Re: WP American Top loader
The pins are part of the original transit bolts. When you instal these you pull a length of tape at the back which is attached to 3 split pins, these split pins go through the little metal rods you see below the appliance, split pin comes out and transit pin falls into the little cups below the machine.
I have saw a few of these with one of the pins not falling into the cup causing noise when in use, there should be 1 pin in each of the 3 cups.
Also check that the 3 springs round the tub and the spring going from the back of the tub down to the chassis are all in place.
John