1. First, we remove the wiper blade and the cover plate of the water storage tank. Because there is a fixed line of the workbench behind the wiper motor, the wiper motor should also be removed. Three bolts in the water storage tank fix the workbench, all of which can be disassembled. Remove the heater hose connector and fixing cover plate connected to the heater water tank. If there are two bolts on the firewall to fix the bellows system in the car respectively, remove them together at this time.
2. Secondly, remove the two bolts at both ends of the internal workbench, and then remove the fuse box guard, steering wheel guard, instrument panel and housing in turn. Remove cassette player, ashtray, tuyere, fixed frame and sundry box in front of co-pilot, and remove the screws connecting the workbench inside. Remove the headlight switch and wiper switch, and remove the steering wheel fixing wire and two screws for fixing the workbench. At the same time, remove the decorative plates on the left and right sides of the steering wheel and unplug the switch plug. All the screws on this workbench have been removed. Let's deal with the wiring harness and pull the workbench out. Make sure that the left and right forces are balanced, and then take out the workbench.
3. Finally, remove the wire harness fixing wire on the bellows assembly, unplug the plug that gets in the way, remove the three fixing wires on the bellows assembly, and gently shake it to the left to take out the heater mechanism assembly. Remove the old heater water tank and replace it with a new one, and the disassembly process is completed. When everything is ready, the process of reassembly is the opposite of disassembly. After reassembly, add antifreeze and exhaust. After checking that there are no omissions, the warm air will soon heat up and the temperature will be normal.