Great Wall service chassis and body Manual — part 37
SA-44
Front Wheel Hub and Steering Knuckle
Element Figure
Suspension System and Automobile Axle (SF/4WD)
Front Wheel Hub and Steering Knuckle
lock ring
cushion block
nut
lock ring
cushion
block
shock
absorber
upper arm
transverse stabilizer rod
bolt
transverse stabilizer
rod gasket
rubber snubber
washer
stabilizer rod limit tube
brake
caliper
rubber
snubber
washer
constant speed
drive shaft
needle
bearing
steering knuckle
steering knuckle
small sleeve
retainer ring
washer-spline of
steering knuckle
shaft
thrust plate-
steering knuckle
inner oil
seal- drive shaft
brake oil pipe bracket
steering
knuckle arm
brake shell
dust cover
oil seal -
front hub
front hub bearing
(inner)
front wheel hub and
front brake disc
stop washer
lock plate
front hub bearing
(out)
steering knuckle
big nut
free wheel hub
noumenon
gasket
free wheel
hub cap
gasket
liner
lower ball stud
Parts that cannot be reused after being used
specified torque
N
m
135-155
6-12
25-29
25-29
70-90
132-152
20-26
180
127-147
132-152
123
SF 4WD
transverse stabilizer rod gasket
transverse stabilizer rod gasket
transverse stabilizer
rod gasket
transverse stabilizer
rod gasket
SA-45
2.
Tear down the free hub.
3.
Tear down the retainer ring and the axle spine of washer-
steering knuckle:
Tear down the retainer ring with the pliers for retainer ring, and
take down the axle spline of washer-steering knuckle by hand.
4.
Tear down the front wheel hub and front brake disc:
(a)
Prize up the lock plate with screwdriver.
(b)
Tear down the steering knuckle nut with special service
tool to take out the lock plate.
(c)
Tear down another steering knuckle nut with special
service tool to take out the stop washer.
(d)
Tear down the front wheel hub and the front brake disc.
Front Wheel Hub
Disassembly of Front Wheel Hub
1.
Tear down the brake caliper:
(a)
Tear down the Bundy tube from the brake caliper and
block the pipeline of Bundy tube with cork.
(b)
Tear down the brake caliper from the steering knuckle.
Suspension System and Automobile Axle (SF/4WD)
Front Wheel Hub and Steering Knuckle (Front Wheel Hub)
SA-46
5.
Tear down the front hub, the oil seal and the inner race
of front hub bearing (inner)
(a)
Prize out the oil seal.
(b)
Take out the inner race of front hub bearing (inner).
6.
Inspection on and change of the outer race of front hub
bearing
(a)
Check each bearing:
Wash the inner and outer races of each bearing to check
their wear or damage situation.
(b)
Tear down the outer race of each bearing:
Tap out the outer bearing race with copper bar and hammer.
Notice: bind the inner and outer races of the same
bearing together to prevent from mixing.
7.
Inspection and change for front brake disc
(a)
Check the wear situation of the front brake disc.
(b)
Tear down the bolts that connect the front wheel hub and
the front brake disc.
(c)
Connect the front wheel hub and the front brake disc with
bolts, which are tightened diagonally with moment span-
ner according to the specified torque.
Fastening torque
(70-80)Nm
(d)
Make the dynamic balance test on the dynamic balancer,
and the amplitude value displayed should not be smaller
than 13.5g under the condition that the measuring rotat-
ing velocity is 796 r/m and the locking rotating velocity
of 786 r/m, otherwise, tap the counter balanced clip,
which is 4g each, in the corresponding position, the clip
number should not be more than 4.
(e)
Tap in the new bearing outer race carefully with the
special service tool.
Notice: the inner and outer races of the same bearing
should be changed in one time.
Suspension System and Automobile Axle (SF/4WD)
Front Wheel Hub and Steering Knuckle (Front Wheel Hub)
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 4
5 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 torque
25Nm
(d)
Mount on the lock plate and mount on another steering
knuckle nut.
Fastening torque
60Nm
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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