Maytag performa dryer model-pdet920ayw will not heat. drum tumbles and timer works

It is possible that the motor start/run capacitor has failed, rendering the motor unable to get going. The capacitor will look something like this

http://como-reparar.com/guides/tumble-dryer-turning-find-fault-replace-motor-capacitor/

It seems like defective slider , ,check out each carefully and replace if needed such as roller, front seal or rear seal or loose blower fan blade assembly

This is a pretty simple dryer. Unplug it and pop the top then remove the front. The heater and limits are all mounted on the lower left hand side on the heating element.

While you is in there do a good cleanup and oil the rollers and idler. Use zoomspout oil.
Replace the belt if she looks worn out.

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

It is in the back left corner behind the drum,inside the cabinet.

Below are some links, courtesy of www.repairclinic.com, that will assist you in diagnosing/repair of your dryer. You may have to enter your model number in the search box to access some of the information.

Below is a parts breakdown/disassembly procedure for your dryer.
http://www.repairclinic.com/Dryer-Electric-Maytag-Style-Appliance-Diagram


The most common cause of a squeal is the drum roller, of which there are 2. It is usually a good idea to replace both rollers, roller shafts and drum belt at the same time, as they have a tendency to wear at the same rate. You must also use the proper lubricant on the roller shafts, (Syl-Glide), or you will have a recurrence of the squeal.

1. Drum Roller Image
http://www.repairclinic.com/SSPartDetail.aspx?s=t-pdet920ayw-%3d%3di966673&PartID=966673

If your dryer is noisy, check these:

Rollers
Idler pulley
Glides
Rear drum bearing
Blower wheel
Rollers Many dryers use rollers or wheels to support the clothes drum. When these rollers are worn, they can be noisy. You should replace the whole set of rollers at the same time.

Idler pulley Dryers have a tension or idler pulley that keeps tension on the main drive belt. When it's worn, it can be noisy. When that happens, don't lubricate it. Just replace it.

Glides Many dryers use nylon or plastic glides at the front of the clothes drum for support. When these are worn, they can be noisy. When that happens, replace them.

Rear drum bearing Some dryers support the clothes drum in the rear with a center spindle instead of rollers. The spindle may be a ball-and-socket type support or a shaft through a sleeve. When the components are worn, they may squeak, squeal, or rub. You can't repair them. Just replace them when they're worn.

Blower wheel Your dryer's blower wheel pulls air over the heat source, through the clothes drum, and past the thermostats, then pushes it out the exhaust duct. The blower wheel, which is usually plastic, may wear out over time. But if it's noisy, it may simply be clogged with lint. Clean the blower and test to see if the dryer is still noisy. If it is, you probably need to replace it.


You can also obtain more appliance information at my website, www.homemanagement.services.officelive.com

Flat side of the belt goes agaist the drum. The diagram is on the new belt

your timer is bad,the cost of a timer is close to a new dryer.

Go to this site for info on your dryer type, you may find what you need there...

http://www.applianceaid.com/ww-and-mc.html

It could very well be a thermostat problem, however, it could also be the drive motor itself starting to burn out. Some dryers are equipped with a "Thermal Limiter" that will cut the power to heat. It doesn't seem to be the case for you. I would defiantely look into another thermostat but if it comes down to the motor, depending on the price, You may want to buy a new dryer.