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.
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