|
|
| *Vultures Knob>>>Mountain Bike |
Can you clearly explain adjusting DISC brakes on a mountain bike? |
My front disc brake is rubbing against the pad, my adjustments are not proving adequate and I fear some more drastic steps must be taken but can't find considerable explanations on what to do. The brakes are Tektro Novela - decent websites will all around bike maintenance would be most welcome. Cheers! I think that the Tektro you are talking about is a cable actuated brake. Here are some general instructions: 1. Remove the caliper from the frame. Inspect the pads for wear. If pads are glossy, roughen them with 100 grit sandpaper until the gloss is gone. be careful not to round off the edges. If the disc was waxed or cleaned with a silicone compound the pads may need to be replaced due to contamination. 2. Spin the wheel slowly to check for disc warpage. If disc is warped it must be replaced. 3. Screw the barrel adjuster on the brake lever in all the way until 2 threads show . If the caliper has an adjuster (unlikely) do the same adjustment. 4. Very lightly grease the shafts of the bolts that hold the caliper on the frame. Do NOT grease the threads. 5. Reinstall the caliper. Using Loctite Blue (temporary hold) on the threads is recommended. 6. Loosen the cable anchor on the caliper and pull the cable through. Using your thumb push the actuator lever up very slightly, then tighten the anchor. 7. SQUEEZE the brake lever HARD, then check adjustment. If too tight, adjust the barrel adjuster on the brake lever in slightly. If too loose, adjust the barrel adjuster out. Most disc brakes except the very cheapest ones are self centering, so pay attention to any spacers or washers between the frame and caliper and make sure to replace them as they came out. Source(s): 26 years in the industry I don't have experience with disc brakes myself but i've always found the Park Tools website to be helpful for repair tips. Try this link: http://www.parktool.com/repair/byregion.... If that doesn't work try www.parktool.com/repair and look around. i think thats a cable actuated system, right? going on that, look at the position of the caliper in relation to the rotor. unscrew the bolts that hold the caliper to the fork/frame. you can slide the caliper left or right until the pads are completely centered on the rotor. this is the major adjustment area. thread the bolts back in when the alignment is good. do it slowly cuz the caliper may move while screwing them in, so hold the caliper still. there should also be some kind of adjustment on the backside of the caliper facing the spokes. turn the knob or use an allen key, whatever it takes. you want this side as close to the rotor as possible since this side doesnt move. spin the rim, f you dont hear any noise, then twist the pad in 1.2 turn. spin the rim again and listen for noise. continue doing this until you hear noise. when you do, back it off 1/4 turn. the actuating arm can be adjusted via the barrel adjuster at the end of the arm. this model should definately have one. spin the rim and twist the barrel until you hear noise then back it off again a little. you can also make adjustments from the barrel on the brake lever. threading that in or out will assist in changing the throw of the lever. if you want general bike maintainence, check out utahmountianbiking.com they have directions for doing almost anything on a bike and is accompanied by pictures. Since all brakes are different, go to the manufacturer's website and look for a downloadable manual or troubleshooting guide. Here is a PDF file for your brakes: http://www.tektro.com/04support/pdf/ain.... |
| Tags |
| Kids Bike Schwinn Bike Cruiser Bike Road Bike Folding Bike Mountain Bike |
Bike Categories--Copyright/IP Policy--Contact Webmaster |