roof GREAT WALL HOVER 2006 Service Owner's Manual

Brake-3
Troubleshooting (continued)

failure caus e Inspection content


The brake generates the
crack clatter during
operation. (drum brake)
The brake shoe is blocked in the rear apron flange
The rear apron flange is worn
The brake shoe pull-out piece spring is loose or lost
The fixed bolt of rear apron is loose (disc brake )
Brake block support plate is loose or lost
Installation bolt is loose
Filled with lubricated oil
Replace the lubricant flange
Replace
tighten
replace
tighten



It has the rustle or rattler
when use the brake The brake shoe gasket or brake block is worn
The brake caliper and wheel or rotor are disturbed
mutually
The dustproof cover and rotor, rear apron and brake
drum are disturbed mutually
Failure of other brake system component
Tyre generates the abrasion with the tyre and chassis Replace, if the scratch is heavy,
then fine machine the brake drum or
rotor again
Replace it according to requirement
Correct or replace
Repair or replace it according to
requirement
Check or maintain
It has the squeak, continuous
scream, rattler or vibration
noise when use the brake .
Caution: The abrasion
material in the brake will
generate the inherent noise
and heat during the
abrasion, then emit the
heat. So it is normal that
generate the squeak by
accident. The condition
will be serious in extreme
environment, such as cold,
hot, high humidity,
snowing, saliferous and
mud. The accident squeak
will not cause the fatal
failure of the brake, and
will not reduce the effective
performance of the brake. The brake drum and brake shoe gasket, rotor and
brake block is worn or scratched.
The brake pad or block is dirty, with oil or smoothed.
The brake pedal or assistor push bar is adjusted
incorrectly
(dis c brake )
The brake block silencing plate is lost or damaged.
The abrasion of the brake block makes the brake
block abrasion indication plate contacts the rotor
The brake ca lip er has burr or is corrosive
(drum brake)
The pull-out piece spring of brake shoe is soft,
damaged or improper. The pull-out piece spring pin
and spring of brake shoe is loose or damaged; and
rear apron flange has crack Check, repair or replace
clean or replace
check, replace
check and adjust
replace
replace
clean or remove the flash
check, repair or replace

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 covercooper washer
tong
air-bleed
bolt cover
location pin
guide pin dustproof coversquare 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-14
Assembly of brake pump
1. Preparation work
All components should be washed, dried by wind and without foreign
material before the assembly. During the assembly, cost the guide pin
and location pin with proper vacuum silicon based grease; coat the
working surface of piston and square gasket with proper rubber
lubricant.
2. Install the piston gasket in the tong body.
a. Screw the bleed screw into the bleed hole;
tightening torque 7
10Nm.
b. Install the square gasket in the sealing groove of two cylinders of
pump respectively after coat its working surface with proper
rubber lubricant.
3. Install the piston with dustproof cover in the tong
a. Cover the dustproof cover on the piston.
b. Lengthen the dustproof cover to expose the bottom of piston
from the dustproof cover clip ring; use the tool (for example: steel
wire about
2mm ) to assist insert the clip ring into the cylinder
hole clip ring groove.
Caution: The used tools must not be sharp to prevent the damage
of dustproof cover.
c. Press the piston to the bottom of cylinder hole by hand.
4. Pre Install the guide pin and location pin on the tong bracket.
a. Install the guide pin dustproof cover on the guide pin and location
pin respectively.
b. Screw the guide pin and location pin in the tong bracket
respectively.
Caution: Do not damage the guide pin dustproof cover.

Brake-16
Rear brake (Disk-and-drum type)
tong bracket
pin rubber cover
brake caliper locking bolt 100
silencing plate
combination
outside brake block
inside brake block
brake block wearing
indication plate
cylinder hole
dustproof cover
wire clip
rectangle seal ring
piston
tong body (left)
copper washer
brake oil pipe fastening blot 55
location pin 2530
bleed screw
bleed screw dustproof cover
guide pin 2530
rear brake oil pipeline
N
m: specified torque
peepholesilencing
plate
Replacement of brake block
Remarks: if the rear wheel generates the cheep during the braking,
it should check the abrasion indication plate of brake block. If the
indication plate has the abrasion mark with brake disc, then it
should replace the brake block .
1. Remove the rear wheel
2. Check the thickness of brake block bush.
Measure the thickness of the brake block bush (abrasion material)
from the eyehole of tong. If the thickness is not within the specified
range, then it should replace the brake block.
minimum thickness: 2.0mm.

Brake-19
Removal of brake pump
1.Remove the brake pipeline
Remove the brake pipeline. Use a container to contain the brake fluid.
2. Remove the pump form the bracket
a. Remove the location pin and guide pin.
b. Remove the tong.
3. Remove the brake block
a. Two pieces of brake block
b. Two pieces of silencing plate
c. Two pieces of silencing plate combination
d. One piece of brake block bush abrasion indicating plate
e. Two brake block circlips
Disassembly of brake pump
1. Remove the piston form the tong
a. Insert the cleaning cloth or other soft cloth into the place between
piston and tong.
b. Use the compressed air to remove the piston and cylinder hole
dustproof cover from the tong.
Warning: it must not place the finger in front of the piston when
use the compressed air.
2. Remove the piston gasket form the tong
Use the screwer to remove the piston gasket.

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