Look for the manual first to see what the specific design of the warm air tank is like. Most heating water tanks are similar in design. It should be noted that the disassembly should be carried out in sequence, and it must not be fast.
There are some screws in the water tank that need to drop like the catheter. If it is forcibly removed, it will only cause damage, and it will be very troublesome to reassemble it. The principle of warm air water tank is not complicated, and it is actually very simple to do it slowly in order.
Removal and installation of heating device:
(1) Drain the coolant from the cooling system.
(2) Remove the control panel.
(3) Separate the cable fixing piece on the left side of the heater and remove the screw on the terminal.
(4) Pull out 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 heater water supply pipe behind the engine and cylinder head.
(7) Disconnect the heater water supply pipe behind the cylinder head.
(8) Remove the heater return hose on the thermostat housing, insert the pedal pump hose into the heater return pipe, pump the cooling water from the water supply pipe into the container, and blow out the residual cooling liquid in the heater.
(9) Remove two connecting bolts, and then separate the oil return pipe.
(10) Pull out the right air pipe under the heater oil return pipe.
(1 1) Remove the two bolts on the other side and separate the water supply pipe on the flange joint.
(12) Pull out the air pipe under the water supply pipe on the left side of the heater.
(13) Remove the water supply pipe bracket on the left side of the firewall.
(14) Loosen the mounting bracket nut under the water supply pipe bracket.
(15) Loosen the right mounting bracket nut under the return pipe.
(16) Remove the two mounting nuts at the top of the heater.
(17) Disconnect the control line of the blower motor switch.
(18) Disconnect the control line on the main damper on the heater side.
(19) Separate the heater from the mounting stud, then lift it up and remove it from the vehicle.
(20) Install in the reverse order of disassembly. However, it should be noted that when connecting the blower control line, it is necessary to first connect the line to the switch, then move the switch to the "MAX" position, connect the control line end to the main damper arm, open the main damper and reach the top, and then locate the external cable; After all the work is completed, add coolant as needed.
4. Dismantling and installing the heater water tank:
(1) Remove the heater according to the above requirements and steps.
(2) Remove the spiral lamp on the air inlet of the heater.
(3) Carefully pry open all the fixing clips of the heating device.
(4) Press out the linkage mechanism of the left and right dehumidification dampers.
(5) Push back the lock of the left dehumidification damper.
(6) Pull out the left and right joint pads with the dehumidifying nozzle.
(7) Press the connecting rod of mixed gas damper on the left and right arms.
(8) Lever out the ball heads of the connecting rods of the left and right mixed gas dampers from the ball seats.
(9) Divide the heating device into two halves, and remove the mixed gas baffle.
(10) Remove the fixing screw of the heater water tank frame, remove the frame and take out the water tank.
(1 1) Install in the reverse order of disassembly.