Yamaha YFM25RSEY Automobile User Manual


 
REAR BRAKE
4-32
EAS22560
INTRODUCTION
WARNING
EWA14100
Disc brake components rarely require dis-
assembly. Therefore, always follow these
preventive measures:
Never disassemble brake components
unless absolutely necessary.
If any connection on the hydraulic brake
system is disconnected, the entire brake
system must be disassembled, drained,
cleaned, properly filled, and bled after
reassembly.
Never use solvents on internal brake
components.
Use only clean or new brake fluid for
cleaning brake components.
Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean
up any spilt brake fluid immediately.
Avoid brake fluid coming into contact
with the eyes as it can cause serious
injury.
FIRST AID FOR BRAKE FLUID ENTERING
THE EYES:
Flush with water for 15 minutes and get
immediate medical attention.
EAS22570
CHECKING THE REAR BRAKE DISC
1. Remove:
Rear wheel
Refer to “REAR WHEEL” on page 4-9.
2. Check:
•Brake disc
Damage/galling Replace.
3. Measure:
Brake disc deflection
Out of specification Correct the brake
disc deflection or replace the brake disc.
Refer to “CHECKING THE FRONT
BRAKE DISCS” on page 4-20.
4. Measure:
Brake disc thickness
Measure the brake disc thickness at a
few different locations.
Out of specification Replace.
Refer to “CHECKING THE FRONT
BRAKE DISCS” on page 4-20.
5. Adjust:
Brake disc deflection
Refer to “CHECKING THE FRONT
BRAKE DISCS” on page 4-20.
6. Install:
Rear wheel
Refer to “REAR WHEEL” on page 4-9.
EAS22580
REPLACING THE REAR BRAKE PADS
TIP
When replacing the brake pads, it is not neces-
sary to disconnect the brake hose or disas-
semble the brake caliper.
1. Measure:
Brake pad wear limit “a”
Out of specification Replace the brake
pads as a set.
2. Install:
Brake pads
Brake pad spring
TIP
Always install new brake pads and a brake pad
spring as a set.
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a. Connect a clear plastic hose “1” tightly to
the bleed screw “2”. Put the other end of
the hose into an open container.
Brake disc deflection limit
0.15 mm (0.006 in)
Brake disc thickness limit
3.5 mm (0.14 in)
Brake disc bolt
28 Nm (2.8 m·kg, 21 ft·lb)
LOCTITE®
Brake pad lining thickness
(inner)
4.2 mm (0.17 in)
Limit
1.0 mm (0.04 in)
Brake pad lining thickness
(outer)
4.2 mm (0.17 in)
Limit
1.0 mm (0.04 in)