How to Troubleshoot & Replace Lg AP7220429 / 4581EL2002L Roller Kit

The rear right drum roller wasn't turning at all and after I changed it, that took care of the problem. 

Took the dryer apart section by section, found the dryer sheet as I was getting ready to remove the drum. 

Girly girl here! I did have my husbands help to take the dryer apart and assess the inside. After that I was on my own. My dryer is 15 yrs old so I replaced the 4 wheels, belt and the pulley unit due to age and already being inside the dryer. One wheel and pulley were tight to turn manually. We removed the the top and front panel and lifted out the drum. It involved unscrewing 5 bolts (if that's what they are called) putting the new parts on and re-screwing. I did need an extra hand to hold the drum while I attached the belt on the pulley. Once I put the front face and top on, I was good to go. It is running like new. 

Trying to remember where each screw went was a pain. But got it on. Parts were exact .... after assembly my dryer ran like there was nothing wrong with it at all. I’ll be back for further repair.... I’m sold. 

Using your video it was very easy to diagnose the problem, order the parts, disassemble the dryer step by step and reassemble all the parts. Even though the front rollers were the problem I opted for preventative maintenance and ordered and replaced all four rollers (two in front, two in the back). However, being older at age 77, I found it much easier to take the additional step (not on the video) of removing the back plate supporting the rear rollers and replacing them. It does require detaching and reattaching the heating element. I am glad I did as it allowed me to thoroughly inspect and clean the heating element. I also took the time to vacuum out the entire inside of the dryer structure from 10+ years of use. I also replace the dryer belt as part of preventative maintenance. Probably the most difficult part of the entire process was re-engaging the idler wheel for the dryer belt. All in all, it was a very rewarding experience! 

Replaced belt, idler pulley, and roller assembly. I found your web site while looking for the cost to replace the rollers. After watching your how to video, I ordered the parts and fixed the dryer. It was a easy job. It took longer to clean the dust and dirt out than to fix it. Thank you, it saved me hundreds of dollars. I will use you again when the next appliance breaks. 

Noisy - replaced the 2 front rollers ($60). No (or low) heat - replaced all of the parts that appliancepartspros recommended - 1 thermister and 3 thermostats ($50). Probably didn't need all these parts but since the dryer was already disassembled and cost of the parts was cheap, better replace them all now. The video on how to take the dryer apart was excellent and the entire repair operation was very simple based on the outstanding directions provided by appliancepartspros.com. I highly recommend them for all your appliance repair. 

Did a problem solve search on AppliancePartsPros and figured out that the problem is a common one and that the 4 drum rollers were probably at fault. I ordered the rollers and a new belt. The parts were inexpensive and the repair video was excellent. After disassembly of the dryer, I discovered that the rollers, while worn, were ok and I had to look further to find the "thump". Upon inspection of the drum itself, I discovered a 3 inch crack in the welded seam of the drum. This crack crossed the roller "channel" and each rotation would allow a roller to "fall" into the small gap and make the thump sound. Since I did not have a spare drum sitting on the shelf, I would attempt to repair the drum as best I could. I settled on using thick aluminum duct tape, using several layers to build a bridge over the cracked seam on both the inside and outside surfaces of the drum. The aluminum was thin enough to line the channel for the rollers so that the repair would not make its own thump. The aluminum tape is designed to seal heated ducts, but time will tell if the heat of the dryer is too much for the adhesive. Using the tape on the inside of the drum, if it holds, will minimize any risk of snagging any fabric in the dryer. I went ahead and changed the rollers and installed the new belt, buttoned up the dryer, tested it. Ran like a new unit, with no thumps. If the repair fails, then I will order a replacement drum. 

Replaced 4 roller bearings and the drive belt ... only one roller was bad... but once the machine was apart replacing them all seemed prudent. Disconnecting the electrical connectors was the hardest part of the job (the video made it look easy). I had to use a jeweler’s screw driver to get at the locking tab in the door switch. 

Replaced all rollers (4), replaced belt and censors (2), while everything was apart, vacuumed cleaned everything.