Preface
With the increase of automobile demand in China, our automobile industry also experiences a rapid
development. The trucks including SUV, manufactured by Great Wall Motor Co., Ltd, which are sold all over
China, are in the leading place in terms of their sales volume, in order to satisfy the demands of various maintain-
ing staff, technicians and managing staff of Changcheng Co., Ltd, we compile this maintenance manual accord-
ing to the latest technological data. This manual covers six vehicle models including Deer, Safe, Sailor, Sing, So
Cool and Pegasus, its main content includes:
Part I is general introduction, which introduces the application index of this manual.
Part II introduces the chassis system, which mainly includes the technologies of dismantle, inspection,
adjustment, repairing, assembly and mount of the clutch, gear box, transfer box, drive shaft, suspension system
and automobile axle, braking system and steering system, etc. each operation approach is illustrated with figure,
which not only presents the maintenance procedure, but also clearly describes the technical requirements and
application limit.
Part III introduces the electric system and air-conditioning system of the automobile body, which mainly
covers such items as the location and content of protective box, power supply system, starting system, lighting
system, combination instrument, backup radar system, wiping and washing system, center control locking and
power window system, acoustical equipment system, full wire harness and air-conditioning system, etc. Electric-
ity diagrams for those electric systems are given in this manual so as to facilitate the maintaining technicians to
find out the problem easily and quickly.
Part IV introduces the external and internal body decoration, which mainly covers the dismantling, inspect-
ing and assembling requirements of the engine cover, front and rear doors, adhesive strip of body collision
avoidance, wheel shield, wrapping angle of wheel-shield and exterior trim panel, front and rear windshields,
side-window glass, rear-door glass, rear platform of cargo compartment, rear door, instrument panel, safety belt,
seat, tail-fin, luggage rack, and reserve tire bracket etc. The dimensions of vehicle body and frame are also given
to maintaining staff for reference during their repairing.
During the narrations of each part, items such as troubleshooting, maintenance notice, maintenance data
and application limit, fastening torques of bolts and nuts for special purpose, SST, SSM and lubricant materials
and so on are also introduced. Various maintenance data are briefed in attachment for reference.
Altogether, this manual is comprehensive in content, visual in illustration, clarifying in requirement and
plain in language. It can be referred by the maintaining staff, technicians and professional managing staff.
Even though we try our best to compile this manual in a strict earnest manner, we cannot guarantee that all
contents in this manual are correct. Therefore, users shall not put forward any claim with Great Wall Company
according to this manual; we are not in the position to hold the responsibility for the loss caused by usage of this
manual. Due to our limited knowledge, it is unavoidable to find error in this manual, any criticism and correction
from you is welcomed.
The final explanation power for this manual is subject to Great Wall Motor Co., Ltd
Compiler
May 2006
Service manual for
chassis and body
GeneralIN
ClutchCL
Gear boxMT
Transfer boxTF
Drive shaftPR
Suspension system and automobile axleSA
Braking systemBR
Steering systemSR
Body electric systemBE
Air-conditioning systemAC
Vehicle bodyBO
Maintenance and Up-keepingA
Special ToolB
CL-2ClutchTroubleshooting
Troubleshooting
Trouble Causes Repairing approaches
Difficulty in gearshift
or non-gearshiftOverlarge free stroke of clutch pedal
There is air in clutch pipe
Failure of clutch brake-wheel cylinder
Failure of clutch master cylinder
Overlarge clutch pendulum difference due to incorrect mounting, the
friction liner is stained with oil or is breaking
There is dirty or adhesive materials on spline of input shaft or clutch rib
Failure of clutch pressure plateAdjust the free stroke of pedal
Exhaust the air in clutch pipe
Change the clutch brake-wheel cylinder
Change the master cylinder
Check the clutch rib
Repair according to requirement
Change the clutch pressure plate
Disengagement of gear
box or clutch slipAbrasion of clutch guide shaft
Insufficient free stroke of clutch pedal
The friction liner of clutch rib is stained with oil or is worn
Failure of clutch pressure plate
Seize up of separation forkChange the guide shaft
Adjust the free stroke of pedal
Check the clutch rib
Change the clutch pressure plate
Check the separation fork
Clutch seize-up or
shakingThe friction liner of clutch rib is stained with oil or is worn
Failure of clutch pressure plate
Looseness of engine seatCheck the clutch rib
Change the clutch pressure plate
Repair according to requirement
Looseness of clutch
pedalThere is air in clutch pipe
Failure of clutch brake-wheel cylinder
Failure of clutch master cylinderExhaust the air in clutch pipe
Change the clutch brake-wheel cylinder
Change the master cylinder
Over-loud clutch noiseSeize up of separation fork;
Abrasion or stained spot of separation bearing
Abrasion of guide bearing
Parts looseness in clutch pressure plateRepair according to requirement
Change the separation bearing
Change the guide bearing
Change the clutch pressure plate
CL-7ClutchClutch Cluster
Clutch cluster
Element drawing
flywheel
clutch rib
clutch pressure plate
separation
bearingclamp separation fork
dust cover
30
specified torque
N*m
Disassembly of clutch cluster
1. Tear down the gear box;
Remark: do not leave the gear oil in drying
2. Tear down the clutch pressure plate and the clutch rib
a) Make aligning marks on the clutch pressure plate and the
flywheel.
b) Loosen the fixing bolts gradually until the spring tension
is released;
c) Tear down the fixing bolts to pull out the clutch pressure
plate and clutch rib.
3. Tear down the bearing and separation fork from the gear
box;
a) Tear down the clamp to pull out the bearing;
b) Tear down the separation fork and dust cover.
CL-10Clutch Clutch Cluster
3. Check the alignment of the diaphragm spring end.
Check the alignment of diaphragm spring end with SST.
Max dislocation: 0.5mm
if the difference is more than the specified value, adjust the
alignment of diaphragm spring end with SST.
4. Coat the lithium base grease;
Coat the lithium base grease on the following parts:
Contact spot of separation fork and bearing
Contact spot of separation fork and push-rod;
Support spots of separation fork
Spline of clutch rib
5. Encase the dust cover, separation fork, separation bearing
seat and bearing into the gearbox;
6. Mount the gearbox.
SST
MT-1
Gear box
page
Notice ........................................................................... MT-2
Troubleshooting ........................................................... MT-3
Dismantle of Gear Box ................................................. MT-4
Mount of Gear Box ....................................................... MT-7
Disassembly of Gear Box ............................................. MT-10
Input Shaft Assembly ................................................... MT-18
Element Drawing ...................................................... MT-18
Inspection on Synchronizing Ring ............................ MT-18
Bearing Change ....................................................... MT-18
Output Shaft Assembly ................................................. MT-20
Element Drawing ...................................................... MT-20
Disassembly of Output Shaft Assembly .................... MT-21
Inspection on Output Shaft Assembly ...................... MT-23
assembly of Output Shaft Assembly ......................... MT-25
Countershaft Assembly And Reverse Idle Gear
Assembly ...................................................................... MT-29
Element Drawing ...................................................... MT-29
Disassembly Inspection and Assembly of
Countershaft Assembly ............................................. MT-29
Assembly of Reverse Gear ...................................... MT-31
Rear Housing assembly ............................................... MT-33
Element Drawing ...................................................... MT-33
Change of Oil Seal ................................................... MT-33
Change of Shaft Bush .............................................. MT-33
Inspection on and change of Position-Limit
Mechanism Cluster ................................................... MT-34
Front Cover of Bearing ................................................. MT-36
Element Drawing ...................................................... MT-36
Change of Oil Seal ................................................... MT-36
Assembly of Gear Box ................................................. MT-37
MT
MT-2Gear BoxNotice
Notice
Notice for disassembly and assembly of gearbox
Notice shall be taken during the gear disassembly and assembly on the soft handle for the parts, especially
for the coupling faces so as to avoid the collision; each part shall be put down in order to avoid the missing
or mistaking.
Notice shall not only be taken in the aforesaid aspects, but also in the following items
1. Wash all parts before assembly (rubber fittings and washers excluded).
2. Various oil seals, retainer rings for shafts, spring-type pins shall not be reused.
3. Lubricating oil shall be coated on the friction surfaces, and lubricating grease shall be coated on the lips
of oil seals.
4. Rolling elements shall not be used to transfer the pressure during the various bearing assembly.
5. Lip-type oil seal must not be sloping when assembling it.
6. The openness at the two ends of the spring collar shall be misfit when assembling the component
elements of the synchronizing instrument, and
7. No part is allowed to leak the lubricating oil when the gearbox locating at its working place.
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