Checking The Front Brake Calipers; Assembling The Front Brake Calipers - Yamaha R1 Series 2015 Service Manual

EAS30172
DISASSEMBLING THE FRONT BRAKE
CALIPERS
The following procedure applies to both of the
brake calipers.
1. Remove:
• Brake caliper pistons "1"
• Brake caliper piston dust seals "2"
• Brake caliper piston seals "3"
1
2
3
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a. Secure the right side brake caliper pistons
with a piece of wood "a".
b. Blow compressed air into the brake hose joint
opening "b" to force out the left side pistons
from the brake caliper.
EWA17060
WARNING
• Never try to pry out the brake caliper pis-
tons.
• Do not loosen the bolts "4".
a
c. Remove the brake caliper piston dust seals
and brake caliper piston seals.
d. Repeat the previous steps to force out the
right side pistons from the brake caliper.
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EAS30173

CHECKING THE FRONT BRAKE CALIPERS

The following procedure applies to both of the
brake calipers.
1
2
3
4
b
Recommended brake component
replacement schedule
Brake pads
Piston seals
Piston dust seals
Brake hoses
Brake fluid
1. Check:
• Brake caliper pistons "1"
Rust/scratches/wear
caliper pistons.
• Brake caliper cylinders "2"
Scratches/wear
assembly.
• Brake caliper body "3"
Cracks/damage
assembly.
• Brake fluid delivery passages
(brake caliper body)
Obstruction
EWA13611
WARNING
Whenever a brake caliper is disassembled,
replace the brake caliper piston dust seals
and brake caliper piston seals.
2
1
EAS30174
ASSEMBLING THE FRONT BRAKE
CALIPERS
EWA16560
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 as they will cause the brake caliper
piston dust seals and brake caliper piston
seals to swell and distort.
• Whenever a brake caliper is disassembled,
4-51
FRONT 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.
3
1