2006 GREAT WALL SO COOL differential

IN-2
How to use this manual
In order to help you to look in this manual, we marked the chapter
name and main theme at the top of each page.
In order to introduce the repairing items to you, we make the index on
the first page of each chapter, and notices need to be taken during all
repairing operation are also given in the related chapter.
Please read these notices carefully before the repairing work.
The troubleshooting form for each system will help you to diagnose
the system trouble and its cause.
We furnish with the repairing approaches for each possible cause in
the repairing approach column, which will help you to acquire the
solution in a short time. Introduction
How to Use This Manual
Repairing approach
Most repairing operation can begin with referring to these illustrations.
These illustrations can help you identify the parts and their coordina-
tion situation
Example


snapping ring
front minor half-shaft
front speed reducer
and differential

oil seal-front semi-axle
front long
semi-axis

snapping ring
88
N*m
specified torque

Parts that cannot be reused after being used

IN-5
Body lifting height and supporting position
wrong correct
Introduction
Body Lifting Height and Supporting Position
Jack lifting position
...........................................................................................................
Front......the front the beam center
Rear.....rear differential
Supporting position

safety bracket .............................................................................................
front
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b) The raised vehicle must be supported with the bracket; it is
dangerous to conduct the repairing work on the vehicle propped
up with one jack, even though such repairing can be finished in
short time.
12. The following items shall be taken notice to avoid the parts damage:
a) Do not open the covers of ECU and various computers where not
necessary absolutely. (if the IC terminal is touched, it be leaded
into static damage) .
b) Pull the hose at its ends when dismantling it, do not pull it at the
center section.
c) Pull the wire joint instead of the wire when pulling the joint
away.
d) Take notice to avoid of the drop of electric parts such as the
sensors or repeaters. In case those parts drop to the hard ground,
they must be changed instead of being reused.
e) Do not use the striking spanner to dismantle or mount the
thermostatic switch or thermostatic sensor.
f) Plug the needles of the multi-meter into the wire connector
carefully when checking its conductance and do not bend the
terminals.
g) Do not sheath the hose of the vacuum gauge into the very large
connector when using the gauge, instead, the stage joint shall be
used because once the hose expands, it is possible to lead into
the leakage.

MT-3
Troubleshooting
Gear Box
Troubleshooting
Non-use of clutch
Non-full separation of clutch
Severely warned tooth rings of synchronizing
fittings
Over-hard locating springUse the right driving approach
Checking for adjustment
Change
Change Difficulty in gear engagement
Over-low oil level
Lubricating oil of inferior quality
Non-timely oil change
Unsuitable axial location or clearance of gears
Bearing damage
Burr or collision on gearAdd oil to the specified level
Change it with the specified oil
Change the oil and damaged parts
Check for adjustment
Change
Repair or change the gear
Oil leakage, oil penetration Oil added above the specified level
Loss or missing of bolts
Vent plug trouble
Sealing element damageAdjust oil to the given level
Reassembling or fasten the bolt according to
the specified torque
Change
Change
Damage of synchronizer Overexert in gear shift
Non-use of clutch
Damage on spring collar of synchronizer
Incorrect mounting of drive shaftChange
Use the right driving approach
Change
Check for adjustment
Non-engagement of gear Trouble in controlling mechanism
Incorrect assembling the locating spring or
steel ball
Invalidation of locating spring
Severely worn gear sleeve or fork groove
Seriously worn toggle forkCheck for adjustment
Reassembly
Change
Change
Change
Burning bearing, burning gear Over-low oil level
Inferior lubricating grease
Non-timely oil change, over-dirty oil
Inter-use of differential oil or usage of
additiveChange damaged parts and add oil
Change the damaged parts and lubricating oil
Change damaged parts and lubricating oil
Change damaged parts and lubricating oil
Difficult in gear disengagement Spring invalidation of synchronizer
Warn inner groove of tooth ring of synchronizer
Tooth ring of synchronizer choked on conical
face
Toggle fork deformation or toggle fork axle
deformation
Severely worn toggle forkChange
Change
Change
Change
Change
Methods for troubleshooting
Over-loud or abnormal noise
Common Failures Causes

PR-5Drive Shaft
Drive Shaft
(4WD)
Rear axle drive shaft
1. Take apart the universal joint flange fork of rear axle drive
shaft from the differential flange.
(a) Label the two flanges with assembly marks.
(b) Take apart the four sets of bolt and nut.
Disassembly of Drive Shaft
(2WD)
1. Take apart the universal joint flange fork of the drive shaft
from the differential flange.
(a) Label the two flanges with assembly remarks.
(b) Take apart the four sets of bolt and nut.
assembly mark
2. Take apart the center support bearing from the frame
beam (for the three-joint type)
3. Take apart the drive shaft from the gearbox
(a) Pull out the universal joint yoke from the gearbox.
(b) Insert the SST in gearbox for oil leakage prevention.
2. Take apart the center support bearing from the frame
beam (three-joint type
SST
assembly mark

PR-12Drive Shaft
Drive Shaft
Mount of Drive Shaft
(2WD)
1. Insert the universal joint yoke in the gearbox.
(a) Tear down the SST tools.
(b) Push the universal joint yoke into the gearbox.
2. Connect the universal joint flange of the rear joint of rear
axle drive shaft and the relative the differential flange.
(a) Align the assembly marks on the two flanges and connect
the flanges with four sets of bolt and nut.
(b) Screw up the sets of bolt and nut according to the
specified torque.
Fastening torque
(74
5)N
m
3. Mount the center support bearing on the frame beam
(three-joint type)
(a) Use two bolts to mount the center support bearing on the
frame beam and tighten them manually.
(b) Check the bearing seat, which shall be vertical with the
drive shaft, and change it where necessary.
(c) Check the central line of the central bearing and ensure
that the central lines of the central bearing and the bear-
ing seat shall be the same when the vehicle is in the non-
loaded stage. And adjust the bearing seat only it is
necessary.
(d) Screw up the mounting bolts according to the specified
torque.
Fastening torque
(40
5)N
m
(4WD)
1. Connect the universal joint flange fork of the front axle
drive shaft with the flange that matches with the transfer
box.
Align the assembly marks and use four sets of bolt and nut to
connect the flange fork with the flange, screw up the sets of bolt
and nut according to the specified torque.
Fastening torque
(74
5)N
m
forward
SST
assembly mark
assembly mark

PR-13Drive Shaft
Drive Shaft
2. Mount on the front axle drive shaft.
Mount on it and screw up the four bolts according to the
specified torque.
Fastening torque
(74
5)N
m
3. Connect the universal joint flange fork of the rear axle
drive shaft on the relative differential flange.
(a) Align the assembly marks on flanges and connect the
flanges with four sets of bolt and nut, and
(b) Tighten the sets of bolt and nut according to the specified
torque.
Fastening torque
(74
5)N
m
4. Mount the center support bearing on the frame beam
(three joint type)
(a) Use two mounting bolts to mount the center support
bearing on the frame beam and screw up them manually.
(b) Check the bearing seat, which shall be vertical with the
drive shaft, and adjust the bearing seat when necessary.
(c) Check the central line of the central bearing. The central
line of the central bearing shall be the same with that of
the bearing seat when vehicle is in the non-loaded stage.
(d) Adjust the bearing seat if necessary, and
(e) Screw up the mounting bolts according to the specified
torque.
Fastening torque
(40
5)N
m
assembly mark
forward

SA-1
Suspension System and Automobile Axle
Page
Troubleshooting .......................................................... SA-2
Alignment of Front Wheel ............................................ SA-3
(Dr/2WD)
Front Wheel Hub and Steering Knuckle ...................... SA-10
Front Wheel Hub ..................................................... SA-11
Steering Knuckle ..................................................... SA-14
Front Suspension ........................................................ SA-16
Ball Stud .................................................................. SA-17
Torsion bar .............................................................. SA-19
Lower Arm and Vibration Damper ........................... SA-21
Upper Arm ............................................................... SA-24
Guide Level ............................................................. SA-26
Lateral Stabilizer ..................................................... SA-27
(SF/2WD)
Front Wheel Hub and Steering Knuckle ...................... SA-28
Front Wheel Hub ..................................................... SA-29
Steering Knuckle ..................................................... SA-32
Front Suspension ......................................................... SA-36
Ball Stud ................................................................... SA-37
Torsion bar ............................................................... SA-38
Lower Arm and Vibration Damper ............................ SA-39
Upper Arm ................................................................ SA-42
Guide Level .............................................................. SA-43
Lateral Stabilizer ....................................................... SA-43
(SF/4WD)
Front Wheel Hub and Steering Knuckle ....................... SA-44
Front Wheel Hub ...................................................... SA-45
Steering Knuckle ..................................................... SA-49
Constant Speed Drive Shaft ........................................ SA-54
Front Speed Reducer .................................................. SA-57
Change of Oil Seal of Driving Bevel Gear Of
Front Speed Reducer ............................................. SA-57
Dismantle of Front Speed Reducer ......................... SA-61
Change of Axle Shaft Oil Seal ................................. SA-63
Disassembly and Assembly of Front Speed Reducer.... SA-65
Assembly of Front Speed Reducer ......................... SA-74
(Back)
Rear Axle Shaft ........................................................... SA-79
Rear Speed Reducer .................................................. SA-83
On-vehicle Change of Oil Seal of Main Teeth ......... SA-84
Dismantle of Rear Speed Reducer .......................... SA-85
Disassembly of Rear Speed Reducer ..................... SA-85
Assembly of Rear Speed Reducer .......................... SA-89
Mount of Rear Speed Reducer and
Differential Assembly .............................................. SA-94
Rear Differential .......................................................... SA-95
Rear Suspension ......................................................... SA-97
SA

SA-54
Constant Speed Drive Shaft
Element figure
Suspension System and Automobile Axle (SF/4WD)
Constant Speed Drive Shaft
axially movable three-ball
universal joint
triangular joint
mobile joint
snapping ring
extensible-end large
gripping hoop
extensible-end
dust cover
extensible-end small
gripping hoop
shaf
fixed-end small gripping hoop
fixed-end large gripping hoopfixed-end dust cover
steel retainer ring
ball-cage type universal joint
inner oil seal- drive shaft
front drive axle shaft
sleeve assembly



Parts that cannot be reused after being used
N
M
specified torque
SF4WD
front speed reducer and
differential assembly
constant speed
drive shaft