1 Drain the old antifreeze.
2 Remove the cab instrument assembly and control panel, etc.
3 Remove the fixing screws of the instrument panel.
4 Unplug the heater hose connector and hose.
5 Remove the fixing bolts of the heater water tank.
6 Replace the heater tank with a new one.
7 reassemble according to the principle of first disassembling and then assembling, then disassembling and then assembling new clothes.
8 Add antifreeze.
9 check the completion audit