Great Wall Hover. Manual - part 72

Brake-9

Front brake

front brake oil pipe

cliper bracket

outer silencing plate combination

lower circlip of

 brake block

brake block assembly

lower circlip of brake block

wear limitation alarm plate of brake block

lnner silencing plate combination

Inner brake block

silencing plate

upper circlip of brake block (I)

upper circlip of brake block (II)

piston

dustproof cover

guide pin dustproof cover

guide pin rubber cover

cooper washer

tong

air-bleed
bolt cover

location pin

guide pin dustproof cover

square seal ring

N 

m:       Specified torque

Piston

Replacement of brake block

Remarks:

When brake during the travel process, if the front wheel has the

continuous screams noise, then it should check the wear limitation

alarm plate of brake block. If the alarm plate has the abrasion

mark with brake disc, then it should replace the brake block .

1. Remove the front wheel

2. Check the thickness of abrasion material of brake block.

Check the thickness of abrasion material of brake block by the watch

hole on the tong.

Replace it if is not within specified range.

Min. thickness :   2.0mm

Brake-10

3

Lift the main body of brake caliper.

a. Remove the hexagon flange bolt.

b. Lift the brake pump and hang it by rope to protect the brake oil

pipe.

Remarks: Do not screw off the brake oil pipe and bleed plug.

4. Remove the following components

a. Two pieces of brake block

b. One piece of silencing plate

c.   Two piece of silencing plate combination

d. One wear limitation alarm plate of brake block

e. Four brake block circlip plates

5. Measure the thickness of brake disc

(Refer to step 2 of “ Inspection of component of front brake” )

6. Measure the circular runout of brake disc.

(Refer to step 3  of “Inspection of component of front brake”)

7. Install the brake block circlip plate

Brake-11

8. Install the new brake block

a. Install a wear limitation alarm plate of brake block on the inner

brake block.

b. Install a silencing plate and a silencing plate combination on the

inner brake block.

c. Install a silencing plate combination on the on the outer brake

block.

d. Install two brake blocks; let the wear limitation alarm plate is in

the inside of brake caliper.

Caution: It is unallowable that the operating surface of brake

block and brake disc is polluted by the grease and paint.

e.

Suck a few of brake fluid form the liquid reservoir (prevent the

brake fluid from overflowing from liquid reservoir).

f.

Use the special tools to press the piston .

9. Install the brake pump

Install and tighten the hexagon flange bolt.

Tightening force:   25

35N

m

Remarks:  Only can replace the brake block on a wheel in one

time to avoid the piston on another wheel is pushed out.

10. Install the front wheel

 Tightening force of the wheel fixing nut is 120N

m

11. Check whether the brake fluid level is in the specified position.

Brake-12

Removal of brake pump

1. Remove the brake pipeline

Remove the brake pipeline. Use a container to contain the brake fluid.

2. Remove the brake pump from the clamp bracket

a. Remove the hexagon flange bolt, location pin and guide pin.

b. Remove the brake pump.

3. Remove the brake block

a. Two brake blocks

b. One silencing plate

c. Two silencing plate combinations

d. One wear limitation alarm plate of brake block

e. Four brake block circlips

Disassembly of brake pump

1. Remove the piston form the tong

a. Place the wood block between the tong bracket and tong body .

b. Use the air gun or air pipe to aim at the brake oil pipe hole; remove

the piston form the tong.

c. Use the clean rag or soft cloth to take out the piston.

Warning: It must not place the finger in front of the piston when

use the compressed air.

2. Remove the piston gasket from the tong body.

Use the paper clip to remove the piston gasket.

Caution: The used tools must not be sharp to prevent from scratching

the piston gasket.