How to Troubleshoot & Replace Whirlpool AP6009646 / WP53-2287 Idler Assembly (Belt Tensioner)

Went online to find the parts breakdown. Ordered my parts and they were delivered the next day. 

I replaced all of the running parts that where warn-out and the dryer sounds and runs like new again. Thank You, S. Roman 

I watched one of the repair videos then decided to order the rear roller kit and idler assembly kit. After receiving parts (which shipped really fast), I knew exactly how to open up the unit and remove the drum and remove the worn parts. I recommend to watch the video before starting job, saved me lots of time. I had even made this same repair in 2004 but didn't remember all of the steps. Completed the project in about 40 min. Another note: Have a shop vac handy to clean out the lent and dust build up from years of use. Lent build-up slows the drying time and is also a fire hazard. Now my wife is happy and I don't have to listen to the squeaking. Runs like a new dryer. 

Took apart found cracked roller wheel and replace both rear guide wheels works great. 

New glides, idler had a crack, blower retaining ring was gone. And a good clean out. Like new again for 2 hours and $77.00 

Replaced roller set belt and idler arm assembly but not resolved problem . Called partspro talked to Shane he suggested to check exhaust fan sure it was broken. Replaced fan and all above parts. It works fine now.