Introduction; Checking The Rear Brake Disc; Replacing The Rear Brake Pads - Yamaha MBK X-MAX 300 2017 Service Manual

EAS30183

INTRODUCTION

EWA14101
WARNING
Disc 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 brake
system is disconnected, the entire brake
system 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 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 im-
mediate medical attention.
EAS30184

CHECKING THE REAR BRAKE DISC

1. Remove:
• Rear wheel
Refer to "REAR WHEEL" on page 4-34.
2. Check:
• Brake disc
Damage/galling → Replace.
3. Measure:
• Brake disc runout
Out of specification → Correct the brake disc
runout or replace the brake disc.
Refer to "CHECKING THE FRONT BRAKE
DISC" on page 4-44.
Brake disc runout limit (as mea-
sured on wheel)
0.15 mm (0.0059 in)
4. Measure:
• Brake disc thickness
Measure the brake disc thickness at a few dif-
ferent locations.
Out of specification → Replace.
Refer to "CHECKING THE FRONT BRAKE
DISC" on page 4-44.
Brake disc thickness limit
4.5 mm (0.18 in)
5. Adjust:
• Brake disc runout
Refer to "CHECKING THE FRONT BRAKE
DISC" on page 4-44.
Rear brake disc bolt
23 N·m (2.3 kgf·m, 17 lb·ft)
LOCTITE®
6. Install:
• Rear wheel
Refer to "REAR WHEEL" on page 4-34.
EAS30185

REPLACING THE REAR BRAKE PADS

TIP
When replacing the brake pads, it is not neces-
sary to disconnect the brake hose or disassem-
ble the brake caliper.
1. Measure:
• Brake pad wear limit "a"
Out of specification → Replace the brake
pads as a set.
Brake pad lining thickness
6.7 mm (0.26 in)
Limit
0.8 mm (0.03 in)
A
a
B
A. Inner
B. Outer
4-57
REAR BRAKE
a