Here are your parts, includes a wiring diagram.
http://www.appliancepartspros.c...ch.aspx?model=MDE6400AYW

Timers are machine specific so this would be a lot of effort

You also a wiring diagram for the older timer/unit.

Then you have to sit down and figure out if the two are even a close match.

You would also need the old plug with some wire attached so you can splice the wires in.

Could be a lot of work for nothing.

I recently was given another Maytag Atlantis electric dryer with model number MDE6400AYQ and s/n 19461681CR. It is in excellent condition in terms of appearance and very clean but It will not start or heat. I have checked every item that would normally be a possible source of the problem such as the thermal fuse (2), thermostats, door switch, heating element, and all the wiring connections. These items were all checked 3 times and no problem was found. The only item left was the timer which in my opinion is not as good as the old design timers plus a replacement of the original is very expensive. I have several older design timers which are typically Model 460-G and are in good working condition. The problem is that the original timer uses a 9 pin connector plug and the old design timers use individual connectors . Also the original timer is very loud when it runs as compared to the older design designs.. I am now trying to figure out how to make the connections to make the old design work on this Atlantis dryer. Any help would be appreciated.

Thanks.
I have actually taken this "sealed" timer assembly apart and found the problem. It was easy to fix. My situation now is that when I was able to get it apart a couple of plastic levers fell out and I cant figure out how to get it back together properly. If you have any recommendations for a timer repair shop it would be greatly appreciated.