Yamaha YZ450F(Y), Owner'S Manual

Page: 143 / 190

5-12
FRONT BRAKE AND REAR BRAKE
INSTALLING THE REAR BRAKE
CALIPER
1. Install: • Pad support "1"
• Brake pad "2"
• Pad pin "3"
• Install the brake pads with their pro-
jections "a" into the brake caliper re-
cesses "b".
• Temporarily tighten the pad pin at
this point.
2. Install: • Brake disc cover "1"
• Bolt (brake disc cover) "2"
3. Install:
• Brake caliper "1"
• Rear wheel "2"
Refer to "FRONT WHEEL AND
REAR WHEEL" section.
4. Tighten: • Pad pin "3"
5. Install:
• Pad pin plug "4"
INSTALLING THE BRAKE
MASTER CYLINDER KIT
1. Clean: • Brake master cylinder
• Brake master cylinder kit
Clean them with brake fluid. 2. Install:
• Brake master cylinder cup (prima-
ry) "1" • Brake master cylinder cup (sec-
ondary) "2"
To brake master cylinder piston
"3".
Apply the brake fluid on the brake
master cylinder cup.
After installing, cylinder cup
should be installed as shown di-
rection. Wrong installation cause
improper brake performance.
3. Install: • Spring "1"
To brake master cylinder piston
"2".
Install the spring at the smaller dia.
side.
4. Install: • Brake master cylinder kit "1"
• Washer (front brake) "2"
• Push rod (rear brake) "2"
• Circlip "3"
• Brake master cylinder boot "4"
• Push rod (front brake) "5"
To brake master cylinder.
• Apply the brake fluid on the brake
master cylinder kit. • Apply the silicone grease on the tip
of the push rod.
• When installing the circlip, use a long nose circlip pliers.
A. Front
B. Rear
INSTALLING THE FRONT BRAKE
MASTER CYLINDER
1. Install: • Brake master cylinder "1"
• Brake master cylinder bracket "2"
• Bolt (brake master cylinder brack-
et) "3"
• Install the bracket so that the arrow mark "a" face upward.
• First tighten the bolts on the upper
side of the brake master cylinder
bracket, and then tighten the bolts
on the lower side.
Bolt (brake disc cover):
10 Nm (1.0 m•kg, 7.2
ft•lb)
Pad pin:
18 Nm (1.8 m•kg, 13
ft•lb)
Pad pin plug:
3 Nm (0.3 m•kg, 2.2
ft•lb)
Bolt (brake master cylin-
der bracket):
9 Nm (0.9 m•kg, 6.5
ft•lb)