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HomeRepair HelpBosch Dryer RepairBosch Dryer makes noise Repair
Bosch Dryer makes noise
If your Bosch dryer is making loud noise when the drum turns, start with the things that fail most often and work down the list. A frayed or damaged drive belt is the usual culprit, so inspect the belt for wear and replace it if it’s glazed, cracked, or fraying. Next check the drum rollers and their axles; worn rollers or axle wear cause rumbling and wobble and are a common reason for a dryer making noise when the drum turns. Make sure the dryer is level, since uneven feet speed wear on bearings and glides. Inspect the blower wheel for trapped lint or small garments and for a wobbly sleeve that makes grinding or rattling sounds. Finally, a worn drum bearing will make squeaking or grinding and make the drum hard to turn. You can remove the belt and turn the drum by hand to isolate rollers, axles, blower or bearing problems. Enter your model number on RepairClinic.com to find the exact replacement part for your specific dryer and get step-by-step parts and repair guidance.
01 - Bosch Dryer Drive Belt
The drive belt is a very long, slender belt that wraps all the way around the dryer drum, around a tension pulley, and then around the drive motor. Over time, the drive belt can become frayed or otherwise damaged. If the drive belt is frayed or damaged, the dryer will be noisy as it turns. Inspect the drive belt for signs of wear. If the drive belt is worn, replace it.
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02 - Bosch Dryer Drum Roller
One or more of the drum rollers might be worn out. Many dryers have two drum support rollers on the rear of the drum, and some dryers have two more rollers supporting the front of the drum. When the drum rollers are worn out, they can cause the dryer to make a loud rumbling noise. To determine if the rollers are worn out, inspect the rollers. If one or more of the rollers are severely worn, we recommend replacing all of the rollers at the same time as a preventative measure. (The roller shaft can often be reused if it is in good condition. Clean the shaft thoroughly before installing the new rollers.)
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03 - Bosch Dryer Drum Roller Axle
One or more of the drum roller axles might be worn out. Most dryers have two drum support rollers on the rear of the drum, and some dryers have two more rollers supporting the front of the drum. Over time, the drum rollers and axles wear out, causing the dryer to make a loud rumbling noise. To determine if the drum roller axles are worn out, remove the belt from the dryer and try turning the drum by hand. If the drum does not rotate freely, check the support rollers for wear. If the rollers spin freely without wobbling, the axles do not need to be replaced. If a roller wobbles and/or does not spin freely, we recommend repl...
Highly Likely
04 - Dryer is not level
Confirm the dryer is level. A dryer that is not level can cause excessive wear on certain parts such as bearings and glides, resulting in noisy operation. If the dryer is not level, adjust the leveling legs as necessary.
Highly Likely
05 - Bosch Dryer Blower Wheel
The blower wheel draws air through the dryer and pushes the air out the vent. Clumps of lint, socks, and small articles of clothing can escape the lint filter and get caught in the blower wheel. If an object is caught in the blower wheel, the dryer may make noise. In addition, the blower wheel sleeve can wear out, allowing the blower wheel to wobble on the motor shaft. To determine if the blower wheel is working properly, remove the dryer vent and assess the strength of the air flow. If the air flow is weak, check the blower wheel for obstructions. If no obstructions are present, try rotating the blower wheel by hand. If t...
Highly Likely
06 - Bosch Dryer Drum Bearing
The drum bearing supports the rear of the dryer drum. Over time, the drum bearing wears out. If the drum bearing is worn out, the dryer may make noise. To determine if the drum bearing is at fault, remove the dryer belt and try turning the drum by hand. If the drum rotates freely, it is unlikely that the drum bearing is worn out. If the drum makes squealing or grinding sounds when turned and/or is hard to turn, check the drum bearing and replace it if necessary.
Highly Likely
Frequently Asked Questions
Dryer making grinding noise when drum turns — what parts should I check?
Dryer squeaking when drum turns — what's causing the squeak?
Dryer making loud noise — could the blower wheel be the problem?
Can an unlevel dryer cause noisy operation?
How do I enter my model number or part number on RepairClinic to find the right replacement part?
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