Great Wall hover, Service Manual

Page: 131 / 425

Figure 8.1 Removal of typical pump
Disassembly /assembly
Cautions for assembly
I t should notice the following items before reassemble the transmission system:
1. Ensure the cooler pipeline is washed and all chip is removed when replace the transmission. It can
be realized by using the compressed air to enter into the rear cooler pipeline to remove the oil and
all foreign material in the front cooler.
2. It should check the cooler after the transmission is installed. Ensure the front and rear cooler
pipeline is connected to the proper container. Rotate the vehicle in P-Gear in idle-speed, measure
the flow rate within 15s.
3. The flow within 15s should be more than 1L.
4. It should avoid any water entering into the transmission. This will cause the transmission fluid to
generate the foam or make the transmission fluid flows out form the respirator.
5. Ensure that two grounding wires in vehicle (one end to battery, one end to vehicle) are connected
before the installation of the anode of battery.
6. If the power control module and transmission control unit is exchanged, then calibrate the pro-
gram refer to related throttle position in Part
Removal
1. Transmission
Caution:
It should remove the gear-position sensor before wash the transmission in solvent or hot abluent.
When need to remove the transmission from the vehicle, it should drainage the transmission fluid,
and use the special removal tools.
The removal of the transmission should be processed in module method, the details of removal of each module is described
in following section in detail. Refer to details of special tools listed in table 9.10 and 9.6 when remove it.
The technician needs a set of quality tools when inspect the transmission, especially for dual hexagon spanner of model
30, 40, 50 and 8mm, 10mm, 12mm.
It should abide by the following procedure when disassemble the transmission:
a. Remove the shell of torque converter and torque converter.
b. Place the transmission on the saddle platform.
c. Remove the oil pan and oil pan sealing.
d. Remove the filter retainer of each valve and remove the filter.
e. Remove the wire on solenoid valve, place it in side.
f. Remove the protection screw in the valve and remove the valve from the main housing (remove the model Z connecting bar).
g. Remove the front servo circlip, cover and piston.
Caution:
The plastic servo block on used for piston return spring.
h. Remove the flange shaft fork, then remove the transmission housing (2WD and Chairman).
Use the 8mm hexagon wrench to move the pump to the housing bolt.