The rear cover of this unit was removed and all dirt was cleaned out in the bottom section Not very much was found. The main drum belt was in good condition . The small dirt extractor blower belt was not removed but it was in good condition with no significant damage noted. I reassembled the rear cover and started the unit back up and it cycled properly on both the timed dry or normal cycles. No unusual noise was noted. The lint filter indicator light did not come on although there were no clothing in the drum . No unusual noise was noted. Is there any adjustment or wear limit for the small belt mentioned in the repair manual as there is no spring loaded tensioner that I could observe, Any input from other techs would be appreciated ?