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My rear derailleur won’t shift after up after 3rd cog

5 min read

Asked by: Connie Ward

Why won’t my rear derailleur shift up?

Often sluggish and reluctant shifts are due to debris buildup between the shift housing and the shift cable, kinks in the cable and/or housing, or worn out housing. As above, make sure your derailleur, hanger, and cassette are tight, and your wheel is properly seated and tight.

Why is my derailleur not shifting down?

If derailleur does not succeed in shifting the chain into the next largest ring or hesitates, add cable tension. Once you get to the largest cog, shift back into the smallest rings. If there is any hesitation or the chain will not shift back into the smaller rings, remove cable tension until the shift is successful.

What causes bike gears not to shift?

This is usually caused by an overly tight gear cable or the low limiting screw that needs adjusting. You can test this by shifting to the lowest gear and seeing if your front derailleur is in line with the smallest chainring. If not, try adjusting the limiting screw. Alternatively, your gear cable may be too tight.

How do you fix a rear derailleur not moving properly?

Quote from video: This video will address some common sources of poor rear derailleur performance and how to fix. Them Calvin Jones here Park Tool Company. The most common fixes for shifting problems are the basics

How do I know if my rear derailleur is bent?

Quote from video: When we're trying to shift. Down becomes quite erratic or vice-versa. The key is to look at the rear derailleur we can see it's bent slightly inward.

How do I know if I need a new rear derailleur?

If there’s play, get a new one. Also, drip some Tri-Flow or something into all the pivots. If it’s really dirty and sticky, it’ll have a harder time with the shift you describe. If with clean, lubricated pivots the derailleur still won’t move well, you probably need a new one.

What does the H limit screw do?

The main purpose for the limit screw is to prevent the chain from going into the spokes or into the frame. Tightening the H-limit screw restricts the limit as shown. The goal is to dial it in as close as possible to the inward cog, as shown in the previous photo.

How do you adjust the B screw on a rear derailleur?

Quote from video: And shift the rear derailleur to the biggest cog. I'm gonna start off by backing the B screw all the way out. So I'm gonna do that by turning this counter clockwise.

Do Shimano shifters wear out?

Yes, they do wear out -some faster than others- but you should be fine sticking with what you have.

Why can I move my shifter but it won’t move into gear?

The real reason for a faulty gear shifter differs from vehicle to vehicle. However, the most significant probable cause is a poor construction or attachment of a flexible cable to the gear selector and transmission connection.

How do you reset gears on a bike?

Quote from video: Here is your front derailleur at the front of the bike here this one has two chain rings therefore. You have two gears.

How long does a rear derailleur last?

Good quality rear derailleur can last between 3 to 5 years, when unbranded or low-quality ones can last for 2 years, no matter what the durability of the rear derailleur the jockey wheel will wear after time and it can be replaced very cheaply with new ones, on the other hand, front derailleur can last almost

How much does it cost to fix a bent derailleur?

There can be a range of prices for replacement derailleurs, starting around $20 and going all the way up to $700.

How do I know if my hanger or derailleur is bent?

The most accurate way to check hanger alignment is to do what professional bike mechanics do: use a hanger alignment tool. This tool bolts to the hanger in place of the rear derailleur and allows alignment checks against the rim. This tool also allows you to correct the alignment by rebending the hanger.

How did my derailleur get bent?

Quote from video: Похожие запросы

How do you fix a stuck gear on a bike?

Quote from video: See I now see that Springs right back it only took a little bit of spray break. But in order to get to the right spot to spray the spray break you had to take the cover off.

How do you fix the stiff gears on a bike?

Quote from video: If there was I go ahead and flush this with like wd-40. Until I got it moving freely and then spray with lubricant.

How do you fix a shift on a bike?

Quote from video: And just try to get a lot of wd-40 in there just kind of fill it in there and then start working the ratcheting mechanism here the levers try to get them to move.

How do you fix a derailleur?

Quote from video: Pull the chain out and you're ready to remove the old derailleur. Most railers are fastened on with a hex bolt. So you'll need your allen keys for this most of the time you can reuse your shift cable.

Can a rear derailleur be fixed?

Some problems can be repaired trailside while others require parts and tools most riders don’t commonly carry. Your bike’s drivetrain is really a simple system, and if you know what to look for, you can easily repair your derailleur yourself.

How much does it cost to fix a derailleur?

There can be a range of prices for replacement derailleurs, starting around $20 and going all the way up to $700.