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Crunching sound at the commencement of spin cycle

Hi,

Our Bosch Maxx 900 front loading washing machine crunches at the beginning of the spin cycle or when changing direction. Its like the sound of marbles rolling in the sealed unit behind the stainless steel drum. Could it be a broken drive or gears? Appreciate any suggestions as to what it might be.

Thanks

Michael

Posted by on

  • maeasey Nov 28, 2008


    Hi abhishek33,

    Thanks for your prompt reply.

    I've already removed the back and the belt looks OK.

    I haven't checked the pulley however. I'll do that next.

    Regards

    Michael

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Hi
The drive belt (or belts) of a washing machine may become worn or damaged, causing noisy operation or stopping the washer entirely. A damaged drive belt is easy to replace. Remove the back panel of the washer to gain access to the belt. To remove the belt:

Step 1: Loosen the bolt on the motor bracket and move the motor to put slack in the belt.

Step 2: Remove the old belt and stretch a new one into place on the pulleys.

Step 3: To put tension on the new belt, use a hammer handle or a short pry bar to push the motor into position while you tighten the bolt in the adjustable bracket. The belt should have about 1/2 inch deflection when you press on it at the center point, midway between the pulleys. If the belt is too loose, it will slip on the pulleys, causing the machine to malfunction. If the belt is too tight, it will wear very quickly and will probably become so hot that it will start to smoke or smell.

Loose pulleys can also cause problems. Most pulleys are fastened to shafts with setscrews around the hub of the pulley. These screws must be tight or else the pulley or belt will slip. The resulting malfunction may seem to be caused by a faulty motor, but it can be corrected by tightening the pulleys and adjusting the belt. For this reason, always check the belts and pulleys before working on the motor.

Posted on Nov 28, 2008

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