Yamaha ROADLINER XV19SW, Service Manual

Page: 165 / 444

FRONT BRAKE
4-39
b. Remove the brake caliper piston seals.
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EAS22390
CHECKING THE FRONT BRAKE CALIPERS
1. Check:
• Brake caliper pistons “1”
Rust/scratches/wear
→
Replace the brake
caliper pistons.
• Brake caliper cylinders “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
EWA13600
Whenever a brake caliper is disassembled,
replace the piston seals.
EAS22410
ASSEMBLING THE FRONT BRAKE
CALIPERS
WARNING
EWA13620
• 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 seals
to swell and distort.
• Whenever a brake caliper is disassembled,
replace the brake caliper piston seals.
EAS22440
INSTALLING THE FRONT BRAKE CALIPERS
The following procedure applies to both of the
brake calipers.
1. Install:
• Front brake caliper “1”
(temporarily)
• Copper washers
• Front brake hose “2”
• Front brake hose union bolt “3”
WARNING
EWA13530
Proper brake hose routing is essential to in-
sure safe vehicle operation. Refer to “CABLE
ROUTING” on page 2-45.
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 seals Every two years
Brake hoses Every four years
Brake fluid
Every two years and
whenever the brake
is disassembled
a
2
1
1
3
Recommended fluid
DOT 4
T
R
.
Front brake hose union bolt
32 Nm (3.2 m·kg, 23 ft·lb)
New
1
a
b
2
3