1. First try to unscrew the faucet from left to right to see if it can be turned.
2. Close the main valve first, drop a few drops of kerosene (every 5 minutes) at the joint, and then try to twist it after the oil seeps in.
If the rust is dead, you can't turn off the main valve, cut it off from the water pipe and elbow, borrow a faucet, knock (grain) yourself, and install a faucet.
4. First turn off the main brake. Remove the yellow part with adjustable wrench and water tongs. The water pipe clamp is stuck in the elbow, and then the brass part is removed with adjustable wrench. After disassembly, take out the copper core valve, install the rubber ring with the same size and restore it. In fact, you can change the faucet and use the same tools mentioned above! Similarly, clamp the elbow of the steel pipe with a pipe wrench, then clamp the faucet with a adjustable wrench and unscrew it counterclockwise (attention).
5. Find a big wrench, 300 or 450. It is better to have two 450 s, starting from the six corners of the connection. What's more, the wrench may not work well when disassembling the pipeline. You can borrow a pipe wrench to remove the existing severely corroded pipeline. If the pipe can't be removed, find a water meter, disconnect it from the water outlet and replace it with ppr pipe.
6. I really won't find a professional bathroom maintenance master to help me post the task on the comfortable 100 platform.
Second, the old faucet screw rust repair replacement steps
1. Prepare tools for faucet maintenance, such as new faucet, wrench, water bottle, etc.
2. Remove the rusty old faucet with a wrench.
The old faucet is really rusty and can't be turned on. You can try to boil a cup of boiling water with dripping oil, vinegar or electric cup, and then try to turn on the tap.
4. Replace a new faucet and buy a faucet and a raw material belt.
5. Wind the raw material belt on the thread of the new faucet, and pay attention to the winding direction, that is, hold the faucet with your left hand and wind the raw material belt clockwise with your right hand.
6. Then screw the new faucet wrapped with raw tape into the water inlet.