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

New: Take part in the September Giveaway for a Spider Rear Rack and a Heavy Duty Drybag from aeroe


Rear shifter does not shift
#1
new to the forum--I need some help

here's a step by step of what has happened

1. rear shifter stopped working. would not even move. model SL-510 Shimano Deore(older model i know)

2. First I thought maybe the rear derailer was caked up with mud--for all it does is rain here lately..so With my handy Zihn book i overhauled with little problem.---still shifter does not move

3. replaced the cable---nothing

4. replaced the shifter(was surprised I could find the original model)--still nothing

5. I think this may be a cable tension issue or possible a high/low screw adjustment--but not sure--tightened cable- nothing--have not touched the high/low screws


So what's next--I am at a loss of what to do --Zihn book has no repair technique on a shifter that does not shift--is this a cable tension thing--I would rather fix this myself than take it to a shop to save some $

thanks all
in addition---what happened was I was riding up a hill(mountain biking)--got to level spot at top and the shifter just stopped--only front derailer moved---3 gears and 2 miles from my truck--lol
  Reply
#2
pictures please.

1. disconnect the cable from the derailluer and remove the rear wheel.
- does the shifter now move freely?
- can the derailluer be moved across its range of travel without undo force? It should spring back to the smallest cog location, and move smoothly over the whole range of travel side to side.

we await your answers, so that we can provide the next step in the diagnosis.
Nigel
  Reply
#3
Only because mine is very close to this one and I thought it would be good to keep it in one thread...

I installed a new Alivio rear shifter but it won't shift. I had thought maybe it was the cable so I replaced that, but it will pull the dérailleur back... but the dérailleur won't shift at all. It isn't getting caught up in the housing.. I can move it all by hand and have lined everything up... it just won't shift...

Has anyone had this?
  Reply
#4
If you have a old cable thread it through the housing back buy the derailleur and attach it. pedal the bike by hand and pull the cable by hand and see how it acts.
Take the cable that is on the bike but pull by hand and start clicking your shifter to feel if it moves
let us know
There are two kinds of people in the world, "Those who help themselves to people, and those who help people!"
  Reply
#5
Hey, I just did both... the cable is correctly attached and when I put it through the gears it does move properly. I did as you suggested and pulled it by hand... but it just pulled backwards, there was no shifting or indexing... very strange!

Thoughts?
  Reply
#6
(08-01-2011, 10:53 PM)Ontheverge Wrote:  Hey, I just did both... the cable is correctly attached and when I put it through the gears it does move properly. I did as you suggested and pulled it by hand... but it just pulled backwards, there was no shifting or indexing... very strange!

Thoughts?

If I understand what you are saying, when you pulled on the cable attached to the shifter, there was no shifting or indexing, you could just pull it. This means you need a new shifter.

Please note that there is not indexing in the derailleur, it is in the shifter.
Nigel
  Reply
#7
Sorry, I was just looking at the title of the post and there is probably some confusion if you were just reading it. The shifter is fine and working, the brand new derailleur is not changing gears at all..
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Hello from North Carolina
Yesterday 07:05 PM
frame choices
Yesterday 10:08 AM
Front Derailer fails to shift to the big...
Yesterday 06:12 AM
Raleigh "Trail" bike
Yesterday 05:02 AM
Know about the Hercules?
Yesterday 04:18 AM
Pedals: Clip vs. Clipless
09-20-2020 07:43 PM
90's Raleigh R600
09-20-2020 06:21 PM
Proper way to torque a crank bolt on a s...
09-20-2020 03:37 PM
Where are you from and What is your favo...
09-20-2020 02:19 PM
Tour de France 2020
09-20-2020 12:08 PM

[-]
Top 5 Posters This Month
no avatar 1. Jesper
36 posts
no avatar 2. G_M
14 posts
no avatar 3. Papa Dom
10 posts
no avatar 4. Painkiller
10 posts
no avatar 5. Sagan97
10 posts