Yamaha TMAX 2020 Service Manual

4-58REAR BRAKEEAS30183INTRODUCTIONWARNINGEWA14101Disc brake components rarely require disas-sembly. Therefore, always follow these pre-ventive measures:• Never disassemble brake components un-less absolutely necessary.• If any connection on the hydraulic brakesystem is disconnected, the entire brakesystem must be disassembled, drained,cleaned, properly filled, and bled after reas-sembly.• Never use solvents on internal brake com-ponents.• Use only clean or new brake fluid for clean-ing brake components.• Brake fluid may damage painted surfacesand plastic parts. Therefore, always cleanup any spilt brake fluid immediately.• Avoid brake fluid coming into contact withthe eyes as it can cause serious injury.FIRST AID FOR BRAKE FLUID ENTERINGTHE EYES:• Flush with water for 15 minutes and get im-mediate medical attention.EAS30184CHECKING THE REAR BRAKE DISC1. Remove:• Rear wheelRefer to “REAR WHEEL” on page 4-30.2. Check:• Rear brake discDamage/galling  Replace.3. Measure:• Brake disc runoutOut of specification  Correct the brake discdeflection or replace the brake disc.Refer to “CHECKING THE FRONT BRAKEDISCS” on page 4-43.4. Measure:• Brake disc thicknessMeasure the brake disc thickness at a few dif-ferent locations.Out of specification  Replace.Refer to “CHECKING THE FRONT BRAKEDISCS” on page 4-43.5. Adjust:• Brake disc deflectionRefer to “CHECKING THE FRONT BRAKEDISCS” on page 4-43.6. Install:• Rear wheelRefer to “REAR WHEEL” on page 4-30.EAS30185REPLACING THE REAR BRAKE PADSTIPWhen replacing the brake pads, it is not neces-sary to disconnect the brake hose or disassem-ble the brake caliper.1. Remove:• Rear brake caliper bolt• Rear brake caliper2. Remove:• Rear brake pad• Brake pad support3. Measure:• Brake pad wear limit “a”Out of specification  Replace the brakepads as a set.4. Install:• Brake pad support• Rear brake padTIPAlways install new brake pads, brake pad sup-ports as a set.Brake disc runout limit (as mea-sured on wheel)0.15 mm (0.0059 in)Brake disc thickness limit4.5 mm (0.18 in)Rear brake disc bolt30 N·m (3.0 kgf·m, 22 lb·ft)LOCTITE®Brake pad lining thickness limit0.8 mm (0.03 in)T R..