Great Wall Hover. Manual - part 75

Brake-21

Assembly of pump

1. During the assembly, coat the guide pin with the proper vacuum

sili con based grease; coat the operating surface of piston and

square gasket with proper rubber lubricant.

2. Install the piston gasket and piston in the tong

3. Install the cylinder hole dustproof cover and wire clip in the

tong.

4. Install the rubber pin cover on the tong bracket.

Installation of brake caliper

1. Install the brake block

Brake-22

2. Install the piston gasket in the tong body.

a. Screw the bleed screw into the bleed hole;

b. Install the square gasket in the sealing groove of two cylinders of

pump respectively after coat its working surface with proper

rubber lubricant.

Tightening torque 7

10N

m.

3. Connect the brake pipeline

Connect the brake oil pipe to the tong.

Tightening force:   50

5N

m

4. Fill up the brake system with the brake fluid and drain the air

in the brake system.

5. Check for leakage of brake fluid.

Rear parking brake

pull-out piece

spring draw bar

hand brake
stay wire

front brake shoe

lower tension spring

clearance-adjusting bolt

clearance-adjusting gear

clearance-adjusting
bolt head

pull-out piece
spring seat

pulling arm pin

rear brake shoe

brake shoe pulling arm

saddle type washer

push pedal

push pedal
 release spring

stopper

upper release spring

rear brake disc

 Used component which can not be used any more.

Removal of rear brake

Remarks: When the brake torque of the hand brake cannot meet

the brake requirement, the thickness of the brake shoe gasket

shall be tested. If it is less than the minimum value of brake show

gasket, the brake shoe shall be replaced.

minimum thickness: 1.0mm

Brake-23

1. Remove the rear wheel

2. Remove the rear brake caliper

3. Remove the rear brake disc

 Remarks:   If the brake disc is difficult to remove, remove the

 adjust ment spout plug, insert the screwdriver into the adjust

 ment spout of the rear brake bedplate, Release the brake shoe

 adjustment device through twisting the clearance-adjusting gear.

4. Remove the shoe plate, pull-out the piece spring , pull-out piece

 spring seat, pull-out piece spring draw bar

5. Remove the lower tension spring and clearance-adjusting device

Use clipper to remove the extension spring, release the clearance

adjusting device and remove it.

6. Remove the two upper extension springs

7. Remove the brake shoe

a. Remove the brake shoe, baffle, baffle return spring.

b. Remove the band brake stay wire from the stay and brake pulling

arm.

Brake-24

8. Remove the parking brake pulling arm

Use the screw driver to remove the parking brake pulling arm

Check and maintain the components of brake

1. Check the dismantled components

Check to se whether the dismantled components are wearing, rusted

or damaged.

2. Measure the internal diameter of the brake disc

Standard inter diameter: 210mm

maximum internal diameter: 212mm

3. Measure the thickness of the brake shoe

standard thickness:   4.0mm

minimum thickness:   1.0mm

If the thickness of the brake shoe is less than the minimum value, or

there is uneven wearing, the brake shoe shall be replaced.

Remarks:   If any one of the brake shoes needs to be replaced, all

the brake shoes need to be replaced to keep the even brake

performance.

4. Check whether the contact between the brake shoe gasket and

brake disc is sound.

If the contact between the brake shoe gasket and brake disc is bad, it

should use the brake shoe grinding device to repair or replace the

brake shoe assembly.