I am not an appliance technician but I have the same washer and its the water pump making the noise. What I have read and found out, it there was issues with the race on on the old pumps and would cause the pulley to come lose and make the noise.
Maytag Performa Pavt454eww Top Loading Washer That After Four Years Of Great Service Started Making A Clicking Noise On Spin Cycle. What Is It?