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I would like to get a parts/bike view of replacing the brake/shifter cables.

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I would go to your local library and get a book on bike repair or go to your local bike shop and pay them, because you need special tools to adjust your brakes for the toe in on the brake shoes and they are tools that you do not use that often to invest in them.

Posted on Oct 07, 2010

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Shimano STX (combo brake and shifter) rear shifter does nothing up or down. Shifters move but do not engage the derailleur. The cable is tight and obviously not broken. Is the shifter broken or can...


You can't have end-to-end intact cable movement and NOT move the derailleur unless it is NOT tight to begin with. Look closer.

You need to figure out at which end the problem lies.

You can elevate the rear wheel (or hang the bike by the tip of the seat on a low branch) and pedaling it forward with your hand you can grab the bare exposed cable somewhere in its routing (usually along the down tube) and pull sideways on it (away from the bike) to see if the derailleur moves as expected when the cable REALLY moves. Then you can decide if the shifter is or is not controlling the cable.

Everything is replaceable as required.

Adjustments: http://www.parktool.com/blog/repair-help/categories/derailleur-systems

or use a search engine "how to...." for videos.

Jul 09, 2011 | Shimano Cycling

1 Answer

Old bike. everything is rusted and the back brakes don't link/work. what's the best way to deal with the rust and at least get the parts moving?


Spray WD40 or other penetrating oil on all moving parts. If you get a syringe from a pharmacy you can put oil into it an squirt it down the shifter and brake cable sleeves. If any moving parts are still stiff, leave the bike for a day to allow the oil to soak and penetrate. Try not to get any oil on the brake pads or rims.

May 28, 2011 | Mongoose Cycling

1 Answer

The gears will not change at all. It seems like the part that you twist to change gears is seized on both sides. This is causing the bike to ride very slow.


Actually, it's causing you to have no gearing options. If you were Lance Armstrong the bike would move fast ;0) even with a flat tire.

http://www.parktool.com/blog/repair-help/shift-levers-shifters

Crimped, corroded shifter cables can prevent accurate shifting. I'm thinking you need a bike mechanic to look at it.

After it's all fixed you might want to view some resources concerning shifting, braking and general riding skills. It's all out there.

Feb 23, 2011 | Pacific International Pacific Evolution...

1 Answer

I just bought a TREK bike with SHIMANO shifter/brake combination. The bike may be 10-15 years old (not certain). The shifters move but do not engage the cable. What should I do?


With a bike this old the best thing is too take the bike into your local bike shop and have them give it a once over to look for any potential problems. THIS IS A FREE SERVICE ALL SHOPS OFFER.

The problem specific could be as simple as the cable is very loose and not engaging the cable, or the cable could be so old that it is frozen inside the housing and nothing is happening. It could also be that the cable is broken, the shifter is broken or something other. It is impossible to diagnosis this particular problem with certainty without actually seeing and feeling the issue.

Bottom Line: Take it into a shop and get a mechanic to look at it.

Dec 12, 2010 | Shimano Xtr Mountain Bike Dual Control...

1 Answer

Hi, Just bought a new bike with shimano tiagra gearing. However the gear shifters doesn't seem to work. There is no movement in the cables when I try to shift gears. Do you have any idea for a quick fix or...


You don't mention which shifter(s) malfunction or if you're even pedaling the bike while shifting (I make NO assumptions).

If you operate the inner shift lever (NOT the brake lever) on each side through several clicks that should RELAX any tension in the shifter cables. Then if you pick the bike up and pedal it forward a couple of turns the front shifter should drop the chain the the lowest chainring and the rear derailleur should shift out the the smallest cog.

With the bike suspended (say, hanging from a low tree branch by the tip of the seat) you should be able to turn the cranks and manually pull sideways on either exposed shifter cable where it runs down along the downtube then release it.

This should cycle each respective derailleur through its entire range. If the cables don't travel sufficiently in this manner, the shifters will never make them do it either.

Perhaps you could CALL the Bike Shop and they would talk you through a quick operational check.

Apr 27, 2010 | Shimano 24 Speed Road Racing Bike Bicycle...

1 Answer

New shifters for deore xt x7 delrailer


Shimano make an "EZ fire" which is an integrated shifter/brake lever combination and cheaper than buying seperate shifters and levers.


e.g.
http://www.tredz.co.uk/.Shimano-Acera-8-Speed-EZ-Fire-ShiftersBrake-Lever_24339.htm


Feb 07, 2010 | Shimano Deore Xt Thumb Shifters 7...

5 Answers

Shifter is stuck in park


Billettechnologies.com sells a replacement cog to put your shifter backinto action. Their part replaces a factory plastic piece...no wonderthese are failing at a fast rate.
Here is the LINK to make this change out of parts...

Sep 22, 2009 | 2005 Dodge Magnum

1 Answer

Install Shimano revoshift. bike came with shift cable not attached. how do I attach it? thanks, barry lentz


Front or rear? Is the cable not in the shifter?
If the cable is not in the shifter, there will be a screw in the shifter (made of plastic, usually black) facing outward. You open this and shift the shifter into the highest gear, then slip the cable through and out the side that accepts the cable sleeve. Then you run it through the sleeve and to its appropriate derailleur (left hand=front, right hand=rear).

Sep 12, 2009 | Mountain Shimano Revoshift Bicycle...

1 Answer

Need to remove the cable from the 105 flight deck


This really depends on what cable you need to replace, the brake or the shifter.

For Shifter:
1. Shift the all the way down to the lowest gear using the small inside shift level for both the front or rear.
2.Disconnect the cable from the derailluer, likely a 5mm allen wrench will be needed.
3.Pull housing away from the shifter exposing the cable where it enters the shifter.
4.Compress the brake lever, this will expose a small hole on the inside of the shifter where the cable head is seated. For the right shifter the hole will be on the right, for the left shifter the hole will be on the left.
5. Push the cable in from where the cable entered the shifter. The head of the cable will now be exposed.
6.Pull the cable the rest of the way out of the shifter.
7.Install the new cable.

For Brake:

1. Disconnect the brake cable, likely with a 5 mm allen wrench.
2. Compress the brake lever. Keep it compressed until step 5.
3.Look straight in from the front of the bike, you will see the head of the brake cable.
4.Push the cable out of the shifter from the exposed area of the cable, then pull once you can reach the end of the cable.
5.Install a new cable.

Depending on the reason you have removed the cable, it is advised that you also replace the housing in most cases. For the shift cables this is not a problem, however, for the brake cables you will have to untape the bars to access the housing.

I hope this anwsers your question. Thank you

Jul 12, 2009 | Cycling

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