GREAT WALL SAFE 2006 Service Manual
Manufacturer: GREAT WALL, Model Year: 2006, Model line: SAFE, Model: GREAT WALL SAFE 2006Pages: 484, PDF Size: 16.35 MB
Page 261 of 484
SR-5
Steering Column
Element figure of adjustable steering column
Steering SystemSteering Column
Dr SF
upper part of steering column
universal cardan joint
steering drive
shaft
upper part of steering column
steering drive shaftuniversal cardan joint
universal cardan jointsteering column
SL SK SY
SJ
Page 262 of 484
SR-6Steering SystemSteering Column
Dismantle of the steering wheel
1. Dismantle of the steering wheel;
(a) Take down the bugle cap;
(b) Pull down the bugle wire.
(c) Tear down the fixing nut of steering wheel.
2. Tear down the combined switch cover;
3. Tear down the cover at left bottom part.
4. Tear down the fixing bracket for the left-bottom cover.
5. Tear down the air passage;
6. Tear down the combined switch;
7. Tear down the fixed support seat bolts on front-wall panel;
8. Tear down the fixing bolts at upper part of steering
column, and
9. Tear down the connecting bolts of steering column
drive shaft.
10. Pull out the steering column.
Page 263 of 484
SR-7
Mount of Steering Column
1. Mount the ignition switch assembly
Fix the ignition switch on the steering column with SST.
2. Mount the dust cap and fixed support seat of steering
column on the front-wall panel.
3. Mount the upper part of steering column;
Mount the upper part of steering column on the fixed bracket
with SST.
4. Connect the upper part of steering column and the
steering drive shaft with the universal cardan joint;
5. Connect the steering drive shaft and the steering gear;
6. Mount the combined switch.
Fix the combined switch with SST.
7. Mount the combined switch cover;
Fix the combined switch cover with SST.
Steering SystemSteering Column
SST
SST
SST
SST
Page 264 of 484
SR-8
8. Mount the steering wheel:
(a) Screw up the fixing nuts of steering wheel according to
the specified torque.
Specified torque
Dr SF(505)N.m
SL SK SY SJ(302)Nm
(b) Connect the bugle wire;
(c Mount the bugle cap.
Steering SystemSteering Column
Page 265 of 484
SR-9Steering SystemManual Steering Gear
Manual steering gear
Disassembly and mount of manual steering gear
steering drive shaft
manual steering gear box
swing arm
Nmspecified torque
24525(Dr)
assembly mark
SSTPoints on disassembly and mount
1. Disassemble the steering drive shaft:
(a) Loosen the fixing bolts at upper part of steering column;
(b) Tear down the connecting bolts of steering drive shaft;
(c) Mark the assembly marks on the steering drive shaft and
worm shaft;
(d) Slide the shaft backward to tear it down from the worm shaft.
2. Tear down the swing arm from the steering gear:
(a) Loosen the fixing nuts of swing arm;
(b) Tear down the swing arm from the steering gear with SST.
9610(Dr SL SK SY)
worm shaft
Page 266 of 484
SR-10Steering SystemManual Steering Gear
3. Connect the swing arm to the steering gear:
(a) Mount the swing arm on the segmental gear shaft, and
mount the spring washer and steering arm.
(b) Screw up the swing arm nuts.
Fastening torque(24525)Nm(Dr)
4. Tear down the swing arm from the central transverse
drag rod;
Tear down the swing arm from the central transverse drag rod
with SST.
SST
Page 267 of 484
SR-11Steering SystemPower Steering (General Introduction)
power steering oil pump
power steering gear steering drive shaft
oil cup
Power steering
Introduction
Principal of Power Steering
The power steering is a kind of hydraulic device that use
the engine power to steer. The engine drive the power
steering oil pump to generate the hydraulic pressure, which
actuates the piston in steering gear, so that the worm shaft
can provide to the piston with a supplementary force, which
has relation with the pressure actuated on the piston.
Therefore, pressure increase is required if larger steering
force is needed, and the pressure variation is accomplished
through the control valve.
Intermediate position (forward straightly)
The liquid from the power steering oil pump is sent to
the control valve, which, if locates at the intermediate, will
allow the liquid to pass and enter into the drain outlet, finally
return the pump. At this time, it is difficult to increase the
pressure; meanwhile, due to the equal pressures at the both
sides of the power piston, it cannot move toward either side.
Steering time
When the steering drive shaft move toward either side,
the control valve will move together with it, in case one oil
passage is shut off, meanwhile open the other larger, the
liquid flow variation will increase the pressure, as result, the
unequal pressure at both sides of piston will make the piston
move toward the side of smaller pressure, therefore, the
liquid is pressed in the pump through the control valve.
pump control valve
drain outlet
power cylinde
power piston
segmental gear shaft worm shaftsteering gear
Pump
Page 268 of 484
SR-12Steering SystemPower Steering (Introduction)
Suggestion on maintenance
The failure of power steering system usually relates to the
steering difficulty due to lack of supplementary force. In such
case, it is the first to verify the problem is produced by the pump
or steering gear when repairing. In doing so, the problem can be
checked on vehicle with the pressure meter.
On-vehicle Inspection
As the power steering is a hydraulic pressure device, its
trouble usually caused by the lack of specified hydraulic
pressure or the abnormal work of control valve. As a result, it
cannot acquire the moderate hydraulic pressure.
In case the problem is caused by the pump, the steering
wheel will deflect toward right or left. On the other side, if the
problem is caused by control valve, when the steering wheel
rotates to left or right, the steering will become more difficult
due to the unequal supplementary force. However, when there
is wear on the piston sealing ring of power cylinder, it also cause
the hydraulic pressure loss that may lead into steering difficulty
toward right or left.
Before making inspection on vehicle, verify the power
steering system firstly to see whether there is air. If any, the air
volume will increase with the variation of hydraulic pressure,
which will cause the hydraulic pressure fluctuation that makes
the power steering work abnormally. In order to verify whether
there is any air in the system, check whether the liquid level
varies or not when the steering wheel rotates completely toward
the right or left. For instance, if there is air in the system, the air
will be compressed, which will reduce the liquid level
remarkably, when the steering wheel rotating. If there is no air
in system, the liquid level variation is very small even though
the hydraulic pressure increases. This is because the liquid
volume will not varies when being compressed. And the small
liquid level variation is caused by the expansion of hose
between the pump and steering gear when the hydraulic pres-
sure increasing.
Meanwhile, the air in system sometimes will cause the
pump or steering gear produce noise when the steering wheel
rotating completely toward a certain direction. After checking
or exchanging the pump or steering gear, the on-vehicle inspec-
tion should be often conducted to guarantee the normal work of
power steering system.
Page 269 of 484
SR-13Steering SystemPower Steering (On-Vehicle Inspection)
tensioning wheelpower steering oil
pump
crankshaftOn-vehicle inspection
Inspection on tension of driver conveyor
Measure the tension of drive conveyor.
Drive conveyor tension: under the condition of 98 N.
New conveyor: (5-7)mm
Old conveyor:(7-9)mm
Remark:
ìnew conveyorî means the conveyor that is used on the
machine less than five minutes;
ìold conveyorî means the conveyor that is used on machine
more than five minutes
Check for height of liquid level
1. Keep the body in horizontal status
2. Increase the liquid temperature
When the engine runs idly by 1000 r/m or less, rotate the
steering wheel several times from the locking position to the
reverse locking position to increase the liquid temperature.
3. Check to see whether there is foam or emulsification;
Remark: the foam or emulsification shows there is air in the
system or the liquid level is over-low.
4. Check the liquid level height in oil cup;
Check the liquid level height and, if needed, add the oil.
Page 270 of 484
SR-14Steering SystemPower Steering (On-Vehicle Inspection)
Change of power steering liquid
1. Tear down the oil-returning hose from the oil cup to
drain the liquid into the container;
2. Run the engine in the idle status, and rotate the
steering wheel toward the max rotating angle for
several times in right or left direction while draining the
liquid, until the oil in steering liquid is drained up.
3. Turn off the engine.
4. Connect the oil-returning pipe and inject the new
power steering liquid in the liquid tank;
Hydraulic oil type: No.8 Liquid drive oil (Q/SH003.01.012-88)
5. Start the engine, and make it running in the idle status.
Rotate the steering wheel to the max rotating angle repeatedly
several times, meanwhile, supplement new power steering
liquid in the liquid tank until there is no foam or turbidities in
the liquid tank, and the oil indicating lamp reaches the marked
range when the engine is turned off.
6. Tighten the liquid tank cover
7. Exhaust the air in the power steering system;
Ai-r bleeding in power steering system
1. Check the liquid level height in the liquid tank
Check the liquid level and, if needed, supplement the liquid.
2. Start the engine in the idle status and rotate the
steering wheel repeatedly to the max rotating angle
several times.
3. Turn off the engine and connect the ethane pipe and
bleeding plug.
4. Start the engine and rotate the steering wheel
repeatedly to the max rotating angle several times.
5. Locate the steering wheel at the intermediate position.