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D2 pony runs to fast

D2 pony runs to fast

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1canoeman1
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I have to use the choke to control the high speed,throttle has no affect. I put in a new carb kit but did not drill out any of the passages or change the little jet 0n the bottom of the bowl. at this time i'm stuck.
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Mon, Nov 10, 2014 8:27 AM
cojhl2
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Something hosed on the way you have your governor and throttle linkage hooked up. The governor should slow the engine down, and the throttle when you pull it out should force the engine to idle.
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Mon, Nov 10, 2014 9:25 AM
1canoeman1
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Reply to cojhl2:
Something hosed on the way you have your governor and throttle linkage hooked up. The governor should slow the engine down, and the throttle when you pull it out should force the engine to idle.
your right CoJn12, I hooked up all the linkage the way it was but it seems that when throttle plate closes it does not seem to change anything, i know that does not sound right. I never took the carb off all the way down as I can't see how to get a wrench in there. I better take another look to be sure I have my facts right. Thanks for the reply.
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Mon, Nov 10, 2014 10:32 AM
cojhl2
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Reply to 1canoeman1:
your right CoJn12, I hooked up all the linkage the way it was but it seems that when throttle plate closes it does not seem to change anything, i know that does not sound right. I never took the carb off all the way down as I can't see how to get a wrench in there. I better take another look to be sure I have my facts right. Thanks for the reply.


Hi Canoeman, are you sure the throttle plate closes? Are you looking down in the carb while it is running?(that could be dangerous BTW). If the throttle plate does close then I'm stumped and we gotta wait for higher echelon members for help.

The other thing I can think of is you have somehow locked the governor to wide open, but even then the throttle button should override the governor for idle.

Did this all function ok before you worked on it?
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Mon, Nov 10, 2014 11:35 AM
Mike Meyer
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Reply to cojhl2:


Hi Canoeman, are you sure the throttle plate closes? Are you looking down in the carb while it is running?(that could be dangerous BTW). If the throttle plate does close then I'm stumped and we gotta wait for higher echelon members for help.

The other thing I can think of is you have somehow locked the governor to wide open, but even then the throttle button should override the governor for idle.

Did this all function ok before you worked on it?
Check your governor arm is moving freely, and then look down at the bottom where that governor arm attaches to the throttle arm on the carby intake manifold, there is a short pin in that lower throttle arm that is controlled by the throttle rod you push and pull, check when you pull the throttle button outwards to idle the pilot motor that it is actually pulling that lower throttle arm on the carby towards you too.
Regards
Mike
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Mon, Nov 10, 2014 2:12 PM
drujinin
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Reply to Mike Meyer:
Check your governor arm is moving freely, and then look down at the bottom where that governor arm attaches to the throttle arm on the carby intake manifold, there is a short pin in that lower throttle arm that is controlled by the throttle rod you push and pull, check when you pull the throttle button outwards to idle the pilot motor that it is actually pulling that lower throttle arm on the carby towards you too.
Regards
Mike
can actually twist by each other causing you to lose control of the Throttle Plate. I can't remember if it was a "J" or "U" series. But it was frustrating as the Hood had to come off to see what was going on!
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Mon, Nov 10, 2014 7:20 PM
1canoeman1
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Reply to drujinin:
can actually twist by each other causing you to lose control of the Throttle Plate. I can't remember if it was a "J" or "U" series. But it was frustrating as the Hood had to come off to see what was going on!
Thank s for all the replies. This is my !st. piece of Cat equipment , and being 76 ,I'm a little slow on getting things done. This pony has not run in many years so I had many of the common problems that go with that. But with the help of you all I have made progress, got it running but now have a bad oil leak that i am fixing with your help. When it did run I had the throttle control problem and am trying to get out in front of that.so thanks again.
drujinin I can't quite make out your reply seems part of it is cut off.
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Tue, Nov 11, 2014 1:13 AM
drujinin
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Thanks Garlic Pete and for the record I finally remembered the issue was on a 5J!
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Tue, Nov 11, 2014 3:05 AM
cr
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Reply to drujinin:
Thanks Garlic Pete and for the record I finally remembered the issue was on a 5J!
Here is a picture of the linkage that Garlic peat is referring to. The little tab wears out on the bottom and will twist out of the way when you go to slow it down. You can either make a new tab about 1/4" longer or build it up with a wire welder so it can't twist out of the way.

EDIT you can also play with or replace the little angle bracket that that the rod goes through and is bolted to the intake manifold at the same location.
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Tue, Nov 11, 2014 3:39 AM
Dan Pratt
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Reply to cr:
Here is a picture of the linkage that Garlic peat is referring to. The little tab wears out on the bottom and will twist out of the way when you go to slow it down. You can either make a new tab about 1/4" longer or build it up with a wire welder so it can't twist out of the way.

EDIT you can also play with or replace the little angle bracket that that the rod goes through and is bolted to the intake manifold at the same location.
Here is another view of that setup with the speed "decelerator" rod and finger.
Attachment
Dan22 - 1936 22 Narrow, 1937 22 Wide, D2 5J, D4D
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Tue, Nov 11, 2014 4:23 AM
1canoeman1
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Reply to cr:
Here is a picture of the linkage that Garlic peat is referring to. The little tab wears out on the bottom and will twist out of the way when you go to slow it down. You can either make a new tab about 1/4" longer or build it up with a wire welder so it can't twist out of the way.

EDIT you can also play with or replace the little angle bracket that that the rod goes through and is bolted to the intake manifold at the same location.
Thank you Garlic Pete,drujinin, and CR. Your clear explanations and picture is sure to help me solve my problem. Thank you for your interest in my problem.

1canoeman1
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Wed, Nov 19, 2014 12:43 AM
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