Installing The Front Brake Caliper - Yamaha YZF-R125 Service Manual

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• Whenever a brake caliper is disassembled,
replace the brake caliper dust seals and
piston seals.
Recommended fluid
DOT 4
EAS22420

INSTALLING THE FRONT BRAKE CALIPER

1. Install:
• Brake caliper "1"
(temporarily)
• Copper washers "2"
• Brake hose "3"
• Brake hose union bolt "4"
Brake hose union bolt
30 Nm (3.0 m·kg, 22 ft·lb)
EWA13530
WARNING
Proper brake hose routing is essential to in-
sure safe vehicle operation. Refer to "CABLE
ROUTING" on page 2-33.
ECA5D71029
CAUTION:
• Install the brake hose at a 17° angle to the
front brake caliper as shown in the illustra-
tion.
• While holding the brake hose, tighten the
union bolt.
4
1
2. Remove:
• Brake caliper
3. Install:
• Brake pad spring
• Brake pads
• Brake caliper
• Brake hose holder
New
17
3
2 New
Front brake caliper bolt
30 Nm (3.0 m·kg, 22 ft·lb)
LOCTITE®
Front brake hose holder
7 Nm (0.7 m·kg, 5.1 ft·lb)
Refer to "REPLACING THE FRONT BRAKE
PADS" on page 4-22.
4. Fill:
• Brake master cylinder reservoir
(with the specified amount of the recom-
mended brake fluid)
Recommended fluid
DOT 4
EWA5D71020
WARNING
• Use only the designated brake fluid. Other
brake fluids may cause the rubber seals to
deteriorate, causing leakage and poor
brake performance.
• Refill with the same type of brake fluid that
is already in the system. Mixing brake fluids
may result in a harmful chemical reaction,
leading to poor brake performance.
• When refilling, be careful that water does
not enter the brake master cylinder reser-
voir. Water will significantly lower the boil-
ing point of the brake fluid and could cause
vapor lock.
ECA13540
CAUTION:
Brake fluid may damage painted surfaces
and plastic parts. Therefore, always clean up
any spilt brake fluid immediately.
5. Bleed:
• Brake system
Refer to "BLEEDING THE HYDRAULIC
BRAKE SYSTEM" on page 3-20.
6. Check:
• Brake fluid level
Below the minimum level mark "a" → Add the
recommended brake fluid to the proper level.
Refer to "CHECKING THE BRAKE FLUID
LEVEL" on page 3-18.
4-24
FRONT BRAKE