Yutong bus is always easy to cushion the cylinder! Master, please advise.

The seat cushion is easy to boil when it is red, and the water tank will expand. The waterway hole of the car body is not a big problem. Watch the water, don't boil it. Generally, it is no problem that your car is not red when the seat cushion is red. If the water tank is flat, I suggest you see if the cylinder head of the air pump is stupid and pump up the water tank. The air pump is water cooled. I repaired it once and found the cylinder head of the air pump to inflate the water tank for your reference.