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Removing Broken Nylon Bolt/Screw
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DRR Sportsman
Picture of FootbrakeJim
posted
Need some advice on this one.
(As I curse the freaking bean-counter who decided using a plastic screw for a fuel filter air bleed on a $60K truck was a good idea). Mad
I am super cautious about over-tightening ANY fasteners, especially plastic crap. This thing doesn't clamp or hold anything together, and it obviously does not require much torque when tightening. I always use only finger pressure. But it sits a few inches from the exhaust manifold on a turbo-diesel, so my guess is at 114K miles, it has just fatigued. (A-Hole Engineer, Grrr).
ANYWAY, Big Grin The head of this POS fastener popped off, and the threaded shank is in the mounting head for my fuel filter. I am thinking the drill and EZ-Out extractor may not be a good idea to use here, because any chips of plastic that fall through, will likely foul an injector. And if same cheap-azz engineer who made the call on materials also designed this bleeder screw, it could be hollow, meaning nothing there to drill into but a thin layer. I tried using an awl to rotate the shank, but it is broken off just below flush, and could not get a decent bite. So what are your thoughts? Any and all ideas and advice are welcome. Thinking maybe heat the tip of a small flat-blade screw driver with a torch, and melt it into the plastic, let it cool, and try to unscrew it? Or??
As always, Thanks in advance for your help, it is appreciated! Wink

This message has been edited. Last edited by: FootbrakeJim,


Dan "Jim" Moore
Much too young to feel this damn old!!
 
Posts: 1059 | Location: Farmersville, TX  | Registered: December 05, 2002Reply With QuoteReport This Post
DRR Pro
Picture of chasracer
posted Hide Post
Have the same kind of problem with pool filter plugs, a few years in the sun and the head snaps off. I would go with your idea of the screwdriver first. If that doesn't get it, then you might try just putting a self-taping screw in it and see if it bites. Then you can back it out. Since this is an air bleed it must be at the top and I would think you could pull the filter and vacuum out any plastic pieces.
 
Posts: 1135 | Location: The problem is not the problem. The problem is your attitude about the problem. Savvy?” ~~ Captain Jack Sparrow ~~ | Registered: August 21, 2000Reply With QuoteReport This Post
DRR Trophy
posted Hide Post
You might get lucky with a left hand drill bit going slow. I've backed out more than 1 broken bolt this way.
 
Posts: 26 | Location: TEXAS...waiting to secede! | Registered: December 25, 2011Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
If you can spray it with some Aerokroil too.

Best to let it sit and let it creep in. Best stuff I ever used. I use to use it in my vibration test laboratory where we had a lot of dissimilar metals. Lot of magnesium with tool steel inserts. It should be safe for plastic. I always have a can in the garage since I discovered using it.


BG
 
Posts: 760 | Location: Florence, SC | Registered: August 25, 2019Reply With QuoteReport This Post
DRR Sportsman
Picture of FootbrakeJim
posted Hide Post
Chasracer & Len281, thank you for your ideas. Man, now if I could just combine them, and find a left-handed, self-tapping screw, I think that would be the perfect solution! Big Grin
Been trying to hunt down a replacement, and none of the usual parts stores have anything. A bit of research tells me this is a rather common problem, as there are many aftermarket pieces - Aluminum, billet, stainless, etc. Napa does show the replacement nylon screw, and some nice brass ones, (that come 5 to a box). Roll Eyes (Thinking the plastic ones should be in the 5-pack, and metal ones sold individually). Smile
Anyone else with ideas, please share your thoughts, thanks. Wink


Dan "Jim" Moore
Much too young to feel this damn old!!
 
Posts: 1059 | Location: Farmersville, TX  | Registered: December 05, 2002Reply With QuoteReport This Post
DRR Sportsman
Picture of FootbrakeJim
posted Hide Post
BG7X77, thanks, where do you buy Aerokroil?
No luck on it at O'Reilly or Napa...


Dan "Jim" Moore
Much too young to feel this damn old!!
 
Posts: 1059 | Location: Farmersville, TX  | Registered: December 05, 2002Reply With QuoteReport This Post
DRR Pro
Picture of CURTIS REED
posted Hide Post
Can you not use an easy out? Shouldn't take much to get it out by hand.



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2017 and 2018 Osage Casinos Tulsa Raceway Park No-Box Champion

2018 Div4 Goodguys Hammer award winner
 
Posts: 3027 | Location: KIEFER, OK. | Registered: August 17, 2007Reply With QuoteReport This Post



DRR Sportsman
posted Hide Post
Direct or Amazon. Made by KANO labs.

https://www.amazon.com/dp/B005..._c.72FbX3GFS5M?psc=1

Try copy and pasting that.

I'm sure there are some other distributors. I ordered at amazon. They have some other products on their site. Worth a look.


BG
 
Posts: 760 | Location: Florence, SC | Registered: August 25, 2019Reply With QuoteReport This Post
DRR S/Pro
posted Hide Post
quote:
...where do you buy Aerokroil?

Not comparing products, but if you can't find Aerokroil you might try PB Blaster. It should be readily available.


Illegitimi non carborundum
 
Posts: 2350 | Location: OKC, OK | Registered: February 15, 2008Reply With QuoteReport This Post
DRR Trophy
Picture of Thurston
posted Hide Post
If this is a DuraMax diesel Merchant Automotive has a aluminum replacement bleeder screws.

https://www.merchant-automotiv...r-Head-Bleeder-Screw
 
Posts: 71 | Location: West Michigan | Registered: February 13, 2009Reply With QuoteReport This Post
DRR Sportsman
Picture of FootbrakeJim
posted Hide Post
Guys, thank all of you for your input.
I kept working at it with a sharp little 90* pick, managed to dig a small channel in the part and and got it to turn on out. My son stopped by Napa for me, he said they were all out of the brass ones, so he bought 2 of the plastic replacement pieces. I will install one of those until I get a metal one.
In case anyone is ever in a pinch with a similar issue, I was playing around with the broken one and sized it - the thread size is M10x1.5, I suspect a plain short socket-head screw with an O-Ring would work just fine. I will have a spare nylon screw or 2 here, if any of you wants one, it is yours for the asking. Wink


Dan "Jim" Moore
Much too young to feel this damn old!!
 
Posts: 1059 | Location: Farmersville, TX  | Registered: December 05, 2002Reply With QuoteReport This Post
DRR Sportsman
posted Hide Post
Glad it worked out. Outstanding.

Oh and PB Blaster is great stuff too I just found the Aerokroil years ago and it is awesome. They advertise that it will creep down to the millionths of an inch. I have both in the garage.


BG
 
Posts: 760 | Location: Florence, SC | Registered: August 25, 2019Reply With QuoteReport This Post
DRR Trophy
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I used to purchase Kroil by the 55 gallon drums. Its not cheap but its the best I could find. Used it during large steam turbine disassembly.
 
Posts: 58 | Location: st louis mo | Registered: April 15, 2012Reply With QuoteReport This Post
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