Dual Carb Linkages

68FORDJBM · Post by **68FORDJBM** » Wed Oct 21, 2009 9:59 am

I finally had a chance to clean the carb on my 68 F100 360 and discovered that there are two linkages - one of which just sort of dangles and looks like it once connedted down near the transmission. Since the truck runs, shifts, turns and stops I was assuming that I could just remove the extra linkage but thought I better ask the experts. I have a picture of the carb/two linkages but can't seem to figure out how to attach a picture to this post.

Why would there be a second linkage that is hooked up to nothing and should I just get it out of there?

Thanks,

Jeff

Redcap · Post by **Redcap** » Wed Oct 21, 2009 10:42 am

Sounds like the trans kickdown?

fordman · Post by **fordman** » Wed Oct 21, 2009 11:19 am

it could be the kick down rod. or is it the trapese linkage hook up and part of it isnt hooked to the firewall?

Post by **DuckRyder** » Wed Oct 21, 2009 11:30 am

Pictures would be a great help, but yes it sounds like it might be thetrans kickdown.

Redcap · Post by **Redcap** » Wed Oct 21, 2009 1:01 pm

fordman wrote:it could be the kick down rod. or is it the trapese linkage hook up and part of it isnt hooked to the firewall?

Also real possible.

68FORDJBM · Post by **68FORDJBM** » Wed Oct 21, 2009 3:34 pm

I didn't spend a whole lot of time looking at it but, my gut feeling is that it is the trans kickdown since it looked like it should have been hooked up to the transmission. However, there was another linkage hooked up to the tranmission that was right next to the mystery linkage.

I'm not a mechanic so what is the purpose of the kickdown and is there any reason it would be disconnected?

Any help on getting the pictures uploaded to this post?

I'll have another look tonight and get back.

Thanks,

Jeff

Post by **DuckRyder** » Wed Oct 21, 2009 3:56 pm

The purpose of the kickdown is primarily to allow the transmisson to down shift at wide open (or close to it) throttle sometimes reffered to as "passing gear" although it isn't a special gear. Depending on the transmission it could also have an impact on part trottle shifts firmness and timing. On AOD transmissions it is critical (but they were not used in our turcks.).

Unless someone used an improper carburator of maniflod theres no good reason for it being disconnected.

You can display pictures in two ways.

1 attach it directly by using the upload attachements tab below the posting box (there are size restrictions)
2 upload the photo to one of the photohosting services, paste the URL of the photo between the tags created by pressing the "Img" button above the posting window. Some services also provide an IMG code option and if so you can copy and paste it directly into the posting window.

fordman · Post by **fordman** » Wed Oct 21, 2009 6:15 pm

it does sound like the kick down linkage if it goes to the trans. the trans will have two rods one is for shifting and the other would be the kickdown rod.

BobbyFord · Post by **BobbyFord** » Wed Oct 21, 2009 6:32 pm

68FORDJBM · Post by **68FORDJBM** » Wed Oct 21, 2009 6:39 pm

That makes sense. So, the kickdown should be hooked up to the transmission right next to the shifter?

On a similar note, where can a guy get a good detailed listing of parts and descriptions that go with the diagrams from the technical diagrams provided on this site. The diagrams are great but the numbers listed don't have descriptions.

I tried to upload the attachment and bmp is not allowed so I'll try the other suggestion.

Thanks again!

68FORDJBM · Post by **68FORDJBM** » Wed Oct 21, 2009 6:50 pm

Here is a picture. I hope this works.

The top, darker linkage is the one just dangling down my the transmission and not hooked up

fordman · Post by **fordman** » Wed Oct 21, 2009 6:51 pm

yes the black rod is the kickdown rod.

Post by **DuckRyder** » Wed Oct 21, 2009 7:00 pm

Yep, thats the kick down rod.

It is an automatic right?

Something doesn't look quite right to me though, could you get a slightly closer picture? Does the arm that the black rod is connected to move freely or is it springloaded forward. Also, is there an adjustement screw?

Here is a rough diagram...

http://www.fordification.com/tech/image ... e_8cyl.jpg

68FORDJBM · Post by **68FORDJBM** » Wed Oct 21, 2009 7:03 pm

It's an automatic. It is just dangling there very loose since it's not hooked up to the tranny. I didn't see any spring loaded adjustment screws. I'll try and take a better picture tonight with the good camera.

BobbyFord · Post by **BobbyFord** » Wed Oct 21, 2009 7:05 pm

68FORDJBM wrote:It's an automatic. It is just dangling there very loose since it's not hooked up to the tranny. I didn't see any spring loaded adjustment screws. I'll try and take a better picture tonight with the good camera.

The spring should be on the carb linkage, pulling the carb linkage and the kickdown rod up (or, if you prefer, forward).

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