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irlbeck A-C'S 
Orange Level
Joined: 28 Sep 2009
Location: Crestview FL.
Points: 689
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 Topic: D12 Series 3 issue
Posted: 12 Apr 2018 at 8:46pm |
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Pulled off the head. Found a tiny piece of brass in the #3 cylinder. Looks like it may be one of the screw heads. No sign of the butterfly. Everything looks good. No damage to anything. Just need to get a new butterfly and it will be back running soon.
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B,C,CA,(2)WC's,(4)WD's,(2) WD45'S, 45Diesel, (2)D12'S Series 2, D12 Hiclear,(2)D12 Series 3, HD3, D17NF (3)D17 Series 4 Diesels, M-100 Grader,8550,A few Lawn tractors lots of other AC stuff
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HudCo
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 4072
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Posted: 12 Apr 2018 at 4:36pm |
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might be a good time to get the head done before its wore right out anyway. or at least vaccuum test test the valves to see how well there seating
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irlbeck A-C'S
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Joined: 28 Sep 2009
Location: Crestview FL.
Points: 689
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Posted: 12 Apr 2018 at 3:50pm |
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Couldn't find anything in the manifold or in the valves. I may try to run a scope in the spark plug holes this afternoon. Don't want to take a chance and mess something up so I'll be pulling the head.
Going to need a head/manifold gasket set as well as a butterfly for the carb. at a minimum. Will probably order them now but may wait to see if I can pick them up from a vendor at the Goto in Gray.
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B,C,CA,(2)WC's,(4)WD's,(2) WD45'S, 45Diesel, (2)D12'S Series 2, D12 Hiclear,(2)D12 Series 3, HD3, D17NF (3)D17 Series 4 Diesels, M-100 Grader,8550,A few Lawn tractors lots of other AC stuff
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JayIN
Orange Level
Joined: 18 Dec 2009
Location: SE/IN
Points: 1982
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Posted: 12 Apr 2018 at 6:58am |
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I dropped 1 tiny carb screw into a F250 motor and it grenaded the piston. Good luck!
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sometimes I walk out to my shop and look around and think "Who's the idiot that owns this place?"
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DiyDave
Orange Level Access
Joined: 11 Sep 2009
Location: Gambrills, MD
Points: 55276
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Posted: 12 Apr 2018 at 6:44am |
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I'd pull the manifold, and see if its up there, somewhere...
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corbinstein
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Joined: 31 Jul 2014
Location: Oklahoma
Points: 796
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Posted: 12 Apr 2018 at 6:25am |
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first place I would check is the manifold and the top of the intake valve to see if it's stuck there.
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johnkc
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Joined: 22 Sep 2009
Location: KCMO
Points: 730
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Posted: 12 Apr 2018 at 12:19am |
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That can make guy say Dammit
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I support the development of hybrid automobiles and alternative fuels as I need DIESEL fuel for my ALLIS CHALMERS!
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PaulB
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Joined: 12 Sep 2009
Location: Rocky Ridge Md
Points: 5276
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Posted: 12 Apr 2018 at 12:10am |
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The heads of the screws have most likely blown away into oblivion. You may or may not find the butterfly.
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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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Hubert (Ga)engine7
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Joined: 12 Sep 2009
Location: Jackson Cnty,GA
Points: 6610
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Posted: 11 Apr 2018 at 7:45pm |
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Pulling the head is a smart move. Try to find the two screw heads while you are in there also. Let us know how far in everything went.
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Just an old country boy saved by the grace of God.
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irlbeck A-C'S
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Joined: 28 Sep 2009
Location: Crestview FL.
Points: 689
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Posted: 11 Apr 2018 at 7:15pm |
When I started the tractor it went full throttle. I shut off the engine. While I was checking linkages I found that the throttle shaft was able to pull out of the side of the carb. This is what I found. The heads of the screws sheared off.   Throtttle plate is gone. I pulled the manifold and could not locate it. Looks like I'll be pulling the head off. 
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B,C,CA,(2)WC's,(4)WD's,(2) WD45'S, 45Diesel, (2)D12'S Series 2, D12 Hiclear,(2)D12 Series 3, HD3, D17NF (3)D17 Series 4 Diesels, M-100 Grader,8550,A few Lawn tractors lots of other AC stuff
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