2008 GREAT WALL FLORID service

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Rear Suspension
Components
Rear shock absorber and
rear coil spring removal
1. Hoist the vehicle with a jack, then remove the left and
right rear wheels.
2. During the removal of the rear twist beam, use SST (Special
Service Tools) to clamp the coil spring, so that it does not
pop out and cause injury.
3. Compression spring.
Hold up the rear twist beam upwards with a lift, compressing
the rear coil spring and damper.
Upper mounting rubber cushion for the rear coil spring
Rear coil spring
Lower mounting rubber cushion for the rear coil spring
Large washerRear twist beam assembly
Rear shock absorber subassembly
Hexagon bolt for flange face
Hexagon nut for flange face
F

Downloaded from www.Manualslib.com manuals search engine 87Suspension System
Inspection, installation, and removal of the
trailing arm spindle sleeve assembly
1. Trailing arm spindle sleeve inspection.
(a) Inspect the trailing arm spindle sleeve for deformities,
shifting, partial or serious cracks, or loosening.
(b) If any existing damage of the trailing arm spindle
sleeve is not clearly seen, take the following steps:
Wash the trailing arm spindle sleeve's rubber areas with
clean water. Rub it clean with cotton meanwhile (shown
on the left). Check and make sure the rubber surface has
none of the previously mentioned flaws. If it does, re-
place with a new trailing arm spindle sleeve assembly.
2. Trailing arm spindle sleeve removal.
(a) Use a white paint pen to mark, and remember the trail-
ing arm spindle sleeve assembly direction.
(b) T h e t r a i l i n g a r m s p i n d l e s l e e v e i s d i s p o s a b l e . I f
damaged, first use a pry bar to lift up the edge of the
trailing arm spindle sleeve's outer tube in order to
install the SST (Special Service Tools).
Rear twist beam assembly removal
1. Hold up the rear twist beam assembly with a lift, and
remove the rear shock absorber and rear coil spring.
For detailed steps, refer to the rear shock absorber and
coil spring removal.
2. Remove the hexagon bolt for flange face
Q151B12110TF2 + Q402 (d2=35 t=5) FD, and slowly
set down the twist beam (as shown on the left).
Tightening torque: 77-87 N·m
When removing bolts, check and ensure that the rear
twist beam is reliably supported, to avoid injury from it
falling.
4. Remove the rear shock absorber.
Screw down the hexagon nut for flange face Q32012T13F2
(M12×1.25) FD linking the rear shock absorber and rear
twist beam, and remove the rear shock absorber. Make sure
the rear twist beam is firmly supported meanwhile.
Tightening torque: 44-54 N·m
5. Remove the coil spring.
Slowly release the firmly supported rear twist beam, at
the same time support the coil spring, until the coil spring
loosens, then take it down.
Rear shock absorber
Large washer
Hexagon nut for flange face

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(c) Use SST (Special Service Tools) to clog the shaft
sleeve's installation tube. Tighten the two adjusting
bolts, use a wrench to twist the middle long bolt, and
push out the shaft sleeve.
SST
3. Install the new trailing arm spindle sleeve assembly.
(a) Before installing the new trailing arm spindle sleeve
assembly, first to distinguish the installation direction
for the trailing arm spindle sleeve's nylon bushing as-
sembly.
(b) Use SST (Special Service Tools) to clog the shaft
sleeve's installation tube. Tighten the two adjusting
bolts, twist the middle long bolt with a wrench, and
push in the shaft sleeve.
SST

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Wheel
General tire balancing procedures
Clean out the accumulated dirt and debris from the inside of the rim.
Warning:
The gravel on the tread must be eliminated to avoid flying out and injuring the operator when
undergoing rotational balancing. This is also a good way to acquire better balance. First thoroughly
inspect the tire's damaged condition, then according to the balancing device manufacture's
recommendations, carry out the balancing operation.
Off-vehicle balancing
Most off-vehicle balancers are more accurate and convenient than on-vehicle rotational balancers. They are
also able to perform dynamic (two sided) balancing. Although it does not correct drum brake and brake disc
imbalance like on-vehicle balancing, it achieves the same effect based on its accuracy.
On-vehicle balancing
On-vehicle balancing is different based on equipment and tool manufacturer. Therefore, when performing
balancing operations, be sure to comply to each manufacturer's operating\
instructions.
Warning: Control the wheel rotation speed to make sure the speedometer stays within 55 km/h.
This restriction is necessary because when a driven wheel slides while the other one stays still, the
speedometer will display only half of the actual wheel speed. When a wheel is sliding, be extremely
careful, because sliding wheels can reach very high speeds. This may lead to the tire rubber peeling
or differential damage, which may cause serious personal injury, or damage to the vehicle.
Tire installation and removal
• Install or remove tires with a tire changer. When operating machinery, make sure to comply to the machine
manufacturers operation manual. Please do not change tires merely with manual hand tools or tire installation
crowbars. This will damage the tire chafer or the vehicle wheel's rim.
• Use a wire brush or coarse steel wool to clean off grease and old rubber, as well as light rust or corrosion from
the rim tire bead's tire chafer seat. Before tire installation or removal, first use the indicated tire lubricant to
thoroughly lube the tire chafer portions one time.
• After installing the tire, inflate it to the specified pressure and make\
sure the tire bead is properly seated.
Warning: Do not over-inflate the tire. If the tire bead severally expands and exceeds the safety limit,
it may burst and cause serious personal injury. While inflating, do not exceed the specified pressure.
If the specified pressure does not allow the tire bead to sit properly, deflate the tire, re-lubricate, and
then re-inflate.
Spare tire usage
• Spare tire standard inflation pressure: 420 kPa.
• Spare tire pressure measurements should be taken under normal temperatur\
e conditions.
• After inflating the spare tire, soapy water should be used to check if the air nozzles core is leaking air, then
lock on the air nozzle cap.
• The spare tire should always be kept in a useable state. Check the air p\
ressure at least once a month.
• When the spare tire's working limit, indicated by the remaining pattern's depth, reaches 1.6 mm (and its pat-
tern groove bottom protrudes to the same level), for your safety, please stop using the spare tire.
Caution:
• The "" symbol on the tire bead of the spare tire in-
dicates the set position of the wear index (shown on
the left).
• The spare tire's maximum driven speed is 80 km/h,
and maximum distance 200 km per trip.
• Each vehicle is allowed to use only one spare tire.
• The spare tire is only used as a temporary backup.
Please go to a professional service station immediately
to get the initial tire repaired or replaced.

Downloaded from www.Manualslib.com manuals search engine 107Brake System
Anti-lock Brake System
ABS/EBD introduction
1. Operation
The vehicle's Anti-lock Brake System (ABS) is a type of increasingly popular brake safety device. It detects the
wheel's speed using wheel speed sensor detection. After signal processing, the wheel speed will be transferred
to the computer, which controls the solenoid valve’s operating condition and the pressure inside the brake wheel
cylinder to avoid wheel locking by using certain calculations and control methods based on the wheel speed.
ABS helps the vehicle to avoid sliding, deviation, fishtailing, and losing steering control capacity. ABS improves
the vehicle’s handling capability, stability and shortens braking distance. It also helps the vehicle to avoid the
partial wear and tear of wheels, hence improves the tire's useful life.
Electronic Brake Distribution (EBD) is used to adjust the vehicle's rear wheel brake pressure by using the ABS
components when the ABS does not respond to vehicle braking. It is also used to balance the vehicle’s front and
rear wheel brake pressure, maximizing the vehicle's braking efficiency. EBD uses the ABS components, yet its
controlling logic is independent from the ABS. After the ABS responds, the EBD will disengage.
2. Basic structure
3. ABS working process
(a) Pressure rising phase: While service braking, oil pressure output from the pump passes the inlet solenoid
valve and enters the brake wheel cylinder. The brake generates braking force and the wheel speed sharply
declines until the ABS control unit detects that the wheel is starting to lock via the wheel speed sensor
detection.
(b) Pressure maintaining phase: When the ABS control unit detects that the wheel is starting to lock via wheel
speed sensor signal, the inlet solenoid valve closes, with the outlet solenoid valve shut as usual. The
pressure maintaining phase thus begins.
(c) Pressure drop phrase: During the pressure maintaining phase, the wheels tend to lock further. This brings
the ABS into the pressure drop phrase. With the inlet valve closed and the outlet valve open, the hydraulic
pump starts working, and brake fluid returns to the brake pump from the wheel cylinder by passing through
the low pressure accumulator. The brake pressure reduces and the brake pedal bounces back.
(d) Pressure maintaining phase: With the degree of wheel locking decreases and wheel speed begins to
increase, the pressure maintaining phrase begins.
(e) Next cycle’s pressure rising phase: When the wheels reach a certain speed, the ABS enters the pressure rise
phase and starts the next cycle.
Note: The ABS's pressure adjusting frequency is generally 2 to 4 cycles per second.
ABS control unit
Wheel speed sensor
Wheel speed signal
Wheel cylinder
Valve work instruction
Hydraulic modulator
Vacuum booster & master cylinder

Downloaded from www.Manualslib.com manuals search engine 111Brake System
ABS trouble code list
Trouble codeFault description
C0035Front wheel speed sensor LH circuit failure, velocity failure
C0040Front wheel speed sensor RH circuit failure, velocity failure
C0045Rear wheel speed sensor LH circuit failure, velocity failure
C0050Rear wheel speed sensor RH circuit failure, velocity failure
C0060Front ABS outlet solenoid valve LH failure
C0065Front ABS inlet solenoid valve LH failure
C0070Front ABS outlet solenoid valve RH failure
C0075Front ABS inlet solenoid valve RH failure
C0080Rear ABS outlet solenoid valve LH failure
C0085Rear ABS inlet solenoid valve LH failure
C0090Rear ABS outlet solenoid valve RH failure
C0095Rear ABS inlet solenoid valve RH failure
C0110Pump motor circuit failure, operational error
C0121Solenoid valve relay circuit failure
C0161Brake switch circuit failure
C0245Wheel speed sensor frequency error, wheel speed sensor signal failure
C0287Acceleration sensor failure
C0550ECU failure
C0800Voltage fault, voltage too high or too low
C0232Warning lamp positive short circuit, warning lamp ground short circuit
should also be removed from the ECU.
(d) Do not let oil contaminate the ECU. Be especially careful of the ECU terminals, otherwise it might obstruct
the connection among terminals of the wire harness plug.
Note: The BOSCH ABS8.0 hydraulic pressure unit (integrated into the ECU) is not serviceable. If
damaged, the whole unit must be replaced.

Downloaded from www.Manualslib.com manuals search engine 125Brake System
Method two:
(a) Find two M6×40 (the thread is longer than 25 mm)
phillip screws, and screw them into the rear brake
drum's two threaded holes.
(b) Use a screwdriver to tighten the phillip screw, and push
out the rear brake drum.
Caution: Alternately tighten the two screws.
5. Remove the brake leading and trailing shoe assembly
and adjusting paddle.
(a) Use SST (Special Service Tools) to separate and remove
the pressure spring cap of the brake leading and trail-
ing shoe assembly, and remove the pressure spring and
pressure spring bar.
(b) Take out the brake leading and trailing shoe assembly
from the brake back plate assembly, take down the
retainer spring, and remove the cable connector.
Remark: When taking out the brake leading and trailing
shoe assembly from the brake back plate assembly, screw
the adjusting clearance wheel thread completely into the
adjusting clearance screw rod, decrease the return spring's
tension on the brake leading and trailing shoe assembly.
(c) Use needle nose pliers to remove the brake shoe tension
spring, and take down the adjusting paddle.
(d) Use pliers to remove the return spring from the brake
leading and trailing shoe assembly, and separate the
brake leading and trailing shoe assembly.
SST
M6×40

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7. Install the brake cable connector on the brake trailing
shoe with brake lever assembly.
(a) Install the brake cable connector on the brake trailing
shoe with brake lever assembly.
(b) Insert the brake trailing shoe with brake lever assembly
and the shoe end of the brake leading shoe assembly
into the wheel cylinder assembly.
Remark: Do not let oil or grease drip on the brake shoe's
lining.
8. Install the retainer spring.
9. Install the brake leading and trailing shoe assemblies
onto the brake back plate assembly.
(a) Insert the pressure spring bar into the brake back plate
assembly and brake leading and trailing shoe assemblies.
(b) Put the pressure spring on the pressure spring bar,
put in the pressure spring cap, and use SST (Special
Service Tools) to lock the pressure spring cap onto the
pressure spring bar.
10. Inspect the operating procedures of the automatic ad-
juster.
(a) Refer to the diagram for directions, step on and off the
brake pedal, and make sure the self-adjusting screws
can rotate. If they are unable to rotate, inspect the rear
brake to try to determine the source of the problem.
(b) Adjust the adjusting mechanisms length and make it as
short as possible.
(c) Install the rear brake drum.
(d) Press the brake pedal towards the floor until a clicking
noise cannot be heard.
11. Inspect the space between the brake's friction plate
and rear brake drum.
(a) Remove the rear brake drum.
(b) Measure the rear brake drum's internal diameter and
the brake shoe friction plate's external diameter, and
inspect if the difference between the two diameters is
within the regulated clearance range.
Single sided clearance: 0.25 mm
If not correct, inspect the braking system.
12. Install the rear wheel.
Tightening torque: 100 N·m
13. Fill the brake fluid reservoir up with brake fluid and
exhaust the air out of the brake system.
14. Check for leaking brake fluid
SST