Bosch motor noise

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  • #38766
    robmarshall
    Participant

    I appreciate it is tricky to identify noises on t’internet but my washng machine’s motor is making a “scratching” noise intermittitantly on its washing cycle and also, when it is on its highest spin speed. As it increases its RPM on spin, it seems to be normal.

    The odd noise appears to come from the motor. The question is, shoud I continue using the machine (and risk damaging it). The model is WFL 2260.

    Many thanks!

    #259935
    cockney steve
    Participant

    Re: Bosch motor noise

    This could possibly be “bearing chatter” or “screech”…caused by dry,worn bearings ,the armature enters a resonant vibration phase….you are unlikely to do “serious”damage ,as it’ has already been done!
    (normal wear and tear! )

    However, if you ignore it, it will get worse and the bearings will collapse or sieze-up

    If your skills stretch to it, strip the motor, wash the (ballrace) bearings in petrol, pack 1/4 of the space with general-purpose HMP grease such as Castrol LM. (bearings may be shielded)

    It may be possible to use a hypodermic syringe, with a large needle, to inject a bit into the bearings without the stripdown.

    Not an ideal solution, but better than ignoring it!….motors are expensive!.
    (new bearings are relatively cheap and almost invariably they bear a generic universal size/type code )
    I assumed you have checked the motor-brushes and eliminated drum-bearings, also the drain-pump from your list !!!!

    UNPLUG BEFORE INVESTIGATING! Often, the NEUTRAL is switched,meaning LIVE components,even when switched off.


    As you say, hard to diagnose over the net!

    #259936
    Penguin45
    Participant

    Re: Bosch motor noise

    Check motor carbon brushes when you’re in there.

    Penguin45.

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