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Remove 2 boots from the brake cylinder support bracket.

7. Remove the brake cylinder guide boot

Remove the clip and boot with screwdriver.

8. Remove the bleeder screw

9. Remove the front brake piston

(1) Put a piece of soft cloth between the brake cylinder and piston.

(2) Blow the piston out from the brake cylinder with the compressed air

Notice: Be careful not to put your finger in front of the piston when blowing 
the compressed air. Be careful of the splashed brake fluid

10. Remove the piston oil seal

Remove the oil seal from the brake cylinder with a screwdriver

11.Check the brake cylinder and piston

Check the cylinder wall and piston for rust and damage

12. Check the thickness of the brake pad

Measure the thickness with a ruler: Standard thickness: 10mm,

Minimum thickness: 1mm

13. Check the front brake alarm plate

Make sure the alarm plate has enough elasticity, and is not cracked

or worn. Clean all rust, dirt and foreign materials

14. Check disc thickness

Measure the disc thickness with micrometer:

Standard thickness: 11mm

Minimum thickness: 10mm

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15. Remove the front disc

16. Installation is in the reverse order of the above-mentioned procedure

Notice:

(1) The maximum lateral runout of the disc surface should be no more than 0.05mm 

(Measured 10mm from the brake disc outside edge)

 (2) Be careful not to install the brake cylinder guide boot in the reverse direction

 (3) Make sure the cylinder and the piston oil seal are clean before installing the 

piston oil seal in the brake cylinder. Apply lithium soap base glycol grease to 
the piston surface. Never rotate the piston into the brake cylinder by force.

 (4) Install the brake caliper to tighten the bolt torque: 85~90 N.m

 (5) Replace the noise insulator when replacing the worn brake pad. Make sure the 

clip plate is in normal status. Otherwise, replace the floating clip plate 

 (6) Make sure the brake pad and disc surface are clean. Oil or grease is not attached.

 (7) Install the brake hose. Uion thread torque: 16~20N.m

 (8) Bleed the air in the brake system. Check the brake system for leakage.

 (9) Install the front wheel. The tire nut torque: 95~115 N.m

simultaneously.

floating

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Section 6  Rear Brake

Components

Repairing

1. Remove rear wheel

2. Drain the brake fluid

3. Remove the brake drum

(1) loose the parking brake handle

(2) Remove the cotter pin with a long nose pliers

(3) loose the spindle slot nut

Lower Return Spring

Oil Baf

fle Plate

Anchor Plate

Brake Bottom Plates

Left Cable Plate

Left T

orsion 

Spring

Adjusting Pawl Shaft

Pin

Left Adjusting

Pawl

Left Adjusting 

Plate

Brake Shoe I

Wheel Hub Bearing II

Rear Spindle Cap

Wheel Hub 

Bearing I

Stop W

asher

Wheel Hub 

Bolt

Rear Ring Gear

Rear Brake Drum

Rear Spindle Cover

Brake Shoe I

Shoe Guide

Friction Shoe

Boot

Cup

Piston

Wheel Cylinder

Spring

Piston

Boot

Cup

Parking Brake

Left Swing 

Arm

Rear Brake 

Auto 

Adjusting Lever

Adjusting Lever Spring

Return Spring

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(4) remove the brake drum

4. Measure brake drum inside diameter

Standard inside diameter: 180mm

Maximum inside diameter: 181mm

5. Separate the parking brake left swing arm. Loose the parking brake cable end joint

Separate the parking brake left swing arm. Remove the parking brake cable end joint with a screwdriver.

6. Remove the brake shoe I, brake shoe II

(1) using special tool, remove brake shoe positioning spring and pin

(2) remove brake shoe I and I after separating the return spring

7. Remove the rear brake automatic adjustment lever

Remove the brake adjustment lever spring and adjustment lever

8. Remove the return spring on the brake shoe

Remove the return spring from the brake shoe

Push