Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the March Giveaway for HONBIKE Uni4 long-range commuter E-bike valued at $1699 ⚡


Reconditioning STI System
#1
A buddy of mine brought me his 2001 Trek 470 that he just bought and his front derailleur/derailer was stuck. The STI shifter would not release the cable to shift it down. At this point I realized I have no idea how to service these STI systems. PLEASE HELP>
Thanks Guys.

  Reply
#2
I have had the same problem due to lack of use of the STI.<br />
I just used WD40 squirted into the mechanism. Operated the STI a few times and it freed itself. I then re-lubed it with a thin oil.<br />
It did it a couple of times but has now been O.K. for 12 months.<br />
If you pull the STI brake back, you should see the little hole where the gear cable goes. That's where I injected the WD and oil.<br />
I have never stripped an STI down so don't know if you can service them.<br />
It may be worthwhile fitting a new cable inner to make sure it's not jamming, but you need to get the shifter in No. 1 position to remove the old cable.

Ride hard or ride home alone!
  Reply
#3
Yeah that's my issue is that it is stuck in the number two position. The mechanism won't release to shift back down. I will try the WD-40 and I'll report back to see if that works.

  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
The all new Specialized Sirrus, yay or n...
Today 12:33 AM
Help me choose an electric long-tail bik...
Yesterday 03:38 PM
Just got my bike fixed up, looking for a...
03-28-2023 11:38 PM
Is Presta valve lock nut useful?
03-28-2023 05:02 PM
Everesting show of hands
03-28-2023 02:43 PM
CHANGING 1x8 into 2x8
03-28-2023 05:46 AM
Souke Sports Cycling Apparel Discussion ...
03-27-2023 11:54 PM
Handlebars are either too loose or too t...
03-27-2023 07:49 PM
What are your best biking places in your...
03-27-2023 07:39 PM
Avoiding punctures on road bike
03-27-2023 07:23 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. ichitan
28 posts
no avatar 2. ReapThaWhirlwind
26 posts
no avatar 3. Lss555
13 posts
no avatar 4. enkei
10 posts
no avatar 5. GirishH
10 posts