2006 GREAT WALL SAILOR Rf valve

BR-42Braking System
Load Sensing Proportion Valve
Load Sensing Proportion Valve
Element figure
Inspection on and Adjustment of hydraulic
pressure
1. Adjust the load on rear shaft
Load on rear shaft (including the vehicle weight): 800kg
2. Mount the load sensing proportion valve instruments
(SST) and exhaust the air.
location plate
valve bracket
load inductive valvebraking hose bracket
flat washerflat washer
load inductive spring
assembly
inductive spring bracketclaming head I
claming head II

split pin
shaft bush

Parts that cannot be reused after being usedsnapping ring

BR-43Braking System
Load Sensing Proportion Valve
3. Check the rear brake pressure on the condition that
the front brake pressure increases to 7,845kPa
Rear brake pressure: (4,315
490)kPa
If the brake pressure is incorrect, adjust the hydraulic pressure.
4. Adjust the hydraulic pressure if necessary:
(a) Adjust the length of claming head II.
When lengthen the A distance, the rear brake pressure; if A
distance is shortened, the rear brake pressure reduces.
Initial adjustment: 78mm
Adjust range: (72-84)mm
(b) In case no even brake pressure is obtained after adjusting
the claming head, raise the valve or move it downward.
If the valve moves forward, the rear brake pressure will reduce;
if the valve moves downward, rear brake pressure will increase.
(c) Screw up the nuts.
(d) Adjust the length of claming head II again.
If it is unsuitable after re-adjustment, change the valve.
Disassembly of load sensing proportion valve
1. Tear down the claming head II from the bracket;
2. Tear down the load sensing proportion valve cluster:
(a) Tear down the brake pipeline from the valve with SST.
A
SST
kPakPa

BR-44Braking System
Load Sensing Proportion Valve
(b) Tear down the mounting bolts of valve bracket, and load
sensing proportion valve cluster.
Mount of Load Sensing Proportion Valve
1. Mount the load sensing proportion valve cluster on the
frame.
2. Connect the claming head II with the bracket:
(a) Mount the claming head on the load inductive spring;
(b) Adjust the spacing A.
Initial adjustment: 78 mm;
(c) Mount the claming head II on the claming head bracket
3. Connect the brake pipeline;
Connect the brake pipeline with SST.
Fastening torque

Dr SF
(18
2)N
m
SL SK SY SJ
(19
1)N
m
4. Adjust the rear shaft load
5. Adjust the valve:
(a) When drag downward the load inductive spring, the
valve piston shall move downward smoothly.
(b) When mount the valve body, the valve piston shall touch
the load inductive sensing spring lightly.
(c) Screw up the mounting nuts of valve body.
SST

BR-45Braking System
Load Sensing Proportion Valve
6. Exhaust the air in braking system
7. Check and adjust the hydraulic pressure of load
sensing proportion valve.

SR-11Steering System
Power 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

SR-12Steering System
Power 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.

BE-8Body Electric System
Protective Box Position and Content
Content of Protective Box
1 protective box I
fuse
1.Small lamp 10A
2.Rain brus 20A
3.Ceiling lamp 10A
4.(Cigarette lighter) 15A
5.Back -u 15A
6.Brake 10A
7.electric window 30A
8.Instrument 10A
fuel delivery/break electromagnetic valve10A(diesel

9.Central control lock 15A Dr
A
B
C



1
2
3
456
789
SL SK
U
N
O
V
P
Q
R NM
NN
NO
S
T NP
NQ
FUSE
1. Protection 10A
2. Unload
3. Charging 10A
4. Back-up 10A
5. ECU 10A
6. Unload
7. Rain wiper 10A
8. Stop lamp 10A
9. Ceiling lamp 10A
10. Central control lock 15A
11. Dual flasher 10A
12. EC 10A
13. Fuel pump 10A
14. Cigarette lighter 15Arelay
A electric window relay
B. small lamp relay
C.(flasher)

(plugging elements of ceiling
lamp wire harness)

(plugging elements of wire
harness in engine room)

BE-80
Wire harness at tail door and of rear air-conditioner
SY SJ
wire harness of rear
air-conditionerwire harness
of rear brush
1
2
3456
7
8V 10 1112 13
NQ
Only the vehicle with SY model has the wire harness of rear air-conditioner shown in above-mentioned wire harness.
1 rear A/C switch
2 connected to cab wire harness
3 rear air-conditioning relay
4 grounding wire
5 temperature control switch
6 electromagnetic valve
7 temperature controller8 speed-adjusting resistance
9 license lamp
10 license lamp
11 rear brusher motor
12 defroster
13 defroster
14 connected to cab wire harness
Body Electric System
Wire Harness Distribution