TF-32Transfer BoxWashing, Checking, Up-Keeping and Exchanging (Attachment for Inspection
Maintenance or Change of Parts
Pump shell Check to see whether there is pitting corrosion
or step slippingAbandon it in case it is seriously damaged or
worn
Output shaftCheck the spline, check the surface that matches
with bearing and check the distortion according
to inspection paragraphRefer to the spline inspection of inspection
paragraph;
Refuse to use the one with pitting corrosion or
damage;
Refuse to use the one that is bending or poor in
round bouncing.
Deceleration hubCheck the spline of chain sprocket and check the
wear or damage of the location where matches
with the toggle fork according to the
inspection paragraphRefer to the spline inspection of inspection
paragraph; refuse to use the one with step slid-
ing or damage.
Front output shaftCheck the surface where matches with the
bearing;
Check the spline according to the inspection:
paragraphRefuse to use the one with pitting corrosion or
damage
Input shaft Check the spline according to the inspection
paragraph
Check the distortionRefer to the spline inspection of inspection
paragraph;
Refuse the one that is bending or poor in round
bouncing.
Thrust washer and
thrust discCheck the pitting corrosionRefuse to use the one with pitting corrosion or
damage
Sun wheelCheck the gear teeth and spline according to the
inspection paragraphRefer to the gear teeth inspection and spline
inspection of inspection paragraph.
Planetary mechanism
assemblyCheck the gear teeth according to the
inspection paragraph;
Check the wear and looseness of the planetary
gear pin; check the wear of thrust gasketRefer to the gear teeth inspection of
inspection paragraph;
If any step sliding or pitting corrosion is found,
refuse to use it
Electric shifting camCheck to see whether there is step slipping or
pitting corrosionIf any step sliding or pitting corrosion is found,
refuse to use it
Shift guide shaftCheck to see whether there is step slipping or
pitting corrosion
Check the distortion situationIf any step sliding or pitting corrosion is found,
refuse to use it
Refuse to use the bending one
Planetary gear ringCheck the match performance of it with the
transfer box housing
Check the gear teeth according to the
inspection paragraphCheck the transfer box housing assembly to see
whether the gear ring is loose or not in the
housing
Refer to the gear teeth inspection of
inspection
paragraph
Transfer box housingCheck the holes matches with the bearingAbandon the one with pitting corrosion or
damage.
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-2
Troubleshooting
Suspension System and Automobile AxleTroubleshooting
Change the tire or inflate to the proper pressure
Balance the wheels
Change vibration damper
Check Alignment of Front Wheel
Change or adjust the wheel bearing
Check ball joint) or liner
Tighten or change steering linkage
Adjust or repair the steering device
Discharge the oil and change with new one
Check the wandering clearance
Check the gears
Change the bearing
Change the bearing
Tighten or change the bearing Trouble Causes
Inspection items
Body wandering/body
draggingTire wear or improper air inflation
Incorrect alignment of front wheel
Over-tightened wheel bearing
Part looseness or damage of front/rear sus-
pension
Wear or looseness of steering rod system
Poor connection or damage of steering de-
viceInflate the tire to the proper pressure or change
the tire.
Check the situation of alignment of front wheel
Adjust the wheel bearing
Tighten or change the suspension element
Tighten or change the steering rod system
Adjust or repair the steering device
Body sink Overloaded vehicle
Wear of vibration damper
Poor spring performanceCheck the loading mass
Change vibration damper
Change spring
Left-right vibration/up-
down bouncingImproper air inflation
Bending or damaged lateral stabilizer
Vibration damper wearInflate the tire to suitable pressure
Change stabilizer
Change vibration damper
Front wheel vibration Tire wear or improper air inflation
Imbalance of wheels
Vibration damper wear)
Improper Alignment of Front Wheel
Wheel bearing wear or improper adjustment
Ball joint or liner wear
Steering linkage looseness or wear
Poor adjustment or damage of steering mecha-
nism
Abnormal tire wear Improper air inflation
Vibration damper wear
Poor Alignment of Front Wheel
Suspension system wearInflate the tire to the proper pressure
Change vibration damper
Check the Alignment of Front Wheel
Change suspension element
Speed reducer leakage Over-high oil level or improper oil quality
Oil seal wear or damage
Flange looseness or damageDischarge the oil for change
Change oil seal
Tighten or change the flange
Noise inside the
axleNoise inside the axleOver-low oil level or inferior oil quality
Over-large wandering clearance between
driving bevel gear and driven bevel gear
Wear and disintegration of driving bevel
gear and driven bevel gear
Bearing wear of driving bevel gear
Bearing wear of rear axle shaft
Bearing looseness or wear of speed reducer
SA-3Suspension System and Automobile AxleAlignment of Front Wheel (Dr SL SK SY SJ)
Alignment of Front Wheel
(Dr SL SK SY SJ)
1. Inspection should be conducted for the following items to
remove the trouble
(a) Check the tire abrasion and air inflation situation
Tire inflation pressure:
Front (2200)kPa
Back (2400)kPa
(b) Check the front wheel bearing to see whether it is loose.
(c) Check the front suspension to see whether it is loose.
(d) Check the steering driving device to see whether it is
loose, and
(e) Check the front vibration damper work to see whether it
is loose.
2. Measure the ground clearance of the chassis.
Chassis ground clearance:
Dr295
0+5mm
SL SK(2552)mm
SY(3102)mm
SJ(2951)mm
If the chassis ground clearance of the vehicle is sub-standard,
push down the body or raise it for a trial adjustment, if fails,
check the spring or suspension element to see whether they are
normal.
Remarks: adjust the chassis ground clearance to a specified
value before checking the Alignment of Front Wheel
parameters.
3. Mount on the four-wheel locating device.
The mount should be conducted according to the manufacturerís
instructions.
SA-4Suspension System and Automobile AxleAlignment of Front Wheel (Dr SL SK SY SJ)
5. Adjustment for inner tilt angle of kingpin, outer tilt angle
of front wheel and back tilt angle of kingpin
Item
Inner tilt
angle of
kingpin
Outer tilt
angle of
front
wheelApplicable vehicle type
Dr SL SK SY
SJ
Mechanic
steeringDr SL SK SY
Power
steeringDr
SL SK SY
SJ
Back tilt
angle of
kingpinMechanic
steeringDr SL SK SY
Power steer-
ingDr SL SK SY
SJ93045
1452
03020
01010
02010
03015
24515
315Location parameter
4. Adjust the wheel angle
Take apart the limit bolts of the steering knuckle to check the
steering angle A of inner wheel.
Inner wheel steering angle
Dr SL SK SY ( 3640)
SJ ( 3234)
Remark: The wheel should not contact the body or brake hose
when the steering wheel reaches the limit position.
In case the steering angle of inner wheel doesnít conform to the
standard value, adjust the wheel angle through adjusting the
limit bolts of the steering knuckle.
Fastening torque(900)Nm(SJ)
If the wheel angle fails to be adjusted within the standard value,
change the weary or damaged parts of steering system.
If the tilt angle fails to fall within the specified values, make an
adjustment through adding or reducing the gaskets on the
location of upper arm.
Gasket thickness: 3.0, 2.0 and 1.0mm
Once the gasket thickness increases by 1mm, the outer tilt
angle of wheel will change by 7', while the back tilt angle of
kingpin will change 20'.
After the wheel outer tilt angle and the back tilt angle of kingpin
are adjusted, if the inner tilt angle of kingpin still fails to the
specified value, check the steering knuckle or front wheel to
see whether they are bending or loose.
150-20
adjusting bolt
outer tilt
angle of
front wheel inner tilt angle of kingpin
back tilt angle of
kingpin
front AB AB
HPM
SA-5
7. Check the sliding measuring situation.
Check the sliding situation with the sliding measuring tester.
Sliding measuring value: .5m/km
push forward the vehicle;
forward
A=BB A
6. Wheel toe-in adjustment
(a) Verify that each wheel has been located forward in a line.
(b) Mark the tire center at the bearing height on the tread of
left and right tire, and measure the distance between the
marks on left and right treads.
(c) Push forward the vehicle until the mark on the back tread
of tire moves to the front.
Remark: the toe-in measurement should be conducted from the
same spot at the same height.
(d) Measure the distance between the two marks on the front
of two treads.
Toe-in value: (0-2)mm
(e) Loosen the clamping bolts of connecting pipe.
(f) Adjust the toe-in angle through the approach according to
which rotate the left and right drag rod tube by a same
angle.
Remark: check the lengths of the two drag rods to see whether
the two rods are same in length.
Length error of the left and right drag rod should not
be larger than 2.0mm.
(g) Tighten the clamping bolts.
Fastening torque(20) Nm
(h) Locate the split pin well.
Suspension System and Automobile AxleAlignment of Front Wheel (Dr SL SK SY SJ)
SA-6Suspension System and Automobile AxleAlignment of Front WheelAlignment of Front Wheel (SF)
Alignment of Front Wheel
(SF)
1. The following items should be checked to remove the
troubles.
(a) Check the tire abrasion and the air inflation to see it is
suitable or not.
Tire inflation pressure: (2500)kPa
(b) Check the front wheel bearing to see whether it is loose.
(c) Check the front suspension to see whether it is loose.
(d) Check the steering driving device to see whether it is
loose, and
(e) Check the front vibration through elastic force test to see
whether it is normal in performance.
2. Height adjustment of vehicle
Adjust the vehicle height to the standard value so as to make
the Alignment of Front Wheel inspection.
A-B-58 5mm
A: The height of steering knuckle shaft center.
B: The center height of the adjusting cam bolt at front end
The standard value for the unloaded height is: the
difference of the center height of drive shaft climax and
the front adjusting cam bolt is 58.5mm.
3. Mount on the four wheel locating device
This approach should be conducted according to the detailed
instruction of the equipment manufacturer.
4. Adjust the outer tilt angle of front wheel and the back tilt
angle of kingpin
The outer tilt angle of front wheel: 05'0'
The back tilt angle of kingpin: 20'0'
Outer inclination of front wheel:
BA
the outer tilt angle of
front wheelthe back tilt angle
of kingpin
front
SA-7Suspension System and Automobile AxleAlignment of Front WheelAlignment of Front Wheel (SF)
In case the outer tilt angle of front wheel or the back tilt angle
of kingpin fails to conform to the specified value, adjust the
cam forward or backward may amend them.
5. Wheel angel adjustment
Take apart the limit bolt cap of the steering knuckle to check
the inner wheel steering angle A.
The inner wheel steering angle: =32
Notice:The wheel should not touch the body brake hose
when the steering wheel is rotated to the bottom.
In case the max steering angle is not in the conformity with the
standard value, adjust the wheel angle through the limit bolts
of steering knuckle.
In case the wheel angle still fails to fall within the standard
range, make a inspection and change the weary and damaged
steering mechanism parts.
6. Wheel toe-in adjustment
Adjust the wheel toe-in according to the following approach
(a) Raise or reduce the vehicle until the suspension stands in
balance.
(b) Push the vehicle on the ground 5 meters forward under
the condition that the front wheels locate forward in a
line.front cam adjustment
rear cam adjustment
reduce increaseincrease reduce
A
B
A B
front