Question 1

Is this truly just for hydraulic disc brakes, or will it work for mechanical disc brakes too?

Accepted Answer

I tried this tool with method of holding down the brake lever and tightening the mounting bolts and it did not work as you think it would. The outboard side was too close to the rotor, basically touching. Then I tried again, but this time tightening the inboard (fixed) caliper adjustment bolt so the brakes squeezed the rotor with this tool inserted. Then tightened the mounting bolts WITHOUT holding down the brake lever. Then loosened the inboard caliper adjustment bolt back to normal position and removed the tool. This time it worked. No rub. I'll try it on my other bike with mechanical disc brakes to see if I get the same result.

Question 2

Would I need to loosen the caliper and then insert the tool in? Squeeze the brake and then tighten again? Is that how this works?

Accepted Answer

This is a precise tool. A bit difficult to verbalize but I will try. Very important, do not work brake lever after pads have been removed.
1). After removing pads, loosen caliper screws so caliper can move sightly and expand the caliper with proper caliper tool.
2). Place Caliper spacer (yellow or orange) in caliper if you have the caliper off frame.
3). Put in new pads and secure to caliper.
4). Place Hayes gauge on both sides of rotor between brake pads.
5). Activate brake lever 4-5 times. Place a strong rubber band around lever to keep pressure on.
6). Tighten caliper bolts.
7). Release rubber band from brake lever.
8.) Spin wheel and you should not hear rubbing of pads against rotor. If you do, repeat procedure.

Hope this is beneficial.

K-

Question 3

Is it going to work for sram etap hydraulic road disc caliper? i am mad about noise all the time..

Accepted Answer

You can cut the noise by sanding the pads and the disc itself to remove that shiny glaze and any dirt that got in between them. That usually works for awhile. The problem may not be with the caliper. Try different pads and rotors first.

Question 4

Can you use this with Shimano XT brakes?

Accepted Answer

You can and i have but usually you dont need it with Shimano disc brakes of any level. Pump the brake lever till tight, tighten bolts very slowly and strap the lever down for a while and usually they are good.Much needed on Hayes brakes..Shimano brakes are the best....Good luck.Great tool, a must have....

ASIN	B002SQTRXK
Best Sellers Rank	#439,968 in Automotive ( See Top 100 in Automotive ) #1,397 in Brake Tools #10,834 in Automotive Replacement Brake System Parts
Brand Name	Hayes
Customer Reviews	4.5 4.5 out of 5 stars (487)
Exterior Finish	Aluminum
Global Trade Identification Number	00844171030851
Item Weight	1.28 ounces
Manufacturer	Hayes
Manufacturer Part Number	98-23972
Material Type	Alloy Steel
Model Number	Feel R Guage
Number of Items	1
UPC	844171030851

Hayes Brake Pad & Rotor Alignment Tool

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