I just replaced torsion spring 4452396 on my microwave. We heard a "pop" and then the door got heavy. here are a couple things I learned...THE HARD WAY!
We had the stainless steel front to the door and needed spring 4452396, not 4451008. The stainless steel door is heavier so therefore a stiffer spring. I'm not sure i could justify the 4x cost in the part...but that's just the way it is. It's a bit of a pain to repair the thing..so it's worth it to get the correct spring. You don't wan to be doing this every couple of of months!
You have to remove the front panel of the door to access the springs. there are 2 of them...they cross each other in an "x" pattern on the lower part of the door. We had to pull the unit out a bit to get the spring in the hole for correct position. No need to remove the door etc. If you need help with this...email me.
My mistake was when I was trying to figure out how to gain access to the springs I assumed you did from the inside of the door. I removed the two black things you see on the lower right/left of the door (screw on the bottom of them) then proceeded to remove the two recessed screws on the inside top corners of the door. Well next thing i know.....CRASH! the whole front of the door fell off and shattered! Come to find out those screws and brackets on the bottom hold the face of the door on. The glass is intergrated into the color panel of the door..so it's one piece! 150.00 later and a new piece of glass/panel i learned a hard lesson.
Let me know if you need help...it's fairly easy to do now that I look back on it. dave [email protected]