let them soak with WD40 and banged with hammer to break stuff free...no luck. Thanks.
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#2 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,286
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Re: Advice on loosening seat back-to-bottom screws
Maybe a little heat from a propane torch.
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#3 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,647
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Re: Advice on loosening seat back-to-bottom screws
Try an impact driver. Whack it with a hammer and it tries to turn the screw at the same time the force of the hammer hits it. Also, put the WD40 on the shelf and use penetrating fluid instead.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#4 |
Senior Member
![]() Join Date: Mar 2016
Location: Athens, AL
Posts: 358
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Re: Advice on loosening seat back-to-bottom screws
Thanks. That metal is so soft, it's easy to mess the head up.
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#5 |
Senior Member
![]() Join Date: May 2012
Location: Scottsdale, AZ
Posts: 1,906
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Re: Advice on loosening seat back-to-bottom screws
I would give the impact driver a shot. If you have one. Kind of a lost art I guess.
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#6 |
Registered User
Join Date: Aug 2012
Location: St. Croix River Valley, WI
Posts: 795
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Re: Advice on loosening seat back-to-bottom screws
I just pulled two of these apart today. They must use some sort of liquid thread-locker on the threads of those. They were impossible to move. The minute I heated them with a torch, they came right out, but you could feel the thread-locker start to thicken up again as they cooled down, so more heat again.
Bottom line, don't drill them out, just use a torch on the nut from the backside.
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Meet "Old Roy": http://67-72chevytrucks.com/vboard/s...d.php?t=707801 |
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#7 |
Senior Member
![]() Join Date: Mar 2016
Location: Athens, AL
Posts: 358
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Re: Advice on loosening seat back-to-bottom screws
Thanks. One of my issues is finding a Phillips head that fits it just right. I've tried probably 10 different ones and none get a good bite on it. They're just begging me to strip the head out. One set I actually drilled a hole through the threads so I could get a hardened rod through them (like the letter T) and still couldn't get them to budge until cherry red hot. They're a bear.
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#8 |
Account Suspended
![]() Join Date: Jul 2016
Location: Tacoma, WA
Posts: 6,873
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Re: Advice on loosening seat back-to-bottom screws
I use a 3/8 air impact and they come right out. You have to have the right bit though. Going out now to find the size for you.
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#9 |
Account Suspended
![]() Join Date: Jul 2016
Location: Tacoma, WA
Posts: 6,873
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Re: Advice on loosening seat back-to-bottom screws
Ok, I just checked and its a Phillips number 4 that fits it. I have used the hand impact but that just breaks it loose. Use air or an electric driver impact, I have been using my dewalt 20v 1/4" bit impact, you know the kind people use for decks and stuff, just get a 1/4 or 3/8 adapter for it and find the correct Phillips 4 driver socket.
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#10 |
Senior Member
![]() Join Date: Mar 2016
Location: Athens, AL
Posts: 358
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Re: Advice on loosening seat back-to-bottom screws
Thanks. Here's the sizes I have...too big, big, medium, too small...ha.
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#11 |
Senior Member
![]() Join Date: Mar 2016
Location: Athens, AL
Posts: 358
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Re: Advice on loosening seat back-to-bottom screws
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#12 |
Registered User
![]() Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Advice on loosening seat back-to-bottom screws
Here is my solution to rusty stuff:
PB Blaster Penetrating Lubricant, I use a mini torch after letting the PB soak for a while. Repeat this process, PB, Heat, Cool, PB, Whack with the impact driver. Most of your manual impact drivers come with a couple of good bits. Repeat process until its loose. It has yet to fail me. If necessary I break out the slightly bigger torch that a plumber uses with the green coleman can of propane. Use cold running water to impart a shock to the metal, this part can be important on the real stubborn stuff. I had an old farm implement to repair once and after being frustrated many times the boss said to use the acetylene torch to heat it instead with a 3/4 inch large air impact driver on a rather large bolt. On my 4th try after getting it glowing red then spraying it with the hose multiple times then using the PB it came loose. That process is almost guaranteed to break any rusted nut and bolt loose. |
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