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stuck oil drain plug


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#1 old coot OFFLINE  

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Posted November 13, 2016 - 10:44 AM

what i have is an bolens 1886  K582 kohler with a oil drain plug that will not budge...I've thrown everything at it from penetrating oil to heat , pipe wrenches etc....the plug is now almost round , the plug just will not move, who ever had it before me must never have changed oil or tightened so tight nothing will remove it now...anyone who has an 1886  with the k582 knows there really isn't much room to get at the plug so drilling it out isn't an easy option as I would have to pull the engine and i'm not set up for that   any ideas at all ? I may have to pump the oil out threw the fill tube but I don't like that idea as I don't think you can vacuum all the oil out



#2 JBRamsey OFFLINE  

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Posted November 13, 2016 - 10:52 AM

First rule of moving anything stuck, if wrenches start to slip--stop. Once you round something off, you make your job much more difficult.

I've had success welding a nut or bolt on top of a stubborn fastener, but I don't think I would try that in this case.

If a pipe wrench won't grip the plug, you really have no choice but to drill it out. Get everything ready to pull the engine and then call a friend or two to lift it out. Then be slow and steady on drilling and tapping the threads.

Good luck.
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#3 DougT ONLINE  

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Posted November 13, 2016 - 11:17 AM

If it's pipe thread, try tightening it a little. If it tightens, it will come right out.


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#4 KC9KAS ONLINE  

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Posted November 13, 2016 - 11:48 AM

If you have the room.....Clamp a really good vise grip on rounded plug. Make sure you have the grips turned the correct direction for removal of the plug. (Like a pipe wrench, there is a difference)

Tap the vice-grip (or end of the plug if there is anything sticking out) with a hammer while trying to remove the plug.

With constant pressure on the grips and the vibration of the hammer I have had good results! 

 

Keep us posted on your success!


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#5 chieffan ONLINE  

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Posted November 13, 2016 - 12:21 PM

Sears makes a set of 7 sockets made for rounded plugs, nuts and bolts.  One socket will fit several sizes.  Have had these for several years so not sure how good the new ones are or if they still stock them.  Each socket has 6 small bars inside.  As you turn the socket a built in cam forces the bars against the nut, etc.  The harder you pull the harder it grips.  Have had real good luck with them. 

Grip Case.JPG     Grip Sockets.JPG     Grip Socket.JPG

 

Another option if you can get to it good enough is to weld a larger nut onto the remains of the plug, let it cool and put a socket on it.

 

Lot of the plugs are Chinese made.  #1 poor quality and soft.  #2 they are not true to US Standard size.  #3 they are not straight on the sides but taper slightly towards the threaded end.  Three different ways to spell trouble.


Edited by chieffan, November 13, 2016 - 12:50 PM.

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#6 JBRamsey OFFLINE  

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Posted November 13, 2016 - 01:42 PM

Pipe plugs are supposed to be tapered.
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#7 MFDAC ONLINE  

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Posted November 13, 2016 - 02:21 PM

Hi Old Coot, I'm not familiar with your engine, but came up with a way to change oil in the engine that I re-powered my MF12G without making a big mess. The location of the drain plug was the problem in this instance. Here's a link.

 

http://gardentractor...-7#entry726008

 

Go to post #95.

 

DAC


Edited by MFDAC, November 13, 2016 - 02:22 PM.

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#8 LilysDad ONLINE  

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Posted November 13, 2016 - 02:38 PM

If you have the room.....Clamp a really good vise grip on rounded plug. Make sure you have the grips turned the correct direction for removal of the plug. (Like a pipe wrench, there is a difference)

Tap the vice-grip (or end of the plug if there is anything sticking out) with a hammer while trying to remove the plug.

With constant pressure on the grips and the vibration of the hammer I have had good results! 

 

Keep us posted on your success!

Yup! Vise Grips trump pipewrenches.


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#9 chieffan ONLINE  

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Posted November 13, 2016 - 06:17 PM

Pipe plugs are supposed to be tapered.

The threaded end but not the square end.  All pipe threads are tapered.


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#10 JBRamsey OFFLINE  

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Posted November 13, 2016 - 10:25 PM

[quote name="chieffan" post="726806" timestamp="1479079039"]The threaded end but not the square end.  All pipe threads are tapered

That's what I meant--the threads are tapered. That's what makes them seal.
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#11 Bruce Dorsi OFFLINE  

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Posted November 14, 2016 - 08:25 AM

  All pipe threads are tapered.

 

Not true !


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#12 old coot OFFLINE  

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Posted November 14, 2016 - 10:48 AM

well guys i finally got the plug out ..couldn't find a pair of vice grips that i was told would work better than a standard pair , i found  them at a industrial supply place fairly close to home...., irwin vise grip model 10 CR....( I can't believe lowes  or ace hardware didn't stock this model ) they have a v notch/ grip jaw and man they took hold of that rounded plug and with a few taps of the hammer , out she came   the standard jaws on vise grips just wouldn't do it  so a 15 dollar bill and all is well ... , in my 62 years I have had some plugs or bolts that gave me fits but this one took the prize  thanks guys for all your help


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#13 DougT ONLINE  

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Posted November 14, 2016 - 10:58 AM

Not true !

What pipe thread isn't tapered? I realize there are threaded pipes without tapered thread but I don't believe they are referred to as pipe thread. Some steam fittings come to mind.


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#14 KennyP ONLINE  

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Posted November 14, 2016 - 11:04 AM

And I was about to suggest these!

DSCN2393.JPG

 

I would suggest you go to a good hardware store and see if you can find a brass plug with the hex head to put back in there. Might make it easier to remove next time.


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#15 Bruce Dorsi OFFLINE  

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Posted November 14, 2016 - 09:37 PM

What pipe thread isn't tapered? I realize there are threaded pipes without tapered thread but I don't believe they are referred to as pipe thread. Some steam fittings come to mind.

 

 

http://www.engineers...reads_13376.htm  


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