Question about Cycling
Posted by Anonymous on
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Posted on Jan 02, 2017
Go to http://techdocs.shimano.com/techdocs/index.jsp
Search in drop down list to go to all tiagra items and identify your particular components. Shimano are good at numbering their parts and you should find the number you seek on the bicycle component. You will usually be able to download an exploded parts diagram and service instructions. The service instructions are prefixed by the letters SI.
Posted on Nov 22, 2009
SOURCE: ST EF20 SHIMANO right
Remove the top plastic cover secured by two small screws
-At first glance you'll only notice half of the gears teeth, and as you shift the lever it will apear that the lever's push will bottom out and will not shift past the 4th or 5th gear.
- If you look close with a light you will see that teeth run completely along the entire gear and the teeth get super small just before the biggest tooth of the gear.
-the problem is that the shifter's cam (hooked lever) aka engager is seized and cannot swing into and bite into the smaller teeth.
-With some lube or even wd-40 spray the engager and exercise it with a small screwdriver so it can loosen up and spring into the small teeth.
-Start shifting and releasing several times to work the the lube in
- Install the cover and you're done!
Posted on Nov 03, 2011
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