I ordered a bicycle, it came with a front wheel detached. I took the v-brake noodle out to loosen the v-brake arms to let the wheel through. However, I cannot get the v-brakes aligned properly. The right arm is waay too much away from the rim. Even if I move the arm with my hand, it doesn't touch the rim (so it doesn't seem like it's just a matter of cable tension. Is there some way to move the arm closer?
I can see one metal spacer between the rubber part of the pad and the brake arm.
V-brake pads use a set of spherical washers which sit on each side of the arm to allow the pad angle to be adjusted.
The typical correctly-assembled order would look like:
- concave washer (flat towards pad)
- convex washer (bump side sits in the "bowl" of the concave washer, flat side against brake arm)
- brake arm
- convex washer (flat side against brake arm)
- concave washer (bowl side against bump)
- thin washer
Some pads use two different thicknesses of concave washer, so you'd skip 2 and use the thicker washer at 3. See step 2 of these instructions: https://si.shimano.com/pdfs/si/SI-8JF0A-002-ENG.pdf
There seems to be several issues:
- Firstly, the pad position on the right arm looks a bit off. Release the pad nut, and adjust the pad to be perpendicular to the rim while pushing the arm with your hand against the spring so that the arm is close to the rim. Then, while continuing to push the arm, tighten the pad nut. Repeat with left pad if it's off too.
- Secondly, the cable seems loose. Rotate the barrel adjuster counterclockwise (usually at the lever) a bit. Put the noodle in the left arm, and compress both arms with your hand so they touch the rim. Tighten the cable using the cable anchor bolt. You should now have a brake that continuously touches the rims. Not very useful as it drags with no clearance.
- Thirdly, adjust the barrel adjuster. Rotate it a bit clockwise to release tension. This creates clearance at the brakes.