Here are your parts
Model LEA10AW

Here is a service manual which should come in handy
http://www.servicematters.com/m...ary/docs/RS3200005R2.pdf

Sounds like your motor is overheating and tripping it's internal thermal cutout. That is why it happens sooner the second time, the motor is already hot.

Rotate your drum by hand, it should turn fairly easily.
I know that is not a very good description so you may want to try this on a couple other dryers just to get a feel for it.
If it is hard to turn this may be putting too much load on the motor.
You will have to find out why it is hard to turn (rollers, glides etc.) and repair it.

Could be the motor is full of lint so is not getting any cooling.
If yes, clean the interior out and check the felt seals on the drum.

Remove the belt and turn the motor by hand should turn easily.
Check that the blower wheel is not clogged up with lint.

Clean and check your vent system.

After all this the most likely cause is that your motor is starting to go south, but the above is worth a try. You can never tell !!!