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jmarshall
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Joined: 01 Jul 2014
Posts: 23


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PostPosted: Sat Jan 09, 2021 11:07 am    Post subject: 2640 Reply to specific post Reply with quote

I'm rebuilding the engine in my 1980 John Deere 2640 and am ready to install the new sleeves, JD
calls for a soap to use to put on the sealing "O" rings and I forgot to order any, can I use soap
like Dawn or is JD soap special? I don't want to use anything that would make them swell.
Thanks, John
 
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tim s
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Joined: 01 Nov 2008
Posts: 13592
Location: Somerset Ohio

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PostPosted: Sat Jan 09, 2021 12:07 pm    Post subject: Re: 2640 Reply to specific post Reply with quote

Yes Dawn is what it use here.
 
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tim s
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Joined: 01 Nov 2008
Posts: 13592
Location: Somerset Ohio

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PostPosted: Sat Jan 09, 2021 12:10 pm    Post subject: Re: 2640 Reply to specific post Reply with quote

Be sure to get the o-ring grooves clean,, any small amount of residue will cause the liner to clip the o-ring,,look closely after installing each liner for a possible clipped O-ring,, when you check as you go you know which one got damaged,,it's best to know now if it happens...
 
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jmarshall
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PostPosted: Sat Jan 09, 2021 4:34 pm    Post subject: Re: 2640 Reply to specific post Reply with quote

Thanks Tim, any advice is appreciated.
John
 
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johndear720
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Joined: 12 Aug 2001
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PostPosted: Tue Jan 12, 2021 8:21 pm    Post subject: Re: 2640 Reply to specific post Reply with quote

I have used a little bit of tire soap as well. So far no issues. Have you replaced the balancer bushings and if so do have access to the tool to "dimple" them into the hole in bore? I made mistake of not replacing mine with an inframe and about 40 hours later spun a balancer bearing and wiped out the block. It now lives without the balance shafts.... Seems the 2640 is known for balance shaft issues.
 
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