Page 257 of 425

f. Clean the surface of differential housing; use the brass rod to
install the driven bevel gear on the differential housing.
Caution: It should align the marked assembly mark when
install the driven bevel gear and knock it in uniformly in
circumference ; it should remove the cooper chip in time if it
is adhered on the driven bevel gear.
g. Coat the fastening bolt of driven bevel gear with the screw
lock agent, then tighten it to the specified torque.
Specified tightening force: 80-95N
m
Caution: It should be in the diagonal sequence to tighten the
bolt and tighten it for little, then tighten it to the specified
torque uniformly.
h. On press machine, use the special tools to press the inner
race of bearing into the bearing position on both sides of
differential housing.
i. Place an adjusting shim in the position of front reducer
housing side bearing near exterior.
j. Install another adjusting shim and the other side bearing outer
race in the front reducer housing with thedifferentialassembly
k. Install two bearing glands, left and right and use the wrench
to tighten the bolt to the specified torque.
Specified torque : 90-115N.m
special tools
special tools
bearingbearing
adjusting shimadjusting
shim
Page 258 of 425

1.Rotate the driven bevel gear, check the runout of
driven bevel gear.
Max. Runout: 0.07mm
Assembly of front reducer assembly
1.Install the adjusting washer in the drive bevel gear,
install the big bearing inner race of drive bevel gear
by press.
2. Clean the front reducer housing, install the outer
race of big and small bearing on the reducer housing
by press..
3. Install the drive bevel gear into the front reducer
housing, then install the washer, spacer and small
bearing inner race.
4.Use the special tools to install the drive bevel gear
oil seal.
Caution: It should coat the lip with the oil seal
lithium base grease before install it and the rear
surface of rear oil seal should flush with the top of
front reducer housing after knocked in.
5. Install the drive gear flange and dustproof cover
assembly.
(Refer to “Replacement of Drive Bevel Gear Oil Seal”)
6.Use the special tools to tighten the drive gear nut
to the specified torque; the nut should be precoated
with the lithium base grease.
specified torque : 140-200N
m
7. Use the torque measuring meter to measure the
pre-applied load of big and small bearing of drive
bevel gear.
Range of pre-applied load: 1.2-1.7N
m
special tools
Page 259 of 425
8. Place the differential assembly on the corresponding
position of front reducer housing.
9.Select an adjusting shim and insert it in a side of
side bearing outer race; push the differential assem-
bly to the side with adjusting shim.
10. Use the dial indicator to measure the gear side
clearance of driven bevel gear and drive bevel gear;
select out the adjusting shim in the side which meets
the rational clearance of 0.15mm.
11.Measure the thickness of the adjusting shim.
12. After select out one side adjusting shim, then
select theadjusting of another side according to that
the theoreticthickness of the adjusting shimofanother
side equals to subtracting the thickness of selected
shim and oppositiondistance L2 between outer race of
two side bearings of differential assembly from the
opposition distance L1 between two side bearings of
front reducer housing.
Page 260 of 425

13. Place an adjusting shim in the position of front
reducer housing side bearing and close to exterior.
14. Install the other adjusting shim and the bearing
outer race of another side with the differential
assembly into the front reducer housing.
Remarks: Ensure the selected adjusting shim has
not gap with front reducer housing.
15. Rotate the driven bevel gear to make the differ-
ential assembly closed to the front reducer housing.
16. Use the dial indicator to measure the tooth side
gap between the drive and driven bevel gear.
The rational range of gap is: 0.15-0.25mm.
If the measured gap is beyond the range, then adjust it by
adding or reducing the thickness of shim. ( When add in
one side, the other side should be reduced with same
thickness)
Caution: Ensure the selected adjusting shim is
without clearance form front reducer housing.
17. Adjust the pre-applled axial load of side bearing.
a. Remove two adjusting shim, remeasure the thickness of two
adjusting shims.
b. Install the new adjusting shim with thickness 0.06-0.09mm
more than that of removed adjusting shim, then install it with
the differential in the reducer housing.
c. Remeasure the tooth side clearance between the drive bevel
gear and driven bevel gear.
Rational range of clearance: 0.15-0.25mm
Remarks: If the measured gap is beyond the range, then adjust
it by adding or reducing the thickness of shim. ( When add in
one side, the other side should be reduced with same
thickness)
Caution: Ensure the selected adjusting shim has not the
clearance with the front reducer housing.
18. Install the bearing gland of both sides and use
the wrench to tighten it to the specified torque.
specified torque : 90-115Nm
Remarks: Distinguish the left and right during assembly.
Page 261 of 425
19. Use the torque measuring meter to measure the
total pre-applied load of front reducer.
specified torque : 1.8-2.4Nm
sound contactlarge end contact
toe contact
select the adjusting washer which can make the drive gear close to the
driven bevel gear
select the adjusting washer which can make the drive
gear away form the driven bevel gear rsmall end contact
dedendum contact
20. Check the meshing mark of drive and driven
bevel gear.
a. Paint 3-4 teeth with the red lead in three different positions
of driven bevel gear.
b. Hold the flange of drive gear; rotate the driven bevel gear in
clockwise and anticlockwise.
c. Check the contacting condition of gear tooth.If the meshing
mark of drive and driven bevel gear does not consist with
thatshown in figure, it should select the proper adjusting
washer for modification according to the detailed form of
meshing mark.
convex of drivenconcave of driven bevel
Page 262 of 425
d. Remove the drive bevel gear and use the special toolsto remove
the large bearing of drive bevel gear beforereplacethe adjusting
washer.
e. Insert the new adjusting washer and usethespecial tools to
press in the large bearing of drivebevel gear.
f. Place the adjusting washer above the large bearing on the
drive bevel gear, install the spacer in the reducer housing;
install the drive gear flange andtighten the nut to the specified
torque.
g. Remeasure the pre-applied load of drive gear bearing clearance
and the total pre-applied load of reducer; ensure it meets the
requirement.
21. Use the dial indicator to measure the axial and
radial run-out tolerance of . Drive bevel gear flange.
Max. Axial runout : 0.1mm
Max. Radial run-out tolerance: 0.1mm
Remarks: It should check the big and small bearing of drive
bevel gear when the runout is more than 0.1mm.
22. Rivet the nut of drive bevel gear.
Page 263 of 425

23. Use the bolt coated with screw lock agent toconnect
the clump weight bracket welded assembly to the front
reducer housing and tighten it to the specified torque.
Specified torque : 20-26Nm
24.Use the bolt coated with screw lock agent to
connect the clump weight assembly to the clump
weight bracket assembly and tighten it to the speci-
fied torque.
Specified torque : 20-26Nm
The amount of screw lock agent could cover the screw.
25.Use the pneumaticto screw two studs on the correspon
ding screw hole on the front axle housing until the
limitation.
26. Coat the plane of front axle housing with the
continuous 1596 silicon rubber plane sealant, scrape
it to level by plate.
Caution: Avoid the screw hole when paint the sealant; prevent
the sealant enters into the screw hole.
27. Install the front reducer assembly on the front
drive axle housing and screw on the hexagon bolt and
spring washer combination; cap the spring washer on
the stud, tighten the nut to the specified torque.
(The screw of all bolts should be precoated with screw lock agent)
The specified tightening force of hexagon bolt and spring washer
combination, stud and nut should be: 18-25N
m
Caution: The bolt should be tightened in diagonal sequence
evenly; check the reducer housing and axle housing contacting
surface for gap; check the sealant from break. It should
remove the reducer for reinstallation if has the gap or break.
28. Screw the oil filling plug with washer on the front
drive axle.
Caution: Do not tighten it.
29. Screw the oil drain plug on the front drive axle.
Specified torque : 30-35Nm
30. Use the special tools to install the major semiaxle
oil seal in the front axle tube.
Caution: Precoat the lip of oil seal with thin lithium base grease
and the oil seal should be installed in position.
(It should coat the screw of the stud which is screwed
in the front axle housing with the screw lock agent, and
the amount should be just can cover the screw which is
screw in the front axle housing)
Caution: The position of stud should consist with that before
disassembly.
Page 264 of 425
31.Use the special tools to install the needle bearing in
the major semiaxle.
32.Use the special tools to install the major semiaxle
bearing by press..
33. Use the circlip pliers to install the circlip to clamp
the bearing inner race of major semiaxle.
34.Insert the spline on small end of major semiaxle
into the spline of front reducer half axle gear; use
the brass rod and hand hammer to knock the major
semiaxle into the front reducer.
Caution: Does not damage the inside needle bearing.
On spline of large end of major semiaxle when
knock in the major semiaxle.
35.Use the circlip pliers to install the circlip in the
flange and clamp the major semiaxle bearing outer
race.
36. Push the mechanical wheel of separator into
theneedle bearing inner race in major semiaxle until
can not move.
special tools
special tools
special tools