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John Deere Tractors Discussion Forum
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John Deere D head installation

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B Duncan

07-19-2006 09:34:02




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Hi guy's

Well after a 10 month break im about to reassemble the D after it was discovered that the head gasket was leaking. ( I had no clue that the gaskets needed was going to be $300) The kit has copper washers instead of the original lead ones. Is this ok? The head gasket does not have a marked end as to which end meets the block or head. The gasket has a lip rolled around the cylinders on one side and is flat on the other. Does it matter which side it mates to? What kind of sealer is needed, Copper spray or oil or neither? Do I need to coat the head studs with any sealer as well? I have a lil over a month to get her running for a show coming up. Thanks in advance for all the help

Thanks again
Brad D

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B Duncan

07-20-2006 03:13:37




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 Re: John Deere D head installation in reply to B Duncan, 07-19-2006 09:34:02  
Thanks guys for the tips. I will use aviation sealer. The head has been shaved so it is true. I will try deere for the lead washers. Thanks again for the help.

Brad D



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TylerARK

07-20-2006 05:53:15




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 Re: John Deere D head installation in reply to B Duncan, 07-20-2006 03:13:37  
$300 ???
The head and block replacement gasket set AD2675R which subs to RE524062 lists at Deere for $225. The AR21785 Head/ valve gasket set lists at Deere for $41. Both include 18 of the 264R lead washers.
Sounds like someone is making a little more profit.
Tyler



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Glen in TX

07-20-2006 09:17:58




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 Re: John Deere D head installation in reply to TylerARK, 07-20-2006 05:53:15  
JD has been putting the copper washers in newer gasket sets for our 2 cylinders for some time now. You would only get the lead gaskets in maybe a NOS set they didn't change. Lead washers should still be available seperate. Prices are going to depend on each dealers mark up. Local dealer here gets 240.75 for AD2675R and 43.15 for AR21785 and 84.53 for AD2677R. 240.75 + 84.53 = $325.28 . Others D gasket sets show to be invalid now but can get most of them separate or from Greg Stephens theoldtractorcompany.com or make them yourself. The old sets we last got from Deere with the cork engine cover and trans cover gaskets were nothing but a overpriced joke anyway and you are better off making many of those gaskets yourself if you don't want leaks later there.

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jas

07-19-2006 13:01:09




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 Re: John Deere D head installation in reply to B Duncan, 07-19-2006 09:34:02  
I, like Glen, use the avation gasket sealer in the small plastic container with a brush inside. Even after a new gasket and sufacing they sometimes still seep a little, But I have found with a few hours of run time they seal up. I just put one of the felpro kits in and it seems to be ok. Also last winter I did the head job on my 48D. The head gasket was aound $30 bucks from mother Deere. The rocker box gasket was insane!! but mine was apparently apart just shortly before I got the tractor so I reused it. The one in the felpro kit was regular gasket paper unlike the metal one from Deere and probably much cheaper. Good luck.

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Glen in TX

07-19-2006 10:03:13




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 Re: John Deere D head installation in reply to B Duncan, 07-19-2006 09:34:02  
Even the aftermarket (Felpro) gasket sets for D run about $220-270 or so. Some have probably used the copper washers with success. I've never used the copper washers on a D and always liked using the lead washers on them. 2 lead washers stacked under each nut as the parts manual recommends 18 -- 264R lead washers for the 9 studs. I would get the lead washers from JD and use them. If you can't find those washers let me know as I have several boxes of them. I&T JD-4 recommends 208 ft. lbs on head nuts. Some of the teflon thread sealers work well on the stud threads in block or Permatex sealers. You won't need and sealer on nut threads as that is what the soft lead washers do. You want to trim off the excess lead also after you are done so it doesn't break off and end up stuck on the oil pump screen later. Just remember you always put the smooth side of head gasket against the block unless special instructions tell you otherwise. Don't soak the new style head gaskets in oil like the old manuals tell you. Several opinions on head gasket sealers on this board and many use copper coat brush on or spray on. I like using the Permatex aviation brush on sealer but also had good success with just spraying on several thick coats of high heat aluminum paint and install gasket while paint is still wet. Have also used the brush on or spray on Permatex high tack. I hope you had the head and block surfaces planed off true or you could be buying another set of gaskets.

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Buster

07-19-2006 09:46:16




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 Re: John Deere D head installation in reply to B Duncan, 07-19-2006 09:34:02  
Flat side towards the block, I always soak my head gaskets in oil before assembly.



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