Great Wall service chassis and body Manual - part 44

SA-72

(f)

Clean the differential housing surface, mount the axle

driven bevel gear on the differential housing with copper

bar.

Notice: align the assembly marks made when

disassembling when mounting the axle driven bevel

gear, and tap in the driven bevel gear evenly alongside

the direction of circumference.

(g)

Mount on the lock plate and screw on the bolts, then lock

the lock plate with the drift pinch and hammer.

Fastening torque

(70-90)N
m

Notice: the bolts should be screwed up in the diagonal

order in such manner that tighten a little at first, and then

screw up evenly to the specified torque, the lock plate

claw should contact closely the side face of bolt head.

(h)

Press the inner race and roller assembly of bearing

50KB801 in the bearing position at the both sides of

differential housing.

(i)

Put the adjusting gasket in the outer position of the side

bearing of front speed reducer shell.

(j)

Encase another adjusting gasket with the outer race of

bearing 50KB801 in the front speed reducer shell to-

gether with the differential.

Suspension System and Automobile Axle (SF/4WD)

 Front Speed Reducer (Disassembly and Assembly of Front Speed Reducer)

(k)

Mount on the right and left cap-differential bearing, and

screw up the bolts with spanner according to the specified

torque.

Fastening torque

78N
m

SA-73

(l)

Run the flange to check the swing difference of axle

driven bevel gear.

Max swing difference

0.07mm

Remark: if the requirement is not satisfied, tear down the axle

driven bevel gear from the differential, and then screw up the

bolts again.

8.

Change the bearing of the long semi-axis:

(a)

Take down the retainer ring with the calipers.

(b)

Tear down the grooved ball bearing from the long semi-

axis.

(c)

Mount on the new grooved ball bearing on the long semi-

axis

(d)

Mount on the retainer ring with calipers.

Suspension System and Automobile Axle (SF/4WD)

 Front Speed Reducer (Disassembly and Assembly of Front Speed Reducer)

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

(175 
 35)N
m

7.

Measure the preload on the driving bevel gear bearing

with torque tester :

New bearing

(1.2-1.7)N
m

Old bearing

(0.9-1.3)N
m

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)

SA-75

8.

Encase in the differential:

(a)

Put the adjusting gasket in the outer position of bearing

at the side of the front speed reducer shell, and then

Encase the differential in the front speed reducer shell, be

sure there is a play between the driving gear and the

driven gear.

(b)

Tap the axle driven bevel gear with the rubber hammer,

so that the bearing 50KB801 on the differential, together

with the adjusting gasket, contact the mounting part of

the side face of speed reducer closely.

9.

Measure the clearance between the axle driven bevel

gear and the driving bevel gear with the dial indicator to

select the adjusting gasket that satisfy the reasonable

play of (0.15-0.25)mm.

10. Select the adjusting washer for the other side:

The thickness of adjusting gasket should eliminate the clear-

ance between the bearing 50KB801 and the front speed re-

ducer shell, on the other side, the adjusting gasket should not

be over thick because the over-thick gasket will lead in too

large pre-tightening force on the bearing 50KB801 of

differential.

11. Tear down the adjusting gasket and differential, and

encase the new adjusting gasket in the front speed

reducer shell, and another adjusting gasket, together

with the differential housing, should be encased in the

front speed reducer shell correctly.

Suspension System and Automobile Axle (SF/4WD) 

 Front Speed Reducer (Assembly of Front Speed Reducer)