Great Wall Florid. Manual — part 30

GWFLORID Maintenance Manual

118

Front Brake Caliper

Components

Disposable parts

Inner and outer brake pad assembly re-
placement

Remark: When applying the brake while driving, if the front

tires makes a continuous screeching sound, inspect the inner

and outer brake pad and friction limit alarm plate. If there

are traces of rubbing from the brake disc on the alarm plate,

the inner and outer brake pad assembly should be replaced.

1. Remove the front wheel.

2. Inspect the inner and outer brake pad's friction material

thickness.

By looking through the caliper's observation ports, inspect

the inner and outer brake pad friction material thickness. If it

is no longer within the specified range, it should be replaced.

Minimum thickness: 2.0 mm

Bleed screw cap

Air bleed

screw

Caliper

Rectangular sealing ring

Piston

Piston dust cover

Inner muffler plate subassembly

Alarm plate

Inner brake pad assembly

Outer brake pad assembly

Outer muffler plate subassembly

Guide pin

Guide pin dust cover

Caliper frame

Brake block yoke

spring plate

Brake block yoke spring plate

30 ± 5

: Specified torque

N·m

10 ± 2

Q1840820

Rubber grease

119

Brake System

3. Remove the caliper assembly.

(a) Remove the hexagon bolt for flange face connecting

the caliper and caliper frame's lower end.

(b) Lift the caliper assembly and use a rope to hang it up to

protect the brake pipeline.

Remark: Do not unscrew the brake pipeline and bleed screw.

4. Remove the following parts.

(a) The group of inner and outer shims B.

(b) The group of inner and outer shims A.

(c) The group of inner and outer brake discs.

(d) One pair of yoke springs.

5. Measure the brake disc thickness.

(See steering knuckle and hub brake assembly examination and

disassembly step 4).

6. Measure the brake disc radial runout.

(See steering knuckle and hub brake assembly examination and

disassembly step 3).

7. Install the yoke spring.

Install the brake block yoke spring plate to the caliper frame.

Outer shim B

Outer shim A

Inner brake disc

Warning device

Inner shim B

Inner shim A

Outer brake disc

Yoke spring

GWFLORID Maintenance Manual

120

8. Install a new inner and outer brake pad assembly and

inner and outer muffler plate subassembly.

(a) Install inner shim A and B onto the inner brake disc.

(b) Install outer shim A and B onto the outer brake disc.

(c) Install the inner and outer brake pad assembly with

inner muffler plate subassembly onto the caliper frame.

Make the inner brake pad assembly with inner muffler

plate subassembly and alarm plate rest close to the

brake caliper's inner side.

Caution: For the inner and outer brake pad assembly,

the working surface of the brake disc must not have

any grease, oil or paint pollution.

(d) Siphon a small amount of brake fluid from the

reservoir. (Make sure not to let the brake fluid overflow

from the reservoir).

(e) Press in the piston with SST.

9. Install the caliper assembly.

Loosen the rope, remove the caliper assembly, and tighten

the hexagon bolt for flange face.

Tightening torque: 30±5 N·m

Remark: Replace one wheel's brake pad at a time, in order to

avoid the other wheel's piston from springing out.

10. Install the front wheel.

Tightening torque for the wheel retaining nut: 100±5 N·m

Front brake caliper piston removal

1. Remove the brake line.

Remove the brake line, and use a clean container to hold the

brake fluid.

SST

Outer shim B

Outer shim A

Inner brake disc

Warning device

Inner shim B

Inner shim A

Outer brake disc

Inner muffler

plate subassembly

Alarm plate

Inner brake pad assembly

Outer brake pad

assembly

Outer muffler plate subassembly

121

Brake System

2. Remove the caliper assembly.

(a) Remove the two hexagon bolts for flange face connecting

the caliper and caliper frame.

(b) Remove the caliper assembly from the caliper frame.

3. Remove the following parts.

(a) The group of inner and outer shims B.

(b) The group of inner and outer shims A.

(c) The group of inner and outer brake discs.

(d) One pair of yoke springs.

4. Remove the piston and piston dust cover from the

caliper.

(a) Place a block in the middle of the caliper.

(b) Use an airgun or air pipe to align the brake pipeline

holes. Remove the piston from the caliper, and at the

same time remove the piston dust cover.

(c) Use a clean rag or other soft cloth to extract the piston.

Warning: When using compressed air, be sure not to

place fingers in front of the piston.

5. Remove the rectangular sealing ring from the caliper.

Use a paperclip to remove the rectangular sealing ring from

the caliper.

Caution: The tools being used should not be sharp, in

order to avoid tearing the rectangular sealing ring.

Inner and outer brake pad assembly exami-
nation

Measure the inner and outer brake pad assembly's thickness.

Standard thickness: 8.5 mm

Minimum thickness: 2.0 mm

If it is smaller than the minimum level of thickness or there

are traces of uneven wear and tear, the brake pad should be

replaced.