How to Adjust Promax Bike Brakes

How to Adjust Promax Bike BrakesPromax is a Chinese-owned company which makes a variety of parts for both road and mountain bike use. Handle bars, seat posts and brake systems are featured products of Promax. Mechanical and hydraulic disc brakes as well as linear pull brakes such as the SC100D are available to fit a variety of bikes. It may be necessary to adjust bike brakes following new installations or a period of use. This can typically be accomplished with a few simple tools.

Instructions

Difficulty: Moderate

Promax Linear Brakes

Things You’ll Need:
  • Hex wrenches
  • Adjustable wrench
  • Pliers
  • Screwdriver
 
Step 1
Thoroughly clean the bike to remove mud and grime which may be interfering with either operation of the disk or linear-pull Promax brakes.
Step 2
Inspect the linear pull-brake assembly. Look for signs of wear on brake shoes and alignment issues with the calipers.
Step 3
Align brake shoes so that the front of the shoe contacts the bike rim first. Adjust the shoes up or down to ensure contact with the bike rim.
Step 4
Center the calipers so that both pads make contact at the same time to the wheel. Loosen the center attachment bolt of the caliper, center, and tighten.
Step 5
Adjust the brake cable and levers using the barrel adjustment screws. Make sure the cables fully engage the brakes when the levers are pressed.

Promax Disc Brakes

Step 1
Inspect the disc for excessive wear and tear. Look for pitting or other issues which may affect brake operation.
Step 2
Adjust the calipers of disc brakes so that they do not make contact with the spokes as they turn. Loosen the attachment bolts of the caliper reposition and tighten.
Step 3
Adjust the caliper engagement to the disc by first loosening the Promax caliper and then pressing the brake lever. Hold the lever firmly and tighten the calipers securely. Release the brake lever.
Step 4
Inspect hydraulic brake hose looking for signs of leaks. If leaks or cracks are found it will be necessary to replace the hose. Refer the bike to a certified mechanic
Step 5
Inspect mechanical disc-brake cables. Make sure the cable is fully engaging the disc-brake system. Adjust the length of the cable following Promax recommendations.
 

Tips & Warnings

 
Follow Promax recommendations for adjustments. Make sure all bolts and connections are securely tightened.
 
Test the bike to ensure the brake adjustments corrected any problems.
 
Testing the bike should be done slowly at first. Wear a bike helmet for safety.

Resources

Article Written By Keith Dooley

Keith Dooley has a degree in outdoor education and sports management. He has worked as an assistant athletic director, head coach and assistant coach in various sports including football, softball and golf. Dooley has worked for various websites in the past, contributing instructional articles on a wide variety of topics.

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