[pwcarson]

The freezer reads 32 and the frig reads 45,the fan and compressor are running.I replaced ,adaptive defrost encl.,temp control assembly and overload switch?Thank you for your time,pwcarson.

[denman]

Here are your parts includes a wiring diagram.
Replacement parts for Maytag MZD2766GEQ REF - SXS/I&W | AppliancePartsPros.com

You said the compressor and fan is running, is the evaporator/freezer fan also running?
It is required to pull air through the coils to cool it efficiently.

Is the compressor warm and can you feel it vibrating?

I am assuming that it runs constantly other than perhaps when it goes into a defrost cycle.

If yes remove the cover from inside the freezer so you can inspect the evaporator coils.
If the coils are heavily iced/frosted over you have a defrost problem.
If there is just frost in one area (usually where the freon enter the coils) you have a sealed system problem. This check must be done after the compressor has run for at least a couple hours, if you do it shortly after a defrost cycle you will reach the wrong diagnosis.
If it is a sealed system problem it will be an expensive repair as you need a pro. Often it makes more sense to put the dollars towards a new unit.

Below is a link that may be useful.
http://www.applianceaid.com/refrigerator.html
Take a look at #20 and then the example pictures part way down the page.