Yamaha YZ450F 2021 - Assembling the Front Brake Caliper; Installing the Front Brake Caliper

FRONT BRAKE
4-20
• Brake fluid delivery passages
(brake caliper body)
Obstruction  Blow out with compressed air.
WARNING
EWA19220
When the brake caliper is disassembled, re-
place the brake caliper piston seal and the
brake caliper piston dust seal with new ones.
2. Check:
• Brake caliper bracket
Crack/damage  Replace.
EAM30033
ASSEMBLING THE FRONT BRAKE CALIPER
WARNING
EWA19230
• Before installation, clean and lubricate the
internal parts. Use new brake fluid for
cleaning and lubricating.
• Never use solvents on internal brake com-
ponents as they will cause the piston seals
to swell and distort.
• When the brake caliper is disassembled, re-
place the brake caliper piston seal and the
brake caliper piston dust seal with new
ones.
EAM30035
INSTALLING THE FRONT BRAKE CALIPER
1. Install:
• Front brake caliper bracket
• Front brake caliper
(temporarily)
• Copper washer
• Brake hose
• Union bolt
WARNING
EWA13531
Proper brake hose routing is essential to in-
sure safe vehicle operation.
NOTICE
ECA24460
Make sure that the pipe portion “a” of the
brake hose touches the projection “b” on the
brake caliper.
2. Install:
• Front brake caliper
• Brake pad spring
• Brake pad
• Brake pad pin
• Brake hose holder
Refer to “CHECKING THE FRONT BRAKE
PADS” on page 3-24.
3. Tighten:
• Brake hose holder bolt “1”
TIP
Make sure that the brake hose holder “2” is in-
stalled with its upper end “a” aligned with the
paint “b” on the brake hose.
4. Pour brake fluid to the brake master cylinder
Specified brake fluid
DOT 4
Front brake caliper bracket
28 N·m (2.8 kgf·m, 21 lb·ft)
Brake hose union bolt
30 N·m (3.0 kgf·m, 22 lb·ft)
2
11
3
New
T
R
.
.
Brake pad pin
17 N·m (1.7 kgf·m, 13 lb·ft)
Brake hose holder bolt
9 N·m (0.9 kgf·m, 6.6 lb·ft)
a
a
a
b
T
R
.
.
T
R
.
.
2
1
b
a