Checking The Front Brake Master Cylinder; Assembling The Front Brake Master Cylinder; Installing The Front Brake Master Cylinder - Yamaha R1 Series 2015 Service Manual

a
7. Check:
• Brake lever operation
Soft or spongy feeling
tem.
Refer to "BLEEDING THE HYDRAULIC
BRAKE SYSTEM (ABS)" on page 3-16.
EAS30179
REMOVING THE FRONT BRAKE MASTER
CYLINDER
TIP
Before removing the front brake master cylinder,
drain the brake fluid from the entire brake sys-
tem.
1. Disconnect:
• Brake light switch connectors
(from the front brake light switch)
2. Remove:
• Brake hose union bolt "1"
• Brake hose gaskets "2"
• Brake hose "3"
TIP
To collect any remaining brake fluid, place a
container under the master cylinder and the end
of the brake hose.
2
EAS30725
CHECKING THE FRONT BRAKE MASTER
CYLINDER
1. Check:
• Brake master cylinder
Damage/scratches/wear
• Brake fluid delivery passages
Bleed the brake sys-
1
3
Replace.
4-53
(brake master cylinder body)
Obstruction Blow out with compressed air.
2. Check:
• Brake master cylinder kit
Damage/scratches/wear
3. Check:
• Brake fluid reservoir "1"
• Brake fluid reservoir diaphragm holder "2"
Cracks/damage
• Brake fluid reservoir diaphragm "3"
Damage/wear Replace.
4. Check:
• Brake hoses
Cracks/damage/wear
EAS30181
ASSEMBLING THE FRONT BRAKE MASTER
CYLINDER
EWA13520
WARNING
• Before installation, all internal brake com-
ponents should be cleaned and lubricated
with clean or new brake fluid.
• Never use solvents on internal brake com-
ponents.
Specified brake fluid
DOT 4
EAS30182
INSTALLING THE FRONT BRAKE MASTER
CYLINDER
1. Install:
• Front brake master cylinder
• Front brake master cylinder holder
Front brake master cylinder hold-
er bolt
16 Nm (1.6 m·kgf, 12 ft·lbf)
TIP
• Install the front brake master cylinder holder
with the "UP" mark "a" facing up.
• Align the end of the front brake master cylinder
FRONT BRAKE
Replace.
Replace.
2
3
1
Replace.