2006 GREAT WALL SO COOL oil

SA-94
Mount of Rear Speed Reducer and
Differential Assembly
1. Mount the speed reducer and differential assembly on
the rear axle housing.
Tightening moment
(18-26)N
m
Remark: in case the sealing gasket is mounted, it should be
checked to see whether it is damaged before mounting, if
damaged, change with the new sealing gasket, and the dam-
aged sealing gasket should be clear away; if no sealing gasket
is mounted, no mount is required to mount. Clean the contact
face of the mounted axle housing and coat it with silicon-
rubber plain sealing agent.
2. Connect the drive shaft and flange well and be careful to
align the assembly marks marked when disassembling.
Tightening moment
(69-79)N
m
Screw up the oil drain plug with the Tightening moment
of (140-150)N
m
Mount on the half-shaft and the brake assembly to adjust the
brake oil path so that the wheel brake pump is filled with brake
liquid.
3. Inject in the heavy-duty oil.
Oil brand: heavy-duty oil graded GL-5;
Viscosity: SAE 85W/90
Oil volume: add the oil until it overflows from the oil filler
outlets.
Screw up the oil-filling plug.
Tightening moment
(140-150)N
m
Suspension System and Automobile and Axle (Rear)
Rear speed reducer (Mount of Rear Speed Reducer and Differential Assembly)

BR-2Braking System
Notice and Troubleshooting
Notice:
1. Carefully change each part where necessary because any
mistake will affect the brake system properties, and will lead
accidents during driving. And the parts to be changed must
be the same in part number or equal in quality.
2. Keep the parts and each position clean when repairing the
braking system.
Troubleshooting
Trouble Causes Inspection items
Lower or soft pedal Abrasion of brake shoe
Abrasion of brake pad
Oil leakage of braking system
Master cylinder failure
Air in braking system
Wheel-brake cylinder failure
Failure in the automatic regulator of rear brake.Change the brake shoe; Change the brake
pad;
Repair the oil leakage;
Change the master cylinder;
Drain out the air from braking system;
Change the wheel-brake cylinder;
Repair or change the regulator
Brake stagnantPoor adjustment of parking brake;
The bracing wire of parking brake is seized;
Poor adjustment of vacuum booster pushrod)
Failure of the drag spring or the return spring
Pipe line blockage
Brake shoe breakage or deformation
Brake pad breakage or deformation
Seizing of the wheel-brake cylinder or the brake
caliper piston
Automatic regulator breakage
Master cylinder failureAdjust the parking brake;
Make repairing according to real situation;
Adjust the drag rod;
Change the drag spring or the return spring
Make repairing according to real situation;
Change the brake shoe
Change the brake pad
Make repairing according to real situation;
Change the regulator
Change the master cylinder
Over large braking
distanceUnsuitable tire inflation
There is oil stain or lubricant on the brake shoe or
brake pad;
Brake shoe deforms, the brake liner is worn or polished;
Brake pad deforms or is worn or polished;
Brake drum or brake disc deforms
Drag spring or return spring has trouble
The wheel-brake cylinder has trouble
The inner piston of wheel-brake cylinder is seized;
The brake pad is seized;Inflate the air to suitable pressure;
Change the brake shoe or the brake pad;
Change the brake shoe;
Change brake pad
Change the brake drum or the brake disc;
Change the spring;
Change the wheel-brake cylinder;
Change the wheel-brake cylinder
Change the brake pad
The brake pedal is hard
but doesn
t work;There is oil stain or lubricant on the brake shoe or
brake pad;
The brake shoe deforms, brake liner is worn or
polished, or the brake wheel is worn;
The brake pad deforms, or is worn or polished;
The piston of wheel brake pump is seized;
The vacuum booster has trouble
The vacuum degree is unsuitable
The brake pipe line is blockedChange the brake shoe brake pad;
Change the brake shoe
Change the brake pad;
Change the wheel-brake cylinder;
Change the vacuum booster;
Make repairing according to real situation;
Make repairing according to real situation;

BR-3
Troubleshooting (continued)
Braking System
Notice and Troubleshooting
Trouble Causes Inspection items
There is clatter noise when using
the brake(Drum-type brake)
The brake shoe is seized on the flange of rear baffle;
The flange of rear baffle is worn;
The pressure spring of brake shoe is loose or missing;
The fixed bolts of brake bottom plate is loose;
(disc type brake)
The brake pad support plate is loose or missing
The mounting bolts are loose;Add lubricant
Change the lubricating flange
Change
Tightening it
Change
Tightening it
There is hoarse noise or quack-
quack when using the brakeThe brake shoe or brake pad is worn;
The brake caliper, the wheel or the rotator interferes each
other.
There is friction between the dust cover and brake disc,
the brake bottom plate and the brake drum;
The other braking part has trouble
There is friction between the tire and bodyChange the part, and re-process
precisely the brake drum or
rotator if the abrasion is serious;
Make change according to real
situation;
repair or change
Make repairing according to
real situation;
Change
Check or maintain the part
There is such noise as
continuous screaming, quack-
quack, oscillating sound, etc.
Notice: the braking materials
may generate the natural noise
and heat during friction, and
thus emit the energy. Therefore,
it is normal to have the
screaming noise. These
phenomena will be more serious
under the condition of frigidity,
torridity, and over humidity,
snowing and mud. the
screaming noise occurring
occasionally will not lead the
fatal brake trouble nor reduce
the effective properties of the
brake.The brake drum, brake liner, liner or brake pad is worn
or scraped
The brake liner or brake pad is dirty or with oil stain or
polished.
The brake liner or brake pad is improperly used.
The brake pedal or vacuum booster drag rod is unsuitably
adjusted.
(disc type brake)
The brake pad silent pad is loss or damaged;
The brake pad is worn to the degree that the abrasion-
indicating lamp of brake pad has friction with the rotator.
There is burr or rust on the brake caliper.
(Drum type brake)
The pressure spring of brake shoe is soft in rigidity, or is
damaged or unsuitable.
The pressure spring pin or spring of brake shoe is loose
or damaged;
There is crack on the brake bottom plate flangeCheck, repair or change
Clean or change
Check or change
Check for adjustment
Change
Change
Clean or polish the burr
Check, repair or change
Check, repair or change
Check, repair or change

BR-6
Operation test of vacuum booster
Remark: check the operation of vacuum booster with the
vacuum booster tester if workable.
1.Operation inspection
(a) Before starting the engine, tread down the brake pedal
several times, and check the pedal reservation distance to
ensure there is no change occurs.
(b) Tread down the brake pedal and start the engine. If the
treaded pedals continue to move downward, which means
the operation is normal.
1. Inspection on Air-tight
(a) Start the engine for 1-2 min and then turn it off. Then
tread down the brake pedal slowly for several times, if the
pedal move downward continuously in the first, but
return gradually in the second or third time, which means
the vacuum booster has a good air-tight.
(b) Tread down the brake pedal when the engine is working,
then stop the engine, but tread the pedal down. If the
reservation distance doesnít change within the 30 seconds,
which shows the air tight of vacuum booster is good.
Air-bleeding of braking system
Remark: air-bleeding is required if any operation for braking
system is conducted or the pipe line is doubted to have air.
1. Fill the oil cup with the brake liquid
Check the liquid level of oil cup after the air in each wheel
brake pump is exhausted. If necessary, add the brake liquid.
2. Connect the vinyl resin pipe with the vent screws.
Insert the other end of pipe into the container with half brake
liquid.
Remark: the air-bleeding shall begin from the longest pipe line
when the wheel-brake cylinder is exhausting the air.
3. Air exhaust of the pipe line in braking system
(a) Tread down brake pedal slowly several times.
(b) Loosen the vent screws until the brake liquid flows out
while letting the assistant tread down the pedal. Then
screw up the vent screws.
(c) Repeat this approach until there is no air in the liquid.
4. Repeat the approach for the wheel-brake cylinder.
normal
abnormal
the third time
the second time
the first time
Braking System
Inspection and Adjustment

BR-8Braking System
Master Cylinder
Master Cylinder
Disassembly of Master Cylinder
1. Tear down the alarm joint for liquid level;
2. Exhaust the brake liquid with the injector:
Notice: brake liquid must not be left on the paint surface,
if any, clear it away.
3. Tear down the pipeline of braking system;
Tear down the pipeline of braking system from the master
cylinder with SST.
4. Take apart the master cylinder:
(a) Tear down the four nuts and the three-way joint.
(b) Tear down the master cylinder and sealing washer from
the vacuum booster
cup cap
filtering screen
oil cup
vacuum booster assembly
sealing liner
master cylinder bodyfront three-way valve
SST
SST

BR-9Braking System
Master Cylinder
Mount of Master Cylinder
1. Adjust the length of vacuum booster pushrod before
mounting the master cylinder;
2. Mount the master cylinder:
Mount the master and sealing washer on the vacuum booster
with four nuts.
3. Connect the two pipelines of braking system;
Mount the brake pipeline on the master cylinder with SST and
screw up the nuts.
Fastening torque

Dr SF
(18
2)N
m
SL SK SY SJ
(19
1)N
m
4. Connect the alarm switch joint for liquid level;
5. Fill the oil cup with brake liquid and exhaust the air in
the brake pipeline;
6. Check to see whether there is brake liquid leakage;
7. Check and adjust the brake pedal.
SST
SST

BR-12Brake System
Vacuum Booster
4. Mount the pedal return spring.
5. Mount the brake master cylinder
(see Page BR-8)
6. Connect the hose and the vacuum booster.
7. Fill the oil cup with brake liquid and exhaust the air in
braking system.
(see page BR-6)
8. Check the liquid leakage;
9. Check and adjust the brake pedal
(See page BR-5)
10. Check the operation
(See Page BR-6)

BR-14
Brake pad change
Remark: Check the thickness of the friction material of brake
pad through the observation hole on caliper body after the
vehicle covers thirty thousand; if the thickness fails to fall
within the specified range, change is required. (If the brake is
used often, the thickness of friction materials of brake
pad is required to check whether it is within the specified
range after the vehicle covers more than ten thousand,
if not, change it.
1. Tear down the front wheel;
2. Check the thickness of friction material of brake pad:
Check the thickness of friction material of brake pad through
the observation hole on caliper body, if it fails to be within the
specified range, change it.
Min thickness: 2.0mm
3. Raise the wheel-brake cylinder:
(a) Tear down the short bolts of sliding sleeve;
(b) Uplift the wheel brake pump and hang it with rope to
protect the brake oil pipe.
Remark: Do not loosen the brake oil pipe and the bleeding plug.
4. Tear down the following parts:
(a) Two braking pads;
(b) Two silent pad clusters;
(c) Four braking pad lock plates.
Braking System
Front Brake (Dr)