How to adjust the V-brake of a mountain bike

Pull the wire:

Tighten the driving nut on the brake lever to the tightest (turn clockwise to the end), and then prepare to pull the cable. Thread the wire first and pre-tighten it on the set screw. Then leave a 5mm gap between the brake pad and the rim, and lock the fastening screws.

Pinch the two brake arms with your hands respectively, the one with the wire pliers can come in handy, and the bobbins that do not have the wire pliers can use the vise instead. Tighten the brake cable (please do not use too much clamping force of the vise, otherwise the brake cable will be flattened. Similarly, the locking force of the locking screw on the brake arm should not be too large, just moderate), lock Tighten the set screw on the brake arm.

Adjust so that the strokes of the two brake arms are the same:

Squeeze the brake lever with your hand and observe the stroke of the two brake arms. The goal of our adjustment is to try to make the travel of both brake arms the same. There is a tension screw on each brake arm. Use a Phillips screwdriver to adjust the tension of the brake arm (that is, the angle of the outward length). Clockwise is to increase the tension, increase the opening angle, and vice versa. Repeatedly adjust the tension screws on both sides so that the strokes of the brake arms on both sides are basically the same.

Adjustment of brake stroke:

The adjustment of the stroke can be adjusted by the stroke nut on the brake lever. Turning counterclockwise is to reduce the braking stroke, and vice versa. Adjust it to your liking for comfort. After adjusting, remember to turn 2 clockwise tightly.

Brake pad position and angle adjustment:
Now comes the most critical moment, the adjustment of the position of the brake pads.

A lot of people have asked why my brakes click when I squeeze. The main problem is that the position and angle of the brake pads are not adjusted properly.
The brake pad is not attached to the rim in parallel. The rear end of the brake pad is 2-3mm more than the front end from the rim, that is to say, the brake pad is obliquely close to the rim.

Fold a dime over the rear end pad of the brake pads, and again push the pads hard against the rim. Roughly adjust the position of the brake pad, do not rub the tire

When you are ready to lock, please use the gesture in my photo with your left hand: use the tiger's mouth to press the upper end of the brake arm, and press the index finger to the rear end of the brake pad. Use the right hand to hold the hexagon socket lock fastening screw. Left and right hand coordination. Someone has to ask again, why do you have to ask for this gesture? Because I found that during the locking process of some brake pads, especially when it is approaching the locking stage, the brake pads will rotate together with the rotation of the inner hexagon, so the previous adjustment will be wasted in an instant.

Final tweaks:

When the brake pads on both sides are fixed, please continue to pinch the brake lever to observe the stroke of the brake arms on both sides (adjustment of the position of the brake pads may change the stroke of the original brake arms on both sides), and then fine-tune the tension screw and stroke nut , so that the hand feels the most comfortable state. Then idle the front and rear wheels respectively to see if the brake pads are rubbed, and adjust the tension screws where the rubs are. Then put on the cable cap, and fold the excess brake cable to the card slot

Trial by bike:

The main thing is to check whether the brakes will rattle. Ride anywhere and see if the brakes rattle. If they do, repeat step 4.