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Hayes HFX-9 hydraulic disc brakes question

1391 Views 6 Replies 6 Participants Last post by dumper, Jul 17, 2006

Tapoutorpassout5

Discussion Starter · Jul 11, 2006

I just have a question about making an adjustment on my brakes, i have had my bike for a couple of months now and my rear brake is starting to feel really soft i have to pull the rear brake lever in almost twice as far for the rear brakes to start working..Is there a way that i can adjust the brakes somehow so that i dont have to pull the lever in as far, and if so how am i supposed to do it...

Any help would be appreciated..

Thanks..

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XSL_WiLL

· #2 · Jul 12, 2006

There's a 2.5mm allen at the knuckle of the lever (near the master cylinder). That's the reach adjustment. Over time, they tend to back themselves off. Play with that, see if it helps.

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cougar9000

· #3 · Jul 12, 2006

perhaps the factory bleed was sub-par, and air bubbles in the hose have risen to the master cylinder. hopefully, if its a new bike, your lbs will bleed it for free.

yay.

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dogonfr

· #4 · Jul 12, 2006

Put some Lock-Tite on that adjusting screw in fact put it on both. Hayes kinda forgot to add that to the adjuster.

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mtbike_AK

· #5 · Jul 17, 2006

Where can I find parts for hayes FX9 disc brake? My rear break lever/master cylinder is leaking through the little plastic stopper each time I pull the brake?

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dogonfr

· #6 · Jul 17, 2006

mtbike_AK said:
Where can I find parts for hayes FX9 disc brake? My rear break lever/master cylinder is leaking through the little plastic stopper each time I pull the brake?

You can order through your LBS but your best bet is to order the HFX-Mg master, nuch better.

:thumbsup:

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dumper

· #7 · Jul 17, 2006 (Edited)

I think you need to just replace the bladder...

mtbike_AK said:
Where can I find parts for hayes FX9 disc brake? My rear break lever/master cylinder is leaking through the little plastic stopper each time I pull the brake?

no need to replace the whole master cylinder... yet! Or, perhaps the leak is due to fluid expansion. If so, rotate master cylinder to upright position, insert bleeder tube, remove rear wheel and push pads back to their fully retracted position, remove bleeder tube and replace plug. Good luck.

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