brake fluid GREAT WALL HOVER 2006 Service Owner's Manual

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.

Brake-15
Installation of brake caliper
1. Install the brake block
2. Install the brake pump
a. Install the brake pump.
b. Install and tighten the hexagon flange bolt.
Tightening force: 25
35Nm
3. Connect the brake pipeline
Connect the brake oil pipe to the tong body.
Tightening force: 50
5Nm
4. Fill up the brake liquid reservoir with the brake fluid and dis
charge the air in brake system.
5. Check for the leakage of brake fluid.
Caution: Discharge the air after the completion of replacement.

Brake-18
8. Install new brake block
a. Install a brake block bush wearing indication plate on the internal
brake block.
b. Install one silencing plate and one silencing plate combination on
each brake block.
Remarks: Coat the two sides of silencing plate with disc brake
oil (which cannot be replaced with oil of other models).
c. Install two brake blocks, make the wearing indication plate in the
lower position (near the tank cylinder).
Remarks: The working surface of the brake block and brake
disc are not allowed to be contaminated by grease and paint.
9. Install the sub pump
a. Unscrew the release screw, absorb some of the brake fluid.
b. Press the plunger with hammer beam or similar tools, and unscrew
the release screw at the same time.
Tightening force: 8
13Nm
Remarks: Only the brake block of one wheel can be replaced for
once, lest the plunger on the opposite side be bounced.
c. Install and tighten the location pin.
Tightening force: 25
30Nm
10. Install the rear wheel
Tightening force: 120N
m
11. Fill up with the brake fluid and drain the air in the brake
system after the completion of replacement.

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-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
10Nm.
3. Connect the brake pipeline
Connect the brake oil pipe to the tong.
Tightening force: 50
5Nm
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-30
Replace of load-sensing proportional valve
1. Removal
Disconnect the brake pipeline form the valve; remove the lock nut and
remove the adjusting bolt from the suspension arm bracket; remove the
installation bolt and take off the load-sensing proportional valve assembly.
2. Installation
a. Use two installation bolts to fix the load-sensing proportional valve.
The bolt tightening torque is 23N
m,
b. Tighten the adjusting bolt locking nut,
c. Connect each brake pipeline.
The tightening torque of the connector is 16N
m,
d. Filled with the brake fluid, discharge the air from the brake system;
check the brake pressure and leakage. output manometer
input manometer

Brake-31
Antilock Braking System (ABS)
Cautions
1. It must not remove or install the electric elements and wire bunch plug when the ignition switch is in ON to avoid
the damage of ECU. It should turn off the ignition switch if needs disassembly.
2. Pay attention to do not knock or impact the ABS ECU during the maintenance and repair, for it will damage the
ABS ECU easily.
3. The wheel speed sensor and hydraulic unit (integrated with ECU) of BOSCH ABS8.0 can not be repaired, it should
be replaced in integral if damaged.
4. After the brake system is maintained, the brake pedal maybe soft. Discharge the air according to the normal brake
system.
5. It must use the brake fluid from original manufacturer; the brake fluid of different number cannot be used in mixed,
otherwise it will cause the failure of brake system. Select the tyre of original type as most as possible
Repair of Antilock Braking System (ABS)
1. It should process the failure diagnosis for the brake system before process the ABS failure diagnosis. It can
diagnose out the failure rapidly by using Table 1. In Table 1, the small number means the failure which occurs most
possibly. Check each element according to the sequence and maintain or replace it if necessary.
2. Check the following elements for normal operation before the diagnosis:
Brake fluid level and brake fluid quality
Pressure of tyre, size of tyre, shape and depth of tyre figure
Other brake component
These components will affect the brake effect of the ABS. Check the system sensor, connecting wire and connector for correct
installation, arrangement and connection. Ensure the completeness of fuse, repair or replace it if necessary.
3. Process the analysis and diagnosis according to the ABS advanced by owner. Use the diagnosis instrument (Annex
1) for final check and confirmation. It must process the run inspection after the competition of all ABS maintenance.
The test condition is shown as follows:
a. Confirm the tyre complies with the requirement, the tyre pressure is normal.
b. The brake system (including brake light ) is normal
c. The brake system is without leakage.
d. The position and installation of wheel speed sensor is correct.
e. All fuses are normal.
4. test method:
Run for 1 min at least when the vehicle speed is beyond 40Km/h, process a proper brake. Then read out the failure code to
ensure the ABS is without failure code.

Brake-32
Table 1

Name of element
(failure) Brake is low or
soft Lag of brake Block of brake The brake is very hard
but has bad eff ect Brake
noise
Brake system (leakage of brake
fluid) 1 1
Brake system (with air) 2 2
brake shoe (worn) 3
Piston oil seal (worn or
damaged) 3
brake pedal (small free stroke) 1
Brake mai n p ump (fai lur e) 4 1 1
parking brake (brake shoe is out
of round) 4
parking brake (improper
adjustment) 2
parking brake pull-wire (lag) 3
Assist push bar (improper
adjustment) 5 9 8
Tension or release spring (failure) 8 8
brake shoe (crack or
deformation) 5 5 4 1
Piston (lag) 6 1
brake shoe (with oil) 2 5
Piston (block) 7 3
assist system (vacuum leakage) 10 9
brake shoe support plate (loose) 4
fixed bolt (loose) 2
Slide pin (worn) 5
brake drum (crack) 4 7 3
brake shoe (with foreign
mater ial) 6 6
brake shoe (harden ) 7
Noise reduction plate (worn) 9
Press spring (damaged) 10

Appendix B-12
Non-metal materials consumption table
Name Brand, specification and
technical condition Utility Measuring
unit Suitable Note
Silicon oil Transmission lever. Three-hole
rubber block Kg Suitable
Thread block
sealing agent 1271 Short, longitudinal front fixed
bolt, hub cap bolt, transmission
lever bolt, carriage fixing L Suitable
Silicone rubber
surface sealing
agent 1596 (super gray) Installing ring flange L Suitable
Anti-freeze
liquid vinyl-EG --35℃
antifreeze liquid Radiator and co-tank - Kg 7
Molybdenum
disulfide
pressed
lithium base
grease 3# Twisted bar spline, speed shaft L Suitable
Glass base
coat er 5001TF Glass base coat m 0.03
Butyl tape 6×2×700 Air-filtering suction tube, door
seal film L Suitable
Attraction
steering fluid DEXRON3 (ATF-3) Steering fuel cup assembly L 1
Clutch oil DOT4 Clutch master cylinder L 0.15
Brake fluid DOT4 Vacuum assist fluid reservoir L 0.525
Auto gear oil GL-4 75W/90 Transmission L 2.2 For the exported
vehicle for
extremely cold
areas

Auto gear oil GL-4 75W/90 Transfer case L 2.7 For the exported
vehicle for
extremely cold
areas

Auto gear oil GL-4 80W/90 Transmission L 1.4
Auto gear oil GL-4 80W/90 Transfer case L 2.5
Auto gear oil GL-5 75W/90 Rear axle L 2.9 For the exported
vehicle for
extremely cold
areas
2.9L=5.14PTS
Auto gear oil GL-5 80W/90 Rear axle L 2.9 2.9L=5.14PTS