DIY BRAKE BLEEDING - MADE EASY!
SRAM Road Rim Brake Bleed Procedure - How-to Video
SRAM TECH
Transcript
Welcome to SRAM Technical Communication.
This video will show you how to properly bleed your SRAM Hydraulic Road Rim brakes.
Tools and Supplies
You will need the following tools and supplies:
Safety glasses, nitrile gloves, Avid bleed kit or Avid professional bleed kit, bleed block, T10 Torx wrench, 4mm hex wrench, torque wrench with 4mm hex bit socket, T10 Torx bit socket, clean lint-free rags, Isopropyl alcohol.
Preparing the Syringes
Fill a syringe one half full of high performance DOT fluid, and the other syringe one quarter full.
Tap the side of the syringe to bring any air bubbles to the top. Place a towel around the tip and slowly push the air bubbles out of the syringe.
Close the hose clamp and pull on the plunger. Bubbles will appear to form and enlarge, continue to pull on the plunger and tap the syringe to release the bubbles from the sides and the bottom.
Release the plunger, open the clamp and carefully push the air out. Repeat this process 2-3 times for each syringe.
Parts Preparation
Rotate the quick release lever to the open position. Remove the wheel from the bike. Rotate the quick release lever to the closed position. Turn the barrel adjuster clockwise until it stops. Remove the brake pads from the calliper.
Remove the calliper bleed port screw. Thread the half-full syringe into the calliper bleed port.
Pull the lever hood back to expose the bleed port. Remove the lever bleed port screw. Thread the other syringe into the lever bleed port. Wipe off any brake fluid that may drip from the bleed port.
Bleed Procedure
Push on the calliper syringe plunger to move fluid into the lever syringe until it is half full. You should also see air bubbles fill the lever syringe. Close the clamp on the lever syringe.
If the fluid in the lever syringe is severley discoloured replace the fluid in the lever syringe before continuing.
Hold the brake lever to the handlebar and fasten it with a toe strap or rubber bands. Pull out on the calliper syringe plunger then gently push in on the plunger to pressurise the system. Repeat this procedure several times until the large bubbles stop coming out of the calliper.
Be careful not to pull too hard on the plunger or you will pull air past the plunger seal.
Remove the toe strap or rubber bands from the brake lever but keep the lever pulled in with your hand. Apply pressure to the calliper syringe plunger and slowly let the brake lever extend.
Close the clamp on the calliper syringe then remove the syringe from the calliper and reinstall the bleed port screw.
Wipe off any brake fluid from the calliper.
Open the clamp on the lever syringe. Pull out on the lever syringe plunger. Then gently push in on the plunger to pressurise the system.
Use gentle pressure. Applying too much pressure to the plunger can damage the system!
Squeeze and release the brake lever 10 times allowing the lever to snap back to its starting position. Repeat this procedure several times until large bubbles stop coming out of the lever.
Apply a small amount of pressure to the syringe plunger.
Failure to pressurise the system at this step will allow air to enter the system.
Remove the syringe. Reinstall the bleed screw into the pool of fluid in the bleed port.
Use isopropyl alcohol and a clean rag to remove any brake fluid from the lever and calliper. Make sure to clean around the lever bleed port screw.
Reinstall the brake pads. Turn the quick release lever to the open position. Rotate the barrel adjuster counter-clockwise to open.
Reinstall the wheel. Turn the quick release lever to the closed position.
For proper brake pad adjustment please consult the user manual.
Pull on the lever very firmly several times. Inspect the lever and calliper for any leaks.
Dispose of DOT fluid in accordance to local and federal regulations.
This concludes the bleed procedure for the SRAM hydraulic road rim brakes. Thanks for watching.