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Advice on hydraulic brifter lever adjustment

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Advice on hydraulic brifter lever adjustment

Old 05-29-20, 09:56 AM
  #1  
Chuckles1
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Advice on hydraulic brifter lever adjustment

Bought a new gravel bike last year, first time with hydraulic disc brakes. Brakes are Shimano BR4770 and levers are Shimano ST4720. Both Tiagra labelled. Love the braking, especially one finger braking from hoods, usually on long downhill gravel runs.

Minor problem is, upshift paddle presses against the back of my ring finger while braking, only on rear brake lever. I know there is an adjustment to move the lever further from handlebar, but I wonder two things:

1) If I adjust it so the brake lever is further away from bars, will it solve the problem, or will it still engage at the same point and just have more slop in it? 2) is there any chance moving the lever further out will introduce air into the brake by creating a temporary vacuum that air will leak into.

Not eager to do anything that will cause me to have to bleed brakes for the fist time; hoping to reserve that activity for next off-season. Thanks in advance for advice.
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Old 05-29-20, 10:29 AM
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SethAZ 
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I think you're looking for page 54 of the dealer manual from the Shimano site. I haven't done the specific adjustment you're looking at, but the dealer manual says nothing about requiring a brake bleed after performing this, so I'd think it probably won't be a problem.

Btw, I'd never done a brake bleed before until the last two weekends. Since it was new to me I procrastinated and hesitated a little out of some suspicion that there might be some voodoo or whatever involved, but I finally just jumped in and did it, and it turned out to be pretty simple and straightforward. Now that the unknown-ness of it has been dispelled to me, I wouldn't hesitate to do it again if necessary.
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Old 05-29-20, 08:46 PM
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Le Mechanic
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This is the same process for the Tiagra STI shifter as well...

Last edited by Le Mechanic; 05-29-20 at 08:47 PM. Reason: More descriptive answer
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