Great Wall service chassis and body Manual - part 49

SA-92

tooth top engagement

select the adjusting washers that make the main teeth apart from the axle driven bevel gear.

teeth convex

                 =

teeth concave

11. Check the engagement situation of the axle driven bevel

gear and the driving bevel gear:

(a)

Coat four teeth locating on different spots of axle driven

bevel gear with red powder.

(b)

Rotate the axle driven bevel gear in different directions.

(c)

Check the teeth engagement situation.

The teeth trace of axle driven bevel gear should satisfy

this requirement. If not, select the suitable adjusting

washer to correct according to the poor teeth engagement

situation.

Washer thickness (unit: mm) see the following table:

Suspension System and Automobile Axle (Rear)

 Rear Speed Reducer (Disassembly of Speed Reducer)

heel end engagement

toe end engagement

teeth root engagement

select the adjusting washer that make the main teeth

contact the axle driven bevel gear more closer.

Group NO.

Washer thickness

Group NO.

Washer thickness

1

1.60

7

1.90

2

1.65

8

1.95

3

1.70

9

2.00

4

1.75

10

2.05

5

1.80

11

2.10

6

1.85

12

2.15

SA-93

12. Lock the double-eared stop washer to mount the stop

gasket and bolts:

(a)

If the engagement trace satisfies the requirement, lock

tightly the double-eared stop washer with hand hammer

and pinch.

(b)

Mount on the stop gasket, spring gasket and bolts, and

then screw up the bolts.

Tightening moment

(18-26)N
m

(c)

Tap in he adjusting ring with the pinch and hammer.

13. Measure the total preload:

Preload: (1.8-2.4) N

m

If the preload is beyond the specified range, change the gas-

kets between the jacket and bearing 7607E, until they meet

the requirement.

(a)

If the preload is larger than the specified value, change

the adjusting washer.

(b)

If the preload is smaller than the specified value, screw up

the nuts again slowly but not exceed 160N.m.

Notice: if the screwing torque exceeds the max torque,

change the adjusting washer and repeat the preload

process. Do not screw back the main-tooth nut to reduce

the preload.

14. Check and adjust the flange bouncing

(a)

Attach the dial indicating lamp seat on the speed reducer

housing with the measuring head contact the flange face,

run the flange to observe the swing out range of the dial

indicating lamp hand.

Radial full bouncing tolerance

0.10mm

Remark:  the two bouncing values should be controlled within

0.10 mm, as for the parts of bounce exceeding the tolerance,

loosen the nut-driving bevel gear to assembly them in another

angle, measure the bounce value again. Observe carefully the

swing direction of the hands, which can be referred when

changing the locations of flange and the driving bevel gear. If

the requirement cannot be satisfied after several trials, change

the new flanges until the requirement is met.

Suspension System and Automobile Axle (Rear)

 Rear Speed Reducer (Disassembly of Speed Reducer)

30mm

15. Rivet the driving bevel gear nuts.s

SA-94

Mount of Rear Speed Reducer and

Differential Assembly

1.

Mount the speed reducer and differential assembly on

the rear axle housing.

Tightening moment

(18-26)N
m

Remark: in case the sealing gasket is mounted, it should be

checked to see whether it is damaged before mounting, if

damaged, change with the new sealing gasket, and the dam-

aged sealing gasket should be clear away; if no sealing gasket

is mounted, no mount is required to mount. Clean the contact

face of the mounted axle housing and coat it with silicon-

rubber plain sealing agent.

2.

Connect the drive shaft and flange well and be careful to

align the assembly marks marked when disassembling.

Tightening moment

(69-79)N
m

Screw up the oil drain plug with the Tightening moment

of (140-150)N

m

 Mount on the half-shaft and the brake assembly to adjust the

brake oil path so that the wheel brake pump is filled with brake

liquid.

3.

Inject in the heavy-duty oil.

Oil brand: heavy-duty oil graded GL-5;

Viscosity: SAE 85W/90

Oil volume: add the oil until it overflows from the oil filler

outlets.

Screw up the oil-filling plug.

Tightening moment

(140-150)N
m

Suspension System and Automobile and Axle (Rear)

 Rear speed reducer (Mount of Rear Speed Reducer and Differential Assembly)

SA-95

Rear Differential

Element Figure

half axle gear
thrust gasket

differential housing

pin

planetary
gear shaft

planetary gear
stop gasket

half-axle gear

planetary gear

1.

Tear down the speed reducer and the differential

assembly.

2.

Tear down the differential from the speed reducer and

differential assembly.

Change of Differential Parts

1.

Disassembly of Differential

(a)

Tap out the pin with hammer and pinch.

Suspension System and Automobile Axle (Rear)

 Rear differential

(b)

Tear down the planetary gear shaft, the planetary gear,

planetary gear stop gasket, half-shaft gear and half axle

gear thrust gasket.