Yamaha RAPTOR YFM125RA User Manual

REAR BRAKE
4-37
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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.
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EAS22642
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 cal-
iper 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
EWA13611
Whenever a brake caliper is disassembled,
replace the brake caliper piston dust seal
and brake caliper piston seal.
2. Check:
• Brake caliper bracket “1”
Cracks/damage → Replace the brake
caliper assembly.
EAS22661
ASSEMBLING THE REAR BRAKE CALIPER
WARNING
EWA13621
• Before installation, all internal brake com-
ponents should be cleaned and lubricated
with clean or new brake fluid.
• Never use solvents on internal brake
components as they will cause the brake
caliper piston dust seal and brake caliper
piston seal to swell and distort.
• Whenever a brake caliper is disassem-
bled, replace the brake caliper piston dust
seal and brake caliper piston seal.
Recommended brake component replace-
ment schedule
Brake pads If necessary
Piston seals Every two years
Piston dust seals Every two years
Brake hoses Every four years
Brake fluid
Every two years and
whenever the brake is
disassembled

Yamaha RAPTOR YFM125RA Specifications

General

Brand	Yamaha
Model	RAPTOR YFM125RA
Category	Offroad Vehicle
Language	English