Yamaha XV19SX(C), Service Manual

Page: 208 / 494

REAR BRAKE
4-55
b. Remove the brake caliper piston seal and
dust seal.
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EAS22640
CHECKING THE REAR BRAKE CALIPER
1. Check:
• Brake caliper piston “1”
Rust/scratches/wear
→
Replace the brake
caliper piston.
• Brake caliper cylinder “2”
Scratches/wear
→
Replace the brake caliper
assembly.
• Brake caliper body “3”
Cracks/damage
→
Replace the brake caliper
assembly.
• Brake fluid delivery passages
(brake caliper body)
Obstruction
→
Blow out with compressed air.
WARNING
EWA1D77005
Whenever a brake caliper is disassembled,
replace the brake caliper piston seal and
dust seal.
EAS22650
ASSEMBLING THE REAR BRAKE CALIPER
WARNING
EWA1D77006
• 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 piston seal
and dust seal to swell and distort.
• Whenever a brake caliper is disassembled,
replace the brake caliper piston seal and
dust seal.
EAS22670
INSTALLING THE REAR BRAKE CALIPER
1. Install:
• Rear brake caliper “1”
(temporarily)
• Copper washers
• Rear brake hose “2”
• Rear brake hose union bolt “3”
WARNING
EWA1D77008
Proper brake hose routing is essential to in-
sure safe vehicle operation. Refer to “CABLE
ROUTING (for XV19S(C)/ XV19M(C)/
XV19CTS(C)/ XV19CTM(C))” on page 2-51
and “CABLE ROUTING (for XV19CS(C)/
XV19C(C))” on page 2-67.
CAUTION:
ECA14170
When installing the brake hose onto the
brake caliper “1”, make sure the brake pipe
“a” touches the projection “b” on the brake
caliper.
Recommended brake component replace-
ment schedule
Brake pads If necessary
Piston seal Every two years
Dust seal Every two years
Brake hoses Every four years
Brake fluid
Every two years and
whenever the brake
is disassembled
a
Recommended fluid
DOT 4
T
R
.
.
Rear brake hose union bolt
30 Nm (3.0 m·kg, 22 ft·lb)
3
1
2
New