To remove this heating element you will first need to unplug the dryer, remove the back panel, remove the wires to the heating element. Next go to the front side of the dryer and remove the lint screen and remove the two screws around the opening, depress the two clips between the top lid and front panel this will allow you to lift up the top panel. With the top of the dryer open you will now have access to remove the screw at the top of the heater canister, once you remove the screw and bracket the entire heater element canister can be removed from the back side of the dryer. With the canister pulled out of the dryer you can remove the mounting screw and pull the old element out and slide the new one in. Reinstall in the reverse order. Let us know how the repair goes and if you have any questions.
This is the heating element for your model dryer:
Heating Element - Part # PD00002385 (mfg # 4391960)