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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

135-155

6-12

25-29

70-90

132-152

20-26

180

127-147

132-152

123

SF 4WD

transverse stabilizer rod gasket

transverse stabilizer
rod gasket

SA-45

Tear down the free hub.

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.

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

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

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).

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.

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

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.

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

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.

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)

Content .. 35 36 37 38 ..