Page 174 of 484
SA-63
1. Tear down the front long semi-axis and the front minor
half-shaft
Pull out the front long and minor semi-axis from the front
speed reducer with tool.
2. Tear down the front drive axle shaft sleeve and screw off
the bolts connecting the half-shaft sleeve.
3. Tear down the oil seal - front half-shaft:
Tear down the oil seal-front half-shaft with the special service
tool.
Change of Axle Shaft Oil Seal
snapping ring
front minor half-shaft
front speed reducer and differential
oil seal-front half-shaft
front long
semi-axis
snapping ring
88
NMspecified torque
Parts that cannot be reused after being used)
Suspension System Automobile Axle (SF/4WD)Front Speed Reducer (Change of Axle Shaft Oil Seal)
Page 175 of 484
SA-64
5. Mount on the upper front drive axle shaft sleeve,
Coat the bolt thread with thread locking agent.
Fastening torque88Nm 4. Mount on the new oil seal-front half-shaft:
Press in the new oil seal with the special service tool until it
flush with the outer ending of the oil seal, coat moderate
lubricant on the lips of the oil seal.
6. Mount on the front long semi-axis and the front minor
half-shaft.
(a) Mount the new snapping ring on the half-shaft.
(b) Mount on the long semi-axis and the minor half-shaft
with the special service tool.
Suspension System Automobile Axle (SF/4WD)Front Speed Reducer (Change of Axle Shaft Oil Seal)
Page 176 of 484
SA-65
Disassembly and Assembly of Front Speed Reducer
Element figure
front minor half-shaft
snapping ringbearing 31306 front speed
reducer shell
oil-guard trayflange and dust cover
driving bevel gear oil seal
jacketoil seal-front half-shaft
Parts that cannot be reused after being used
s pecified torqueNM
140-210 bearing 32307
driving bevel gear oil seal
speed reducer coveradjusting washer
bearing 50KB801
47
cap-differential
bearing
78
lock plate adjusting washer
half axle gear thrust
gasket
planetary gear shaft
half-axle gearplanetary gear stop gasket
planetary gearaxle driven bevel gear front differential housing
adjusting gasket
pin
70-90 retainer ring
front long semi-axisbearing B36Z-10
oil seal-front half-shaft
adjusting washer
snapping ring
Suspension System Automobile Axle (SF/4WD)Front Speed Reducer (Disassembly and Assembly of Front Speed Reducer)
Page 177 of 484

SA-66
Disassembly of Front Speed Reducer
1. Tear down the speed reducer cover:
Screw off the eight bolts connecting the speed reducer cover.
2. Tear down the front long semi-axis and the front minor
half-shaft:
Tear down the front long semi-axis and the front minor half-
shaft from the speed reducer assembly with the special service
tool.
3. Tear down the front drive axle shaft sleeve
Screw off the four bolts connecting the front drive axle shaft
sleeve.
4. Tear down the oil seal ó front half-shaft;
Tear down the oil seal ófront half shaft with the special service
tool.
5. Check the swing difference of the axle driven bevel gear;
Run the flange to measure the axle driven bevel gear with the
dial-indicating lamp.
Swing difference)0.07mm
Max swing difference: 0.07 mm
In case the swing difference is more than 0.07 mm, change the
compete package of driven bevel gear.
Suspension System Automobile Axle (SF/4WD)Front Speed Reducer (Disassembly and Assembly of Front Speed Reducer)
Page 179 of 484
SA-68
10. Tear down the inner race of bearing 31306 with SST;
If the bearing is damaged, change with a new bearing.
11. Tear down the cap-differential bearing.
12. Take out the differential.
13. Take down the outer race of bearing 50KB801 and mark
clearly the left and right parts to avoid of confusion during
reassembling. 9. Tear down the driving bevel gear oil seal and the oil-
guard tray:
(a) Tear down the oil seal from the driving bevel gear with
SST.
(b) Take out the oil-guard tray.
right
left
left
Suspension System Automobile Axle (SF/4WD) Front Speed Reducer (Disassembly and Assembly of Front Speed Reducer)
14. Tear down the adjusting gaskets and clearly mark the left
and right to avoid of confusion during re-assembling.
right
Page 185 of 484

SA-74
4. Select the adjusting washer ñdriving bevel gear accord-
ing to the experience, and cover it on the driving bevel
gear; and mount the inner race and roller assembly of
bearing 32307 on the driving bevel gear by pressing.
5. Mount the adjusting washer and sleeve on the driving
bevel gear, and encase it in the front speed reducer cell
through the flange along with the spline, and screw on
the nuts.
6. Screw up the main-tooth nuts to the specified torque with
the SST.
Fastening torque(17535)Nm
7. Measure the preload on the driving bevel gear bearing
with torque tester :
New bearing(1.2-1.7)Nm
Old bearing(0.9-1.3)Nm
Assembly of Front Speed Reducer
1. Clean the front speed reducer shell; press the outer
races of bearing 31306 and bearing 32307 to mount
them in the speed reducer shell.
2. Mount he inner race and roller assembly of bearing
31306 as well as the oil-guard tray in the front speed
reducer shell, then press on the driving bevel gear oil
seal with SST.
Notice: coat a little lubricant on the lip open of the oil seal
before encasing it, and the oil seal that is encase in the
front speed reducer shell should be 1.5 mm away from
housing faces.
3. Encase the flange and dust cover in the front speed
reducer through the lip open of oil seal and press it by
hand.
Suspension System and Automobile Axle (SF/4WD) Front Speed Reducer (Assembly of Front Speed Reducer)
Page 188 of 484
SA-77
heel end engagement tooth top engagement
Select the adjusting gasket that make the main teeth contact
closer with the axle driven bevel gear.
toe end engagement tooth top engagement
Select the adjusting gasket that make the main teeth contact farther with the axle driven bevel gear.
(d) Tear down the bearing 32307 from the driving bevel gear
and change the adjusting washer.
(e) Re-measure the total preload of the front speed reducer
and the situation of teeth engagement until they satisfy
the requirement.
16. Rivet the main-tooth nut;
17. Mount on the new oil seal ó front half-shaft;
Press in the new oil seal with the SST until it flush with the
outer face of the oil seal, coat the moderate lubricant on the
position of oil seal and on the lip open of oil seal.
Suspension System and Automobile Axle (SF/4WD)Front Speed Reducer (Assembly of Front Speed Reducer)
Page 190 of 484
SA-79
Rear Axle Shaft
Element figure
rear axle housingO rubber O-ring sealrear brake
brake drum
inner oil seal seat of
rear wheel bearingbearing seat
oil seal of rear
wheel bearinglinerhalf-shaft
grooved ball
bearing
rear brakeoil-guard tray
Parts that cannot be reused after being used
Suspension System and Automobile Axle (rear)Rear Axle Shaft
flat steel retainer ring for shaft