Join Date: May 2004
Location: Southern California
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Originally Posted by bigk4
right im havin a problem with my hayes hfx9's couple of weeks ago i had them re tightened then a few days later they come real loose again and now they are ridicously loose dont start brakin the bike until the lever is about half an inch from the handlebar, im wondering how to tighten them up im never to hydro's and never tightened them up before so if ya wanna help out you'll have to tell me what to adjust here n there, thanks in advanc
This is a very common issue with the Hayes. I've had the adjusting screw loosen on me during a long ride - very annoying and dangerous.
For this procedure, you'll need a 2mm Allen wrench and a few drops of a thread locking compound, like Locktite "blue" - (I think the product number is 242). Most "multi-tools" have a 2mm Allen wrench, but often hard to use because of clearance. You can go to a hardware store and buy a single, 2mm wrench for like 50 cents.
Locate the adjusting screw, which is by the pivot of the brake levers. The screw essentially sets the amount of travel needed to activate the hydrualic plunger to activate the brakes. Turn the screw clockwise and the levers grab the brakes quicker.
My trick is to expose as much screw thread as possible by turning the screw counterclockwise, place a drop of Locktite onto the thread, turn the screw clockwise until the levers are set to my preference. Basically, that's it. And let the Locktite set for the recommended period, like 24 hours.
A second trick is to dab the Locktite onto the end of a toothpick and then dab that onto the threads. It's easier to place the Locktite onto the screw without getting it onto undersireable areas, like the pivot.