What are the steps to change the warm air small water tank for old Santana?

The steps to replace the old Santana warm air small water tank are: 1, and drain the cooling liquid of the cooling system; 2. Remove the control panel; 3. Remove the cable fixing piece on the left side of the heater and remove the screw on the terminal; 4. Unplug the wire connector behind the blower motor; 5. Disconnect the vacuum tube and lighting line behind the heater control device; 6. Place a container under the engine and the heater water supply pipe behind the cylinder head; 7. Remove the water supply pipe of the heater behind the cylinder head; 8. Remove the old small heater water tank and install a new heater water tank. Santana's length, width and height are 4475mm, 1706mm and 1469mm respectively, and its wheelbase is 2603 mm Its body type is a four-door five-seat car, and its gearbox is five-speed manual. Million car purchase subsidy