this post was submitted on 15 Jun 2024
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Need help routing the cable on my Shimano Deore XT front derailleur (FD-M739) [SOLVED] (lemmy.ml)
submitted 5 months ago* (last edited 5 months ago) by [email protected] to c/[email protected]
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Edit: The way I had it in the photos is correct. Thanks for helping me out, those who chimed in!

Original question:

I replaced the straight handlebars with risers on my mountain bike, and because of the slightly longer distances involved, I have to replace the brake and gear cables with slightly longer ones.

Unfortunately, I did not take a picture of the cable clamp for the front derailleur before I undid it. Now I'm clueless as to how to route the replacement cable - basically the same problem as this poster on RetroBike, except their derailleur is different from mine.

I have super old parts, so I've had a hard time finding documentation online. The best documentation I've found is the following:

In the service instructions, third column, "SIS adjustment" section, three-quarters of the way down, it says:

  • Cut off any unnecessary cable, attach an end cup, and hook it onto the pin.
  • Note: Pass the cable through as shown in the illustration.

What is absolutely throwing me for a loop is the illustration seems to show the cable running from the bottom upward, but... how? Can anyone help me figure out what I'm missing? I feel like a dumb dumb.

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[โ€“] [email protected] 1 points 5 months ago* (last edited 5 months ago) (1 children)

Look on the underside of the crank housing. Is there a plastic track for the cable to go around and point up?

I'm not sure if I understand your question correctly, but here's what the cable fixing thingie looks like with and without the bolt.

Without the bolt, a vertical track for the cable to run through is visible left of the screw hole:

Operate the derailleur by hand to see which way it needs to be pulled, cable pills one way, spring pulls other way.

When I pull the derailleur to the right by hand, the cable bolt moves upward - this means it's a top pull, yeah?

Does this all mean that just running the cable straight down to the left of the bolt (the way I have it) might actually be the correct configuration?

[โ€“] [email protected] 2 points 5 months ago

Try the lever with the cable taut.