REAR BRAKE CALIPER. Honda CBR125R

HYDRAULIC BRAKE

INSTALLATION

Install the brake caliper/bracket assembly to the right fork leg.

Install new mounting bolts and tighten them to the specified torque.

TORQUE: 30 N·m (3.1 kgf·m, 22 lbf·ft)

Install the brake hose eyelet between the stoppers with brake hose oil bolt and new sealing washers.

Tighten the brake hose oil bolt to the specified torque.

TORQUE: 34 N·m (3.5 kgf·m, 25 lbf·ft)

Install the brake pads (page 15-8).

Fill the reservoir to the upper level and bleed the

front brake system (page 15-6).

BOLTS STOPPERS

OIL BOLT

SEALING

WASHERS

REAR BRAKE CALIPER

REMOVAL

Drain the brake fluid from the hydraulic system

(page 15-5).

Remove the brake pads (page 15-9).

When removing the oil bolt, cover the end of brake hose to prevent contamination.

Remove the brake hose oil bolt and sealing washers.

Remove the rear wheel (page 14-5).

Remove the brake caliper/bracket assembly from the swingarm.

SEALING

WASHERS

OIL BOLT

DISASSEMBLY

Remove the following:

– Caliper bracket

– Pin boots

– Pad spring

BRAKE HOSE

BRACKET

CALIPER/BRACKET

ASSEMBLY

PAD SPRING

PIN BOOTS

15-23

HYDRAULIC BRAKE

Do not use high pressure air or bring the nozzle too close to the inlet.

Place a shop towel over the piston.

Position the caliper body with the piston facing down and apply small squirts of air pressure to the fluid inlet to remove the piston.

Be careful not to damage the piston sliding surface.

Push the dust and piston seals in and lift them out.

Clean the seal grooves, caliper cylinder and piston with clean brake fluid.

PISTON SEAL DUST SEAL

INSPECTION

Check the caliper cylinder for scoring, scratches or damage.

Measure the caliper cylinder I.D.

SERVICE LIMIT: 32.090 mm (1.2634 in)

Check the caliper piston for scoring, scratches or damage.

Measure the caliper piston O.D.

SERVICE LIMIT: 31.940 mm (1.2575 in)

15-24

HYDRAULIC BRAKE

ASSEMBLY

BOOTS

CALIPER PISTON

DUST SEAL

PISTON SEAL

CALIPER BRACKET

PAD SPRING

CALIPER BODY

5.4 N·m (0.6 kgf·m, 4.0 lbf·ft)

BRAKE PADS

O-RING

Apply brake fluid to new piston seals.

Apply silicone grease to new dust seals.

Install the piston and dust seals into the seal grooves in the caliper body.

Apply brake fluid to the caliper piston sliding area and install them into the caliper cylinder with the opening side toward the pad.

17 N·m (1.7 kgf·m, 13 lbf·ft)

RUBBER PLUG

DUST SEAL

PISTON SEAL

Install the pad spring onto the caliper body.

Apply silicone grease to the brake caliper pin bolt

sliding surface (page 1-17).

Install the caliper bracket to the caliper body.

BRACKET

CALIPER PISTON

PAD SPRING

PIN BOLTS

15-25