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-   -   How do I remove a stripped m10 head bolt? (http://www.peachparts.com/shopforum/showthread.php?t=259560)

Oracle12345 08-23-2009 11:46 AM

its appears the op doesnt know whats going on here. Your only choice to remove stripped threads is to drill it out. However if you have rounded head then you have more options such as irwin extractors.

badgator 08-23-2009 02:56 PM

Success !!!
 
Quote:

Originally Posted by Billybob (Post 2276389)
Any thoughts as to how this advice contradicts the head bolt removal procedure, sequence, and cautions detailed in the FSM particularly regarding the relatively long length of this in-line six alloy head and the price for a replacement. Do you suppose that having a single bolt torqued to spec out of the 26 total securing the cylinder head in position is advised? Unless of course you already know its trash and it will be un-salvageable.

I tightened the rest of the bolts back up right away.

Successfully removed wth one of these in about 2 minutes. $5.99

http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200396167_200396167

3/8 socket on a 3/8 drive I really doubted it would work until I heard the

"tink":)

badgator 08-23-2009 03:00 PM

Quote:

Originally Posted by Oracle12345 (Post 2276617)
its appears the op doesnt know whats going on here. Your only choice to remove stripped threads is to drill it out. However if you have rounded head then you have more options such as irwin extractors.

Hmm, OK

babymog 08-23-2009 04:40 PM

Quote:

Originally Posted by t walgamuth (Post 2276557)
They take a tremendous amount of torque to break loose. Each one which is removed with the breaker bar with cheater applied will feel like something is going to break just before it breaks loose, but nothing ever does. Use a good quality breaker bar though.

I have a craftsman and I use a 3/4" piece of conduit that is about 16" long as a cheater bar. It is just a little too small to slip on and has to be pounded on which is nice because it stays that way. I generally just leave it on there.

Maybe I'm missing something here, but I'm just an average size/strenght guy, and I have removed three 603 heads with just my 1/2" drive Craftsman ratchet, ... one of them in a junkyard.

Are they supposed to be tougher than that or are the cast-iron heads what's being discussed here?

jt20 08-23-2009 04:45 PM

remove the head of the bolt by drilling out the center to a wide enough radius.

the head will come off and it will remain as a post in the block.

it will then be easier to remove since there is no clamping action along the bolt's length - the majority of the friction has been removed.

t walgamuth 08-23-2009 05:04 PM

Quote:

Originally Posted by babymog (Post 2276774)
Maybe I'm missing something here, but I'm just an average size/strenght guy, and I have removed three 603 heads with just my 1/2" drive Craftsman ratchet, ... one of them in a junkyard.

Are they supposed to be tougher than that or are the cast-iron heads what's being discussed here?

The iron head diesels are what I am talking of. 616 617.

t walgamuth 08-23-2009 05:05 PM

Quote:

Originally Posted by Brian Carlton (Post 2276608)
A highly experienced and wealthy mechanic such as yourself out to treat himself to a proper 18" breaker bar.;)

This cheater is applied to an 18" breaker bar, which I have had for at least 30 years!;)

No sense straining myself. I use it on lug nuts too, so I don't have to pull so hard.

badgator 08-23-2009 05:37 PM

Quote:

Originally Posted by jt20 (Post 2276776)
remove the head of the bolt by drilling out the center to a wide enough radius.

the head will come off and it will remain as a post in the block.

it will then be easier to remove since there is no clamping action along the bolt's length - the majority of the friction has been removed.

This was a last resort for me, not needed.

Quote:

Originally Posted by t walgamuth (Post 2276785)
This cheater is applied to an 18" breaker bar, which I have had for at least 30 years!;)

No sense straining myself. I use it on lug nuts too, so I don't have to pull so hard.

Had my trusty old Craftsman breaker bar + 2' floor jack handle (not needed)

Suspect PO / mechanic f'd up the splines as the m10 went in straight and

deep - NO gunk in splined bottom.

WINGAS 08-23-2009 06:10 PM

Had the same issue, and as wal says, it was because I didnt clean out the oil from my first head bolt. Rounded that sucka nasty.

Borrowed an extraction set, Craftsman, from a buddy. It goes on reverse twist, so when you try and loosen , it digs into the head hard. Worked like a charm.

babymog 08-23-2009 06:20 PM

Quote:

Originally Posted by WINGAS (Post 2276833)
<<snip>>Worked like a charm.

When exactly have you had a charm actually "work"? So in effect, what you're saying is that you hoped it'd work, but never saw any quantifiable result?

;~)

badgator 08-23-2009 06:28 PM

Quote:

Originally Posted by WINGAS (Post 2276833)
Had the same issue, and as wal says, it was because I didnt clean out the oil from my first head bolt. Rounded that sucka nasty.

Borrowed an extraction set, Craftsman, from a buddy. It goes on reverse twist, so when you try and loosen , it digs into the head hard. Worked like a charm.

Congrats,

Remarkably, the extractor I used went in about 1/4" and that includes the

chamfer on the extractor.

I was a machinist for 10 years, then rebuild machines, now I only have a

lathe and mill at home.

Makes it easy to make parts, + friend owns steel yard.

Well, and a mig, plasma, ac/dc welder for toys.

The real problem was only distance from home!

badgator 08-23-2009 06:35 PM

My Reward...
 
My reward for the day...

The butcher block had 16/20 # shrimp -bought eight pounds AND fresh cut NY strips

for $4.99 # + $2.99 3oz lobster tails.

Yeah, we had a victory feast today!:D

Strife 08-23-2009 06:39 PM

Quote:

Originally Posted by t walgamuth (Post 2276557)

This problem was most probably caused by not clenaing out the recess in the top of the bolt where the allen fits in. If you clean that out and are very diligent about getting the allen pushed down all the way I don't believe you will ever strip out the insides. You also need to be very careful about keeping it straight while you are applying torque.

I completely agree with both of these points; also, DO NOT USE CHEAP TOOLS. I have pretty good quality tools and I've aready put an uncomfortable amount of wear on one or two of the hex's.

badgator 08-23-2009 06:51 PM

Wrong
 
Quote:

Originally Posted by Strife (Post 2276852)
I completely agree with both of these points; also, DO NOT USE CHEAP TOOLS. I have pretty good quality tools and I've aready put an uncomfortable amount of wear on one or two of the hex's.

I ensured the bottoms of the broached area was clean AND bit was in line AND

used a quality bit. Even though the bit looks good, I might not use it again.

I know how to make gears, machine splines, and broach parts.

I used to make parts from USA-1 monster truck axles to valves for the Space Shuttle.

t walgamuth 08-23-2009 09:59 PM

Well, it sounds like the PO did the damage. Sorry it came to a head for you.


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