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Yamaha MT-09 2021 - Checking the Rear Brake Caliper; Disassembling the Rear Brake Caliper; Removing the Rear Brake Caliper

Yamaha MT-09 2021
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4-45
REAR BRAKE
4. Install:
Rear brake caliper
Brake pad retaining bolt
Screw plug
5. Check:
Brake fluid level
Below the minimum level mark Add the
specified brake fluid to the proper level.
Refer to “CHECKING THE BRAKE FLUID
LEVEL” on page 3-13.
6. Check:
Brake pedal operation
Soft or spongy feeling Bleed the brake sys-
tem.
Refer to “BLEEDING THE HYDRAULIC
BRAKE SYSTEM (ABS)” on page 3-15.
EAS30186
REMOVING THE REAR BRAKE CALIPER
TIP
Before disassembling the brake caliper, drain
the brake fluid from the entire brake system.
1. Remove:
Brake hose union bolt
Brake hose gasket
Brake hose
TIP
Put the end of the brake hose into a container
and pump out the brake fluid carefully.
EAS30187
DISASSEMBLING THE REAR BRAKE
CALIPER
1. Remove:
Brake caliper piston
Brake caliper piston dust seal
Brake caliper piston seal
a. Blow compressed air into the brake hose
joint opening “a” to force out the piston from
the brake caliper.
WARNING
EWA13550
Cover the brake caliper piston with a rag.
Be careful not to get injured when the pis-
ton is expelled from the brake caliper.
Never try to pry out the brake caliper pis-
ton.
b. Remove the brake caliper piston dust seal
and brake caliper piston seal.
EAS30188
CHECKING THE REAR BRAKE CALIPER
1. Check:
Brake caliper piston
Rust/scratches/wear Replace the brake
caliper piston.
Brake caliper cylinder
Scratches/wear Replace the brake caliper
assembly.
Brake caliper body
Cracks/damage Replace the brake caliper
assembly.
Brake fluid delivery passages
(brake caliper body)
Obstruction Blow out with compressed air.
WARNING
EWA13601
Whenever a brake caliper is disassembled,
replace the brake caliper piston dust seal
and brake caliper piston seal.
Rear brake caliper bolt (front)
27 N·m (2.7 kgf·m, 20 lb·ft)
Rear brake caliper bolt (rear)
22 N·m (2.2 kgf·m, 16 lb·ft)
LOCTITE®
Rear brake pad retaining bolt
17 N·m (1.7 kgf·m, 13 lb·ft)
Rear brake caliper screw plug
2.5 N·m (0.25 kgf·m, 1.8 lb·ft)
T
R
.
.
Recommended brake component
replacement schedule
Brake pads If necessary
Piston seal Every two years
Piston dust seal Every two years
Brake hoses Every four years
Brake fluid Every two years and
whenever the brake is
disassembled
a

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