Warning: Before starting work, ensure the motorcycle is stabilised and adequately supported. This will help prevent it from falling and causing injury to the operator or damage to the motorcycle.
1. Note the original setting of the brake lever adjuster in order that it can be returned to the same position when the bleeding operation is complete. Set the brake lever adjuster to position No.1.
1. Adjuster wheel; 2. Triangular mark
2. Turn the handlebars to bring the fluid reservoir to a level position.
Warning: Ensure absolute cleanliness when adding brake fluid to the brake fluid reservoir. Do not allow moisture or debris to enter the cylinder, as this will adversely affect the fluid properties. Always use fluid from a sealed container and do not use fluid from a container that has been opened for any period of time. Always check for fluid leakage around hydraulic fittings and for damage to hoses. A dangerous riding condition leading to loss of motorcycle control and an accident could result if this warning is ignored.
Caution: To prevent paint damage, do not spill brake fluid onto any area of the bodywork. Spilled brake fluid will damage paintwork.
3. Release the cap screws and detach the cover noting the position of the sealing diaphragm.
4. Check the condition of the sealing diaphragm for the reservoir. Replace if necessary.
5. Remove the rubber cap from the bleed nipple on the right hand caliper.
6. Attach a transparent tube to the bleed nipple and place the other end of the tube in a suitable receptacle containing new brake fluid. Keep the tube end below the level of fluid.
1. Bleed nipple; 2. Bleed tube; 3. Container
7. Release the bleed nipple.
Note: During bleeding, do not allow the fluid level to fall below the lower level mark in the reservoir. If the fluid level is allowed to fall below this mark, air may enter the system and the sequence of bleeding must be repeated.
8. Get an assistant to slowly pull the brake lever to the handlebar.
9. With the lever held fully against the handlebar, close the bleed nipple. Once the bleed nipple is closed, release the brake lever.
10. Repeat steps 10 and 11 until no more air appears in the bleed tube.
11. When all air has been expelled from the system, hold the lever fully against the handlebar and close the bleed nipple.
Note: Maintain the brake fluid level between the upper and lower reservoir levels whilst bleeding is being carried out.
12. Tighten the bleed nipple to 6 Nm.
13. Remove the bleed tube.
14. Replace the bleed nipple cap.
15. Fill the reservoir to the upper level with new DOT 4 fluid.
Warning: Use only DOT 4 specification brake fluid as listed in the general information section of this manual. The use of brake fluids other than those DOT 4 fluids listed in the general information section may reduce the efficiency of the braking system leading to loss of motorcycle control and an accident. Observe the brake fluid handling warnings given earlier ih this section of the manual.
Caution: To prevent paint damage, do not spill brake fluid onto any area of the bodywork. Spilled brake fluid will damage paintwork.
16. Repeat the bleed procedure for the left hand caliper.
17. When both calipers have been bled, ensure the brake lever operation has a firm resistive feel to it, does not feel spongy and that the lever cannot be pulled directly back to the handlebar. Take remedial action as necessary.
18. Refit the diaphragm and reservoir cover. Refit the screws and tighten to 1.5 Nm.
Warning: Always return the lever adjuster to the original setting as noted in paragraph 1. Operating the motorcycle with lever settings that are unfamiliar may lead to loss of control or an accident.
19. Reset the brake lever adjuster to the original setting.
20. Check the operation of the front brake. Rectify as necessary.
Warning: lt is dangerous to operate the motorcycle with defective brakes; you must have your authorised Triumph dealer take remedial action before you attempt to ride the motorcycle again. Failure to take remedial action may reduce braking efficiency leading to loss of motorcycle control and an accident.