1, if there is a ditch, you have to use a thousand pounds to go to the top and change the top edge. If it is flat, it is absolutely impossible. To say that this work has little scientific and technological content;

2. But two workers changed it for three hours in the morning, and it was still difficult to remove the old rubber sleeve on one side, and there was no special tool for peach edition. But the repairman and I found a big bolt and made a simple tool similar to the peach version. Similarly, the rubber sleeve is squeezed in with nuts, and the X-shaped rubber sleeve is replaced with sagitar, which is 120.

3. The triangle arm and the upper triangle arm need to be smashed. Maybe we can find a helper. Try it. Change it early. It's comfortable.