Checking The Rear Brake Caliper - Yamaha R1 Series 2015 Service Manual

the brake fluid from the entire brake system.
1. Remove:
• Brake hose union bolt "1"
• Brake hose gaskets "2"
• Brake hose "3"
TIP
Put the end of the brake hose into a container
and pump out the brake fluid carefully.
2
EAS30187
DISASSEMBLING THE REAR BRAKE
CALIPER
1. Remove:
• Brake caliper piston "1"
• Brake caliper piston dust seal "2"
• Brake caliper piston seal "3"
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a. Blow compressed air into the brake hose joint
opening "a" to force out the piston from the
brake caliper.
EWA13550
WARNING
• 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.
1
3
1
2
3
a
b. Remove the brake caliper piston dust seal
and brake caliper piston seal.
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EAS30188

CHECKING THE REAR BRAKE CALIPER

Recommended brake component
replacement schedule
Brake pads
Piston seal
Piston dust seal
Brake hoses
Brake fluid
1. Check:
• Brake caliper piston "1"
Rust/scratches/wear
caliper piston.
• Brake caliper cylinder "2"
Scratches/wear
assembly.
• Brake caliper body "3"
Cracks/damage
assembly.
• Brake fluid delivery passages
(brake caliper body)
Obstruction
EWA13601
WARNING
Whenever a brake caliper is disassembled,
replace the brake caliper piston dust seal
and brake caliper piston seal.
4-61
REAR BRAKE
If necessary
Every two years
Every two years
Every four years
Every two years and
whenever the brake is
disassembled
Replace the brake
Replace the brake caliper
Replace the brake caliper
Blow out with compressed air.