HOME 1.11 BRAKE PADS AND DISCS INSPECTION Brake Pads sm01747 1 Always replace brake pads in complete sets for correct and safe brake operation. Improper brake operation could result in death or serious injury. (00111a) 4 3 Direct contact of D.O.T. 4 brake fluid with eyes can cause irritation. Avoid eye contact. In case of eye contact flush with large amounts of water and get medical attention. Swallowing large amounts of D.O.T. 4 brake fluid can cause digestive discomfort. If swallowed, obtain medical atten- tion. Use in well ventilated area. KEEP OUT OF REACH OF CHILDREN. (00240a) 2 2 5 D.O.T. 4 brake fluid will damage painted and body panel surfaces it comes in contact with.
Always use caution and protect surfaces from spills whenever brake work is per- formed. Failure to comply can result in cosmetic damage. (00239b) 3 4 See Figure 1-34 . Replace brake pads if brake pad friction material on either the front or rear caliper is worn to service limit (wear indicator lines no longer visible). Always replace both pads in a caliper as a set. When checking the brake pads and discs, inspect the brake hoses for correct routing and any signs of damage. Brake Disc Thickness See Figure 1-32 .The minimum brake disc (2) thickness is stamped on the side of the disc. Replace disc if badly scored. 1. Front brake caliper (viewed from below) 2. Brake disc 3. Brake pads 4.
Backing plate 5. Rear brake caliper (viewed from above) Brake Disc Lateral Runout and Warpage Maximum brake disc lateral runout and warpage is 0.2 mm (0.008 in.). Figure 1-32. Brake Pad Areas of Inspection (typical) BRAKE PAD REPLACEMENT Rear Brake Caliper 1. Remove right rear upper shock bolt and pivot shock absorber away to provide necessary clearance for per- forming rear brake service. See 2.37 REAR SHOCK ABSORBERS for proper procedure. 2. Remove rear master cylinder reservoir cap. As pistons are pushed back into the caliper, fluid level may rise more than 12.7 mm (1/2 in.). You may have to remove fluid to allow for this. 3. Gently pry the pads back.
Use steady pressure to prevent scoring the brake disc. Pry between the pad and the brake disc in order to push the caliper pistons back into their bores. 2009 VRSC Service: Maintenance 1-27