Great Wall Hover. Manual — part 14

2. Operation of 4WD

The operating auxiliary steering column can be shifted to 4WD status.

For position of auxiliary steering column and corresponding operating

condition refer to table.

3. Caution for operation:

a. Do not use 4WD in good surface, otherwise the tyre and components

of drive system will be damaged easily and increase the consumption

of fuel, and cause the noise of drive system.

b. Please run in 1st-Gear under “4L” gear position when run in very

low speed in field.

Operating instruction of transmission SC5M4D-C

1.The schematic diagram of transmission operating gear position

is on the handle of steering column.

During the process after vehicle is started and in traveling, it must

step the clutch pedal to bottom before the shifting. If need shift from

5

th

-Gear to reverse-Gear, it should move the shifting bar to the neutral

position of 3rd/4th-Gear. Shift to R-Gear after stop the vehicle stably,

otherwise, it can not shift.

During the traveling process. It should always pay attention to the

shifting to make the vehicle matches to the speed of engine. The

correct shifting can improve the economical efficiency and prolong

the service life of engine. Do not shift from high-Gear to low-Gear on

the condition that the pointer of tachometer may enter into red area,

otherwise, the engine will be damaged.

Warning: Do not shift to reverse-Gear when the vehicle moves

forwardly, otherwise the transmission will be damaged.

hand hall of main steering column

hand ball of auxiliary steering column

Auxiliary steering

column position

drive Operating

condition

2H

2WD

Use this gear position when run in the general railway and high speed highway.

4H

High speed 4WD

Use this gear position when run in the deep snowland, sand ground or uneven road

in normal speed.

N

Neutral gear

When use the gear position during using of winch, it could not drive the vehicle.

4L Low

speed

4WD

Use this gear-position when run in uneven road such as mud land or climbing or

downward （especially when need increase the power）.

Transmission-25

2.Replacement of oil-seal of transfer case

The replacement of transfer case oil seal is shown as figure. Disconnect

the drive shaft from the transfer case, use the flat head screwer to

remove the oil seal

Caution: Do not damage the housing hole during the disassembly.

Then use the special tools to knock the transfer case oil seal into

the transfer case. It should pay attention to the installation dire

tion of oil seal. The oil seal is flush with the port of transfer case.

Shown as figure. Coat the lip of oil seal with the specified general

synthetic gear oil.

3. Disassembly and check of transmission

The preoperation before the removal and after installation of

transmission is : When remove and install the manipulator cover

assembly, drain and fill with the specified transmission and transfer

case lubrication oil. When remove and install the front and rear drive

shaft, separate each plug-in part of transmission from the vehicle.

Inspection of manipulator cover assembly:

The bolt dimension is different for different installation position. Do not

confuse it during the installation. It should install the fixing bolt A firstly.

The tightening torque of bolt A and B bolt is 15

22N

m.

installation position of fastening blot

bolt

bolt

bolt

Repair of transmission SC5M4D-C

1. Inspection of oil level of transmission and transfer case:

Screw off the oil drainage screw plug of main box and transfer case;

drain all lubrication oil, tighten the oil drain plug to specified torque.

The torque is: 30

35N m. Fill the main box and transfer case with

the transmission oil through the oil filling port. The number is hyperbolic

gear oil SAE80W/90, comply with API GL-4. The oil quantities are

main box : 2.2 L, transfer case : 2.7 L. (for high and low temperature

environment refer to maintenance specification). Tighten the oil filling

screw plug to specified torque. The torque is: 30

35N

m.

front output shaft oil

seal (SC

1802504)

rear output shaft oil seal

(SC

1802323)

transmission

transfer case

oil filling screw plug

oil-drain screw-plug assembly

(JK72

1701070)

oil filling screw plug

Transmission SC5M4D

C assembly

N

m: specified torque

Used component which can not be used any more.

transmission

separated case

spring cylindrical pin

cylindrical

compression spring

steel ball 6.35

cylindrical compression spring

reverse lamp

switch bracket

wire clip

elastic cylindrical

pin

manipulator cover assembly

washer

test switch bracket

select & shift seating

washer

location spring

cylindrical pin

cylindrical compression spring

bush

wire clip

stud M10

1.25

Transmission-27

Manipulator cover assembly

Rear housing assembly

nut

reverse lock
assembly

manipulator

cover assembly

ball head

rubber cover

auxiliary steering

column stop plate

bush

ball head base

washer

pin

auxiliary steering

column assembly

handle of transfer case

ball head

hood

ball head

rubber cover

stop plate of

main bar

bush

ball head base

pin

washer

master control lever assembly

handle of

gearlever

N

m: specified torque

Used component which can not be used any more.

odometer driven gear

assembly

odometer seating lock plate

14-19

14-19

oil seal

dustproof seal

guide bushing

rear housing

adjusting shim

24-33

26-36

aluminum gasket

mushroom lock spring

aluminum gasket

24-33

mushroom lock spring

26-36

30-42

N

m: specified torque

Used component which can not be used any more.

Pregummed component

Use the special tools

steel ball 7.938 (3)