Nope. The plugs almost always break just above the threads, as the plug is much
thinner above the nut than it is below.
Thinking about this now, it seems that engineering a failure point into the
plugs would make a LOT of sense; if the plugs were designed to shear just below
the threads, that
So your broken plugs came out with the threaded portion intact?
I wonder if you could have applied PB Blaster to the tip inside the
pre-chamber, via the injector hole, and if that would have helped.
Max Dillon,
Charleston SC
On Jun 26, 2014 6:52 PM, "John Reames" wrote:
>
> It's off to go to th
It's off to go to the machine shop that the local dealers send them to.
It is my understanding that if they break, it is just above the threads due to
the 2+" long annular space between the seating surface and the threads filling
with hard-pack carbon.
Additionally, the reamers do not remove ca
Are you taking the head to a machine shop?
Did the plugs break leaving threads in the head, or did the threaded parts
of the plugs come out?
Max Dillon,
Charleston SC
On Jun 26, 2014 3:03 PM, "John Reames" wrote:
> I have not changed them before in this car; I put over 80k on it highway
> driv
I have not changed them before in this car; I put over 80k on it highway
driving, and since then it has been a mix of city and highway.
Disabling EGR in a turbo is a little more complicated, and I haven't messed
with it.
I believe that anti-sieze on the bodies of the plugs is likely the second
John,
Is this car mostly driven in the city?
Is the EGR still working?
I'm wondering if measures can be taken to reduce carbon buddy build-up,
reducing the risk of glow plugs breaking off.
Max Dillon,
Charleston SC
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FYI, regarding torquing and loosening sequences, it looks like they are the
same as the om603, both for the head and for the camshaft bearing caps.
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John W Reames
jream...@verizon.net
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Mobile: +14437915905
> On Jun 23, 2014, at 22:59, John Reames wrote:
>
> Yeah. And used a
Yeah. And used a torque wrench when attempting to pull them. I never exceeded
30 ft-lbs.
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John W Reames
jream...@verizon.net
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Mobile: +14437915905
> On Jun 23, 2014, at 13:41, Larry Turner wrote:
>
> did you let some penetrating fluid soak on them for a few days? That and s
Discussion List
Subject: Re: [MBZ] Om606 head
On 23/06/2014 12:56 PM, Curt Raymond wrote:
> Sometimes stuff is gonna break, the 30 lbft he took it to isn't much.
> I was worried a couple weeks ago when I did the glow plugs in the Jetta,
> they're very small. I soaked 'em good
@okiebenz.com
> Subject: Re: [MBZ] Om606 head
> Message-ID: <53a86f1c.6020...@comcast.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> You wrote " (12mm diameter?) wire brush" -- sounds pretty much like a
> .22 cal rifle bore brush...
Except that .22 is like 6mm...
So maybe a .44 or .45 caliber bore brush.
-Curt
Date: Mon, 23 Jun 2014 14:17:00 -0400
From: Larry Turner
To: mercedes@okiebenz.com
Subject: Re: [MBZ] Om606 head
Message-ID: <53a86f1c.6020...@comcast.net>
Content-Type: text/plain; charset=ISO-8859-1; format=
Would an impact wrench (if you could get it in there) work better than a
regular socket/ratchet/bar?
--R
On 6/23/14 2:35 PM, Randy Bennell wrote:
On 23/06/2014 12:56 PM, Curt Raymond wrote:
Sometimes stuff is gonna break, the 30 lbft he took it to isn't much.
I was worried a couple weeks ago
On 23/06/2014 12:56 PM, Curt Raymond wrote:
Sometimes stuff is gonna break, the 30 lbft he took it to isn't much.
I was worried a couple weeks ago when I did the glow plugs in the Jetta, they're
very small. I soaked 'em good and warmed up the engine and each came out easy. I
used a 1/4" ratchet
You wrote " (12mm diameter?) wire brush" -- sounds pretty much like a
.22 cal rifle bore brush... available in brass, copper, stainless and
nylon. Some people get real fancy when cleaning long range
target/hunting rifles
LarryT
On 6/23/2014 9:32 AM, John Reames wrote:
Put 'em back tog
t
Date: Mon, 23 Jun 2014 13:41:39 -0400
From: Larry Turner
To: mercedes@okiebenz.com
Subject: Re: [MBZ] Om606 head
Message-ID: <53a866d3.5050...@comcast.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
did you let some penetrating fluid soak on them for a few days
did you let some penetrating fluid soak on them for a few days? That and
some heat might stop them breaking
LarryT
On 6/23/2014 6:04 AM, John Reames wrote:
3/6 glow plugs snapped.
I had given it a 50mi run to heat it up before trying to pull them; the intake
manifold was so hot that I ne
On 23/06/2014 5:04 AM, John Reames wrote:
3/6 glow plugs snapped.
I had given it a 50mi run to heat it up before trying to pull them; the intake
manifold was so hot that I needed gloves to handle it.
I still used a torque wrench to attempt to pull them; they snapped at less than
30ft-lbs.
--
Put 'em back together with a liberal coat of anti-sieze applied all the way
down the main body, from the threaded part to the top edge of the bevel is my
guess.
And pulling them more often than every 100k miles... (Those could have had as
much as 200k on them!)
The annoying thing is that the r
That stinks.
Amy ideas to prevent them from breaking?
Max Dillon,
Charleston SC
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3/6 glow plugs snapped.
I had given it a 50mi run to heat it up before trying to pull them; the intake
manifold was so hot that I needed gloves to handle it.
I still used a torque wrench to attempt to pull them; they snapped at less than
30ft-lbs.
--
John W Reames
jream...@verizon.net
Home:
Ah yes. A Mitchell 300. The 240D of tackle. I still keep one in my box.
On Jun 22, 2014 7:18 PM, "John Reames" wrote:
> Got the thing off today; took about 4 hours.
>
> Those bolts are a pain in the shoulders. (I ended up throwing a cheater
> bar on my breaker bar for a total of 3.5 ft of handle
Maybe I missed something, why did you need to pull the head?
Sent from my iPhone
> On Jun 22, 2014, at 6:18 PM, John Reames wrote:
>
> Got the thing off today; took about 4 hours.
>
> Those bolts are a pain in the shoulders. (I ended up throwing a cheater bar
> on my breaker bar for a total
Got the thing off today; took about 4 hours.
Those bolts are a pain in the shoulders. (I ended up throwing a cheater bar on
my breaker bar for a total of 3.5 ft of handle, and was still leaning on it
quite hard!)
In other news, I took the little dude to a Cub Scout fishing trip (catch and
re
d I'll
extract it for you but it'll probably be Friday before I can get to it.
-Curt
Date: Wed, 18 Jun 2014 18:45:50 -0500
From: OK Don
To: Mercedes Discussion List
Subject: Re: [MBZ] Om606 head bolt torque sequence
Message-ID:
Content-Type: text/plain; charset=UTF-8
No, but
I suspect it will likely be the same as the 603 heads, seeing as they are
somewhat related.
--
John W Reames
jream...@verizon.net
Home: +14106646986
Mobile: +14437915905
> On Jun 18, 2014, at 19:45, OK Don wrote:
>
> No, but from what I remember from the 617 and 603 heads, you start in the
> c
No, but from what I remember from the 617 and 603 heads, you start in the
center, and work outwards in a spiral. YMMV - might be better than nothing
if you can't find the proper sequence.
On Wed, Jun 18, 2014 at 9:48 AM, John Reames wrote:
> Would anyone happen to have a diagram floating around
Would anyone happen to have a diagram floating around?
Thanks
-j.
--
John W Reames
jream...@verizon.net
Home: +14106646986
Mobile: +14437915905
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