Disassembling The Rear Brake Caliper; Checking The Rear Brake Caliper; Assembling The Rear Brake Caliper - Yamaha MBK MW125 2014 Service Manual

3
EAS30187
DISASSEMBLING THE REAR BRAKE
CALIPER
1. Remove:
• Brake caliper piston "1"
• Brake caliper piston dust seal "2"
• Brake caliper piston seal "3"
1
2
▼ ▼▼▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼
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.
a
b. Remove the brake caliper piston dust seal
and brake caliper piston seal.
▲ ▲▲▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲
2
1
3
▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼
▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲
EAS30188

CHECKING THE REAR BRAKE CALIPER

Recommended brake component replacement
Brake pads
Piston seal
Piston dust seal
Brake hose
Brake fluid
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.
EWA17070
WARNING
▼▼▼
Whenever a brake caliper is disassembled,
replace the brake caliper piston dust seal
and brake caliper piston seal.
1
2. Check:
• Brake caliper bracket
Cracks/damage → Replace.
EAS30189

ASSEMBLING THE REAR BRAKE CALIPER

EWA17080
WARNING
• Before installation, all internal brake com-
ponents should be cleaned and lubricated
with clean or new brake fluid.
▲▲▲
4-55
REAR BRAKE
schedule
If necessary
Every two years
Every two years
Every four years
Every two years and
whenever the brake is
disassembled
3
2