Front U-Brake

Rear U-Brake Option 1

Rear U-Brake Option 2

U-Brakes

 

Begin by adjusting the pads of the U-brakes using a 10mm wrench. Make sure the

 

pad is hitting the rim and not the tire. Ideally the front of the pad should hit the rim

 

approximately 1mm before the rear pad.

 

Front U-Brake

 

Slide the brake cable and housing through the Housing Barrel and through the

 

cable anchor bolt. Set the cable clearance of 1mm between the brake pads and the

 

rim. Tighten the cable anchor bolt. All instructions shown are if you are looking at

 

the bike from the front. For brake adjustments, use a 13mm box end wrench and

 

a 5mm allen wrench. Loosen the 5mm allen bolt. For the drive side (left) of the

 

bike turn the spring tension nut with a 13mm box end wrench counter-clockwise to

 

increase tension on the spring. For the non-drive side (right), turn spring tension

 

nut with a box end wrench clockwise to increase tension on the spring. When the

 

desired tension is achieved hold the tension nut with the 13mm wrench and tighten

 

the 5mm allen bolt. The tension on each side should be equal so that the brake

 

arms move the same distance when the brake is activated.

 

Rear U-Brake

 

Option 1: Next, tighten the Cable Carrier to the brake cable approximately 20mm

 

from the brake arms when they are closed against the rim. Attach the Straddle

 

cable to the carrier. Hook cable end into the brake slot, pull excess straddle cable

 

through the cable anchor and tighten the cable anchor. Continue with “For Both

 

Options” below. Option 2: Place brake housing into the frame housing stops. Pull

 

brake cable tightly and thread across through the opposite cable anchor bolt. Tight-

 

en cable. Repeat for other side. Continue with “For Both Options” below.

 

For Both Options: For brake adjustments, use a 13mm open end wrench and a

 

5mm allen wrench and loosen the 5mm allen bolt. For the drive side (right) of the

 

bike turn the spring tension nut with a 13mm open end wrench counter clockwise to

 

increase tension on the spring. For the non-drive side (left), turn the spring tension

 

nut with a box end wrench clockwise to increase tension on the spring. When the

 

desired tension is achieved, hold the tension nut with the 13mm wrench and tighten

 

the 5mm allen bolt. The tension on each side should be equal so that the brake

 

arms move the same distance when the brake is activated. PLEASE NOTE that

 

some BMX frames have the U-Brake flipped and mounted below the seatstays. The

 

direction to tension the springs will still be oriented to how the picture is oriented.

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Image 61
Pacific Cycle HF3305 manual Front U-Brake, Rear U-Brake