Great Wall service chassis and body Manual — part 33
SA-28
Suspension System and Automobile Axle(SF/2WD)
Front Suspension
locking ring
cushion block
nut
locking ring
cushion block
upper arm
transverse stabilizer rod
bolt
transverse stabilizer rod gasket
rubber
snubber washer
restrictor tube
Brake
caliper
steering knuckle
brake oil pipe bracket
steering
knuckle arm
brake shell
dust cover
oil seal -front hub
front wheel
bearing(inner)
front wheel hub and
front brake disc
stop washer
lock plate
front hub bearing
(outer)
steering knuckle nut
liner
lower
ball stud
Parts that cannot be reused after being used
:specified torque
N
m
135-155
23
29
25
29
70-90
132-152
20-26
180
127-147
132
152
123
shock absorber
steering knuckle
outer flange cap
Front wheel hub and steering knuckle
Element figures
SF2WD
stabilizer rod gasket
stabilizer rod gasket
rubber snubber
washer
stabilizer rod gasket
stabilizer rod gasket
SA-29
Front Wheel Hub
Disassembly of Front Wheel Hub
1.
Tear down the brake caliper.
(a)
Tear down the brake Bundy tube from the brake caliper,
and block the Bundy tube line with a cork.
(b)
Tear down the brake caliper from the steering knuckle.
2.
Tear down the steering knuckle outer flange cap.
3.
Tear down the front wheel hub and brake disc.
(a)
Open the lock plate with a screwdriver.
(b)
Tear down the steering knuckle nut with the SST tools to
take out the. lock plate
(c)
Tear down the other steering knuckle nut with SST tools
to take out the stop washer and the steering knuckle outer
bearing.
(d)
Tear down the front wheel hub and the brake disc
assembly.
4.
Tear down the front hub, oil seal, front hub bearing
(inner) inner race and roller assembly.
(a)
Pry out the oil seal.
Notice: the deformed oil seal should not be reused.
(b)
Take out the front hub bearing (inner) inner race and
roller assembly.
Suspension System and Automobile Axle (SF/2WD)
Front Wheel Hub and Steering Knuckle (Front Wheel Hub)
SA-30
5.
Front hub bearing outer race inspection and change
(a)
Check each bearing
Wash the inner and outer races of each bearing, and check
them whether they are wearied or damaged.
(b)
Tear down the outer race of each bearing.
Tap out the bearing outer race with copper bar and
hammer.
Notice: bind the dismantled inner and outer races of
bearing together to prevent from mixing.
6.
Front brake disc inspection and change
(a)
Check the wear situation of front brake disc.
(b)
Tear down the bolts that connect the front wheel hub and
front brake disc.
(c)
Connect the front wheel hub and front brake disc and
screw up the bolts with moment spanner to the specified
torque diagonally
Fastening torque
(70-80)Nm
(d)
Conduct the dynamic balance test on the dynamic balancer,
the amplitude value displayed should not be above 13.5g
under the condition that the measuring rotating velocity
is 796 r/m and the locking rotating velocity 786 r/m,
otherwise, tap in the counter balanced clip, which is 4g
each, at the corresponding location, the number of the
clip should not be more than 4.
(e)
Tap in the new bearing outer race with the special service
tool.
Notice: the inner and outer races of bearing should be
changed in set.
Assembly of Front Wheel Hub
1.
Mount on the inner race and roller assembly of front hub
bearing (inner) as well as the front hub oil seal.
Coat the lithium base grease of 4 to 5 mm on the inside surface of
the bearing outer race and front wheel hub, and plaster the
lubricant in the front hub bearing (inner) and the roller assembly.
Coat a little lubricant on the lips of oil seal of front wheel hub, and
then tap the oil seal of front hub in place with special service tool.
Notice: do not coat the lubricant on the front brake disc face.
Suspension System and Automobile Axle (SF/2WD)
Front Wheel Hub and Steering Knuckle (Front Wheel Hub)
SA-31
2.
Mount on the inner race and roller assembly of front hub
bearing (outer).
After coating 4 to 5 mm lithium base grease on the outer race
of bearing, put in the inner race and roller assembly of front hub
bearing (outer), and then plaster the lubricant.
3.
Mount the front wheel hub and front brake disc on the
steering knuckle.
Coat a little lubricant on the steering knuckle where the oil seal
locates, and mount the front wheel hub and front brake disc on
the steering knuckle, then mount on the stop washer.
4.
Adjust the preload
(a)
Mount on the steering knuckle nut and screw up them
according to the specified torque.
Tighten torque: (100-120)N
m
(b)
Run the front wheel hub about 1/4-1/3 round, and seat the
bearing.
(c)
Loosen the steering knuckle nut to ensure the front brake
disc can run freely. Screw up the steering knuckle nut
again according to the specified torque.
Fastening torque
25Nm
(d)
Mount on the lock plate and another steering knuckle nut.
Tighten torque
60Nm
(e)
Hold the front wheel hub bolts with a spring-tension
meter and drag the meter slowly in the direction of the
tangent line of this spot.
Suitable tension range: (29-54)N
The nuts should be retightened until falls within the suitable
range if the tension force is overlarge or over small.
(f)
Check the bearing and ensure that the clearance, which is
not larger than 0.05 mm, is not excessive.
(g)
Measure the bouncing value of the front brake disc face.
Bouncing value should not be above o.11mm.
Suspension System and Automobile Axle (SF/2WD)
Front Wheel Hub and Steering Knuckle (Front Wheel Hub)
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