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

New: Take Part in the May's Giveaway: Win the LIVALL PikaBoost 2 E-bike Conversion Kit


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
POLL: Are non-recumbent riders looking a...
Yesterday 06:42 PM
Third best reason to ride a bent or trik...
Yesterday 10:13 AM
What was your first bicycle?
Yesterday 04:45 AM
Is anyone riding with music?
Yesterday 04:32 AM
Great Giro
Yesterday 04:18 AM
What are the best pitch black dark night...
Yesterday 01:11 AM
The great thing about trikes
06-05-2025 12:06 PM
Biking with helmet laws
06-04-2025 10:23 AM
"There's been better times
06-03-2025 09:10 PM
Where are you from and What is your favo...
06-02-2025 06:22 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. Criminal
23 posts
no avatar 2. rydabent
18 posts
no avatar 3. GirishH
17 posts
no avatar 4. Flowrider
17 posts
no avatar 5. SPINMAN
12 posts