Kickdown adjustment on carb
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Senior User
Joined: May 2004
Posts: 184
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From: Montana
Kickdown adjustment on carb
How do I adjust this screw properly? It has wiggled loose and is of no effect. If you stomp the throttle it wont kickdown as supposed to.
http://picasaweb.google.com/pmilne/M...12608396877922
http://picasaweb.google.com/pmilne/M...12608396877922
Lead Driver
Joined: Jan 2003
Posts: 9,893
Likes: 12
From: Ohio
I would suppose you would get it to react to the carb when you get WOT. Trial/error I would guess? Keep moving it down til it works when you want it.
I'm sure there might be an actual measurement, but not sure who would know that?
I'm sure there might be an actual measurement, but not sure who would know that?
New User
Joined: Jan 2008
Posts: 0
Likes: 24
On a carb with a cable instead of the arm that you have.
this is how it's adjusted.
THROTTLE KICKDOWN LINKAGE ADJUSTMENT
1. Move the carburetor throttle linkage to the wide open position.
2.Insert a 0.060 inch; thick spacer between the throttle lever and the kickdown adjusting screw.
3. Rotate the transmission kickdown lever until the lever engages the transmission internal stop. Do not use the kickdown rod to turn the transmission lever.
4.Turn the adjusting screw until it contacts the 0.060 inch; spacer.
5.Remove the spacer.
this is how it's adjusted.
THROTTLE KICKDOWN LINKAGE ADJUSTMENT
1. Move the carburetor throttle linkage to the wide open position.
2.Insert a 0.060 inch; thick spacer between the throttle lever and the kickdown adjusting screw.
3. Rotate the transmission kickdown lever until the lever engages the transmission internal stop. Do not use the kickdown rod to turn the transmission lever.
4.Turn the adjusting screw until it contacts the 0.060 inch; spacer.
5.Remove the spacer.
Fleet Mechanic
Joined: Aug 2007
Posts: 1,815
Likes: 248
From: Piney Woods of East Texas
The above adj is what the book says. My method still works. They just want some extra play so you do not bottom out.
Dashpots only effect closed throttle. My 68 had no solenoid (does have factory air) , to old for high tech device.
They would have added another fuse, 4 is way to many.
Dashpots only effect closed throttle. My 68 had no solenoid (does have factory air) , to old for high tech device.
They would have added another fuse, 4 is way to many.
Last edited by blue68f100; Sep 7, 2007 at 02:42 PM.
Thread Starter
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Senior User
Joined: May 2004
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From: Montana
Originally Posted by blue68f100
Hold the throttle wide open and check to see if you have any play on the kick down rod. If so use the screw to adjust it out (at WOT).
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Fleet Mechanic
Joined: Aug 2007
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From: Piney Woods of East Texas
Correct, should be around 1/2 - 1 turn off zero. 0.060 is almost 1/16" if you want to eye ball it.
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Thread Starter
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Senior User
Joined: May 2004
Posts: 184
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From: Montana
I held it WOT and the kickdown rod could move toward the firewall another inch or so. I screwed the screw in until the play was out minus 1/16". That put the screw almost totally screwed in.
Was this correct?
Was this correct?
Fleet Mechanic
Joined: Dec 2006
Posts: 1,338
Likes: 6
From: UPSTATE NY
just get it to where you can eyeball it and it looks good, then take it for a spin and see how it feels and if need be then adjust it a little more. sometimes with these old trucks thats the best method. thats what i did and my kickdown linkage works like a swiss watch