Difficulty
Moderate
Steps
12
Time Required
1 hour
Sections
1
- Front Brake Master Cylinder
- 12 steps
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Introduction
You’ll need a bit of patience, as this repair can take some time. Be patient and follow the steps carefully.
Before beginning, make sure your bike is off and fully cool, then throw on a pair of nitrile gloves.
What you need
Step 1
Front Brake Master Cylinder
- Turn the bike off and allow it to fully cool. Put nitrile gloves on before beginning.
- Use a 3/32 inch Allen key to remove the bolt securing the brake lever.
Turn the bike off and allow it to fully cool. Put nitrile gloves on before beginning.
Use a 3/32 inch Allen key to remove the bolt securing the brake lever.
1024
Step 2
- Place a rag directly under the hose connection to catch any break fluid spills.
- Use pliers to remove the clamp at the end of the reservoir hose.
- Empty the brake fluid into an empty container.
Place a rag directly under the hose connection to catch any break fluid spills.
Use pliers to remove the clamp at the end of the reservoir hose.
Empty the brake fluid into an empty container.
Step 3
- Use an 8 mm socket attached to a 3/8 inch ratchet to remove the two bolts.
Use an 8 mm socket attached to a 3/8 inch ratchet to remove the two bolts.
Step 4
- Grip the boot with your pliers and pull it out of its housing.
- Use snap ring pliers to remove the snap ring behind the boot.
Grip the boot with your pliers and pull it out of its housing.
Use snap ring pliers to remove the snap ring behind the boot.
Step 5
- Use pliers to pull out the spring and piston assembly.
Use pliers to pull out the spring and piston assembly.
Step 6
- Check the condition of the master cylinder, and clean the cylinder with brake cleaner. Dry it with a rag.
- If your master cylinder is corroded or in poor shape, you will need to buy a new or used master cylinder assembly and replace it.
Check the condition of the master cylinder, and clean the cylinder with brake cleaner. Dry it with a rag.
If your master cylinder is corroded or in poor shape, you will need to buy a new or used master cylinder assembly and replace it.
Step 7
- Fit the new seals onto the piston.
- Use a bit of new brake fluid as lubrication.
Fit the new seals onto the piston.
Use a bit of new brake fluid as lubrication.
Step 8
- Place the new spring and piston back into the cylinder.
Place the new spring and piston back into the cylinder.
Step 9
- While holding the piston and spring down, use snap ring pliers to place the snap ring in the same orientation that it was taken out.
- Use pliers to push the assembly together.
While holding the piston and spring down, use snap ring pliers to place the snap ring in the same orientation that it was taken out.
Use pliers to push the assembly together.
Step 10
- Replace the rubber boot.
Replace the rubber boot.
Step 11
- Use an 8 mm socket attached to a 3/8 inch ratchet to secure the two bolts.
- Use pliers to pinch the clamp until it is in the right position like the photo.
- Replace your brake lever, then tighten the single bolt using a 3/32 inch Allen key.
Use an 8 mm socket attached to a 3/8 inch ratchet to secure the two bolts.
Use pliers to pinch the clamp until it is in the right position like the photo.
Replace your brake lever, then tighten the single bolt using a 3/32 inch Allen key.
Step 12
- Remember to bleed the system while adding new fluid!
- Refill the brake fluid reservoir to the appropriate level with new brake fluid.
- Perform a quick test by pulling the brake lever and check that the front brake is functioning properly.
- Congratulations! You are all done and ready to ride!
Remember to bleed the system while adding new fluid!
Refill the brake fluid reservoir to the appropriate level with new brake fluid.
Perform a quick test by pulling the brake lever and check that the front brake is functioning properly.
Congratulations! You are all done and ready to ride!
Your front brake is now working as intended!
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Author
with 1 other contributor
prabhmeet sidhu
Member since: 01/17/2022
205 Reputation
1 Guide authored
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Team
York University, Team P-28, O'Regan Winter 2022
Member of York University, Team P-28, O'Regan Winter 2022
YORK-O'REGAN-W22SPG28
1 Member
1 Guide authored
