Chery QQ6 (S21) / S12LHD. Manual — part 46

10

4.15 Keep the area between dustproof seal and caliper

housing dry. DO NOT contact the brake cylinder paste or

brake fluid in order to ensure the proper position of

dustproof seal.

4.16 Secure the brake piston with the reinforcement parts

which is sold in market, and slightly press it to the

dustproof seal. Apply the compressed air (max. 3.0Bar) to

blow the dustproof seal, and then cover the piston with a

ring.

CAUTION: IMMERSE THE DUSTPROOF SEAL AND

PISTON WITH THE BRAKE FLUID TO MAKE THE

SEAL MORE EASILY THROUGH.

4.17(Brake disc check) Check the thickness of brake disc.

If below the min. thickness, replace it. CAUTION: Replace

two brake discs on the same axle at the same time. Replace

the friction lining at the same time when replacing it with a

new brake disc.

4.18 Check the max brake disc face circular runout with a

dial gauge. If the runout exceeds 0.03 mm, please replace it.

(Also machine the disc to satisfy the max circular runout

under the premise of ensurance of brake disc thickness.)

4.19 Install the other parts according to Removal Step.

11

III. Disassembly, Reassembly and Maintenance of Rear Brake

1. Structural Diagram of System

1. Brake Drum 2. Rear Brake Assy

3. Rear Wheel Hub Bearing Assy 4. Oil Seal

5. End Cover 6. Bolt

7. Rear Wheel Sensor 8. Rear Brake Pipe Retaining Clip

9. Double-Opening Pipeline Clip 10. Tower Bar

11. Rear Shoe Spring Leaf 12. Rear Shoe Spring

Structural Diagram of Rear Brake Assy

(1) Brake Drum (2) Rear Brake Assy

(3) Wheel Hub Bearing Unit (4) Brake Wheel Cylinder

(5) Dust Cover (6) Rear Brake Shoe

2. Preparation

Tools:

ratchet wheel, lug bar, 10#, 19#, 32# sleeve, 10# box wrench,

vice, torque spanner, right-angled screwdriver.

Accessories: brake fluid

3. Precautions

3.1 Please wear necessary labor protection supplies to avoid accidents.

3.2 The brake fluid is noxious. If it contacts your skin or eye(s) by careless, please use a lot of

clean water to wash the skin or eye(s), and go to see a doctor in time, if necessary.

3.3 Waste brake fluid shall be put in vessels. DO NOT pour the fluid into the sewage system or

store the fluid together with the domestic wastes.

4

5

6

Rear Left Brake

12

3.4 DO NOT step on the brake pedal and move the vehicle during the disassembly/reassembly

operation.

3.5 DO NOT make the friction lining or friction disc stained with the oil/fluid which may reduce

the braking effeciency.

4. Removal Step

4.1 Remove the rear wheel (refer to the Removal Step for front wheel).

4.2 Remove two brake drum locating bolts with a cross screwdriver.

4.3 Swing the brake drum, and take off it.

4.4 Observe the structure of rear brake.

4.5 Remove the hand brake control cable with a caliper.

Bolts

Hand

Brake

Control Cable

13

4.6 Remove the upper return spring with a caliper.

4.7 Remove the lower return spring with a caliper.

4.8 Press down the brake shoe locating bar spring leaf by

both hands (with glove) and turn it 90° in clockwise or

anticlockwise direction, and then remove two brake shoe

locating bars.

4.8 Take off two brake shoes.

4.9 Detach the spring and disassemble the brake shoes.

Remove
This Spring