How to remove the iron valve on the accelerator of Mercedes-Benz ml350?

Hello, the cover on Mercedes-Benz ml350 engine can be inserted like this:

Use the special tool to remove the second row seat at the back. There are two round covers below, where you can see the filter element and the pump. Under the back seat, left steam filter, right gasoline pump.

1. Lift the rear seat forward and take away the decorative cloth.

2. Heat the top sealing cover with a hair dryer, and then pry it open with a crowbar.

3. Close the plastic cover at the top of the steam filter and gasoline pump with special tools.

4. Remove the steam filter and the gasoline pump respectively, and remove the oil pipe connecting the steam filter from the gasoline pump side.

5. Reverse installation.

Note: the amount of gasoline should not exceed half. If it is more than half, it needs drainage.