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SA-47
Assembly of Front Wheel Hub
1. Mount on the inner race and roller assembly of front hub
bearing as well as the oil seal of front hub.
Coat the lithium base grease of (4-5)mm on the inside surfaces
of the bearing outer race and the front wheel hub, put in the
inner race and roller assembly of front hub bearing (inner),
then plaster the lubricant. Plaster a little lubricant on the lips of
front wheel hub oil seal, and finally tap the front hub in place
with special service tool.
Notice: Do not plaster the lubricant on the face of front
brake disc.
2. Mount the inner race of front hub bearing (outer) and
roller assembly
Coat 45 mm of lithium base grease on the outer race of
bearing, and then put the inner race of front hub bearing (outer)
and roller assembly in it, finally plaster with lubricant.
(c) Loosen the steering knuckle nut to ensure the front brake
disc can run freely. Screw up the steering knuckle nut
again to the specified torque.
Fastening torque25Nm
(d) Mount on the lock plate and mount on another steering
knuckle nut.
Fastening torque60Nm 3. Mount the front wheel hub on the steering knuckle
Coat a little lubricant on the oil seal of steering knuckle, and
then mount the front wheel hub and front brake disc on the
steering knuckle, finally mount on the stop washer.
4. Adjust preload:
(a) Mount on the steering knuckle nut and screw it up
according to the specified torque.
Fastening torque(100-120)Nm
(b) Run the front wheel hub by 1/4-1/3 round so as to seat the
bearings.
Suspension System and Automobile Axle (SF/4WD)Front Wheel Hub and Steering Knuckle (Front Wheel Hub)
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SA-48
(e) Hold the bolt of front wheel hub with the spring-tension meter
and drag slowly in the direction of the spot tangent line.
Suitable tension range(29-54)N
The nut should be screwed up again within the suitable range if the
tension value is overlarge or over small.
(f) Check the bearing to ensure it cannot leap excessively (the
axial clearance should not be more than 0.05mm).
(g) Measure the bouncing value of the front brake disc, which
should not be more than 0.11mm, and
5. Mount the liner and the free hub:
(a) Tear down the free wheel hub cap firstly.
(b) Mount the liner and the free hub on the front wheel hub.
Fastening torque(25-29)Nm
(c) Mount on the free wheel hub cap.
Fastening torque(6-12)Nm
6. Mount the brake caliper:
(a) Mount the brake caliper on the steering knuckle and screw
up the bolts according to the specified torque.
Fastening torque123Nm
(b) Connect the Bundy tube.
Fastening torque20-22Nm
7. Check the height of brake liquid level and, if required, add
the brake liquid, exhaust the gas from the brake system.
Suspension System and Automobile Axle (SF/4WD)Front Wheel Hub and Steering Knuckle (Front Wheel Hub)
(h) Bend one tooth of lock plate inside and other teeth outside
so as to lock the steering knuckle nut.
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SA-49
Steering Knuckle
Dismantle of Steering Knuckle
1. Tear down the brake caliper, he front wheel and the front
brake disc.
2. Tear down the dust cover and the brake shell;
3. Tear down the steering knuckle arm from the steering
knuckle;
4. Tear down the vibration damper from the lower arm;
6. Tear down the steering knuckle:
(a) Tear down the split pin and groove nut from the position
where the ball stud locates.
(b) Tear down the steering knuckle from the position where
the ball stud locates with the special service tool. 5. Tear down the transverse stabilizer rod from the lower
arm;
Suspension System and Automobile Axle (SF/4WD) Front Wheel Hub and Steering Knuckle (Steering Knuckle)
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SA-50
(c) Tear down the split pin and groove nut from the position
where the lower ball stud.
(d) Tear down the steering knuckle from the position where
the lower ball stud with the special service tool, and
(e) Press down the lower arm to tear down the steering
knuckle.
7. Tear down the Lower ball stud assembly from the posi-
tion where the steering knuckle locates.
Steering knuckle inspection and change
Inspection on and Change of Steering
knuckle
1. Check the steering knuckle
Check the steering knuckle with the dye penetration agent to
see weather has crack, if any crack is found, change the
steering knuckle.
2. Tear down the inner oil seal
drive shaft and the thrust
plate
steering knuckle.
Prize out the inner oil seal
drive shaft from the steering
knuckle with the screwdriver to take out the thrust plate
steering knuckle.
Suspension System and Automobile Axle(SF/4WD) Front Wheel Hub and Steering Knuckle (Steering Knuckle)
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SA-51
3. Tear down the needle bearing;
Tap out the steering knuckle small sleeve with hammer and
copper.
4. Tear down the needle bearing.
Tap out the needle bearing with the hammer and copper bar.
5. Mount the steering knuckle small sleeve;
Tap in the steering knuckle small sleeve with the special
service tool.
6. Mount on the needle bearing;
Tap in the needle bearing with the special service tool.
7. Mount on the thrust plate- steering knuckle;
Coat the needle roller of the needle bearing with the lithium
base grease, and plaster the lubricant on the both sides of the
thrust plate ñsteering knuckle.
Suspension System and Automobile Axle(SF/4WD) Front Wheel Hub and Steering Knuckle (Steering Knuckle)
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SA-52
8. Mount the inner oil seal óon the steering knuckle.
Check the oil seal visually, if any deformation or glue lack is
found, change the oil seal
Mount of Steering Knuckle
1. Mount the lower ball stud on the steering knuckle;
Connect the lower ball stud and the steering knuckle with
bolts, and screw up the bolts according to the specified torque.
Fastening torque(70-90)Nm
2. Mount on the steering knuckle
(a) Coat the lubricant HP-R on the drive shaft.
(b) Press down the lower arm to mount on the steering
knuckle.
(c) Mount on the groove nut of lower ball stud and screw up
the nut according to the specified torque, and then mount
on the split pin.
Fastening torque(132-152)Nm
(d) Mount on the groove nut of upper ball stud and screw up
the nut according to the specified torque, and then mount
on the split pin.
Fastening torque(132-152)Nm
Suspension System and Automobile Axle (SF/4WD)Front Wheel Hub and Steering Knuckle (Steering Knuckle)
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SA-53
3. Mount the stabilizer rod on the lower arm.
Fastening torque(20-26)Nm
4. Mount the vibration damper on the lower arm.
Fastening torque(127-147)Nm
5. Mount the steering knuckle arm and the brake oil pipe
bracket on the steering knuckle, and coat the sealing
agent 1271 on the bolt thread.
Fastening torque180Nm
6. Mount on the dust cover and the brake shell.
Align the locating hole of dust cover and the groove of the
steering knuckle so as to guarantee the dust cover and the
steering knuckle are concentric.
Fastening torque(25-29)Nm
7. Mount the front wheel hub and the front brake disc as well
as the brake caliper.
8. Check the height of the brake liquid level and, if required,
add the brake liquid, exhaust the gas of the braking
system.
Suspension System and Automobile Axle (SF/4WD) Front Wheel Hub and Steering Knuckle (Steering Knuckle)
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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
NMspecified torque
SF4WD
front speed reducer and
differential assembly
constant speed
drive shaft