Question about Bosch WFK 2401

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We have a Bosch WFK 2401 that is approximately 8 years old. I am not sure what cycle it was on when all of a sudden a loud noise started coming from the washer. Sounded like a gear stripping. A loud ratchiting sound. Was rapid and loud, not a tumbling sound if something is rolling around in the drum. Turned it off, noise stopped. Unloaded the washer, turned it on and drum started to turn and 4 to 5 seconds later loud noise came back. I am at the stage of trying to figure out how to get a look in side and see if there is anything obvious. Any comments? Thanks

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  • sclover Sep 29, 2009

    beltronic205

    Thank you for your reply. I checked the drum and there is a little play, I guess about a 1/16". Have not got the unit out and open yet so have not checked the springs. After I posted my problem I turned the washer on and the drum started to turn without the noise but the motor sounded louder. The drum turned for about 10-15 seconds then it and the motor stopped? Starting to wonder if I have a brush problem like some of the other posts. They have never been changed. Is it possible a part of a brush broke off and was banging around the motor/drum and that is the noise I heard? Taking the unit out today and opening it up to see if there is anything obvious and check the brushs. Thanks again for your reply

    sclover

  • sclover Sep 29, 2009

    beltronic205

    The springs were all attached. There was nothing obvious. The brushs were in tact, about an inch on each side.

    May be the bering. How much play if any can their be? When I hit the top of the drum from the inside there is sort of a vibration/loose/rattle sound. Do you get the same sound from your 2401? Thanks

  • sclover Sep 29, 2009

    Hello beltronic205 Thanks for your reply, I do appreciate it.



    Could not find any signs of oil from bering area at rear of outside drum. Pan is clean with no sigh of oil leak. If an inner bering is leaking the oil must mix with the wash water. There is a black residue (like bursh dust) that was in the trough in the bottom of the cleanout.



    Only oil I could find is a small amount on what are described on a parts list online as shock asorbers. Ours don't look like the parts list pictures, ours are square so I don't know if they are actual shock absorbers or some spring loaded set up that was oiled when installed.



    Inner drum turns fine with no noise. There is no up and down play but there is a slight in and out horazontal movement, just enough that you can hear it.



    I calculate the space between the inner drum and the outer drum at the rear of the washer to be about 3/4" Is that where the spider tripod assembly you mention is located? If there is a worn bering would this assembly rub on the outside drum?



    If you don't have any more suggestions I think I will put the motor back in, leave the back off, run it through a cycle with nothing in it and pay close attention to what happens and what noises I hear. If it is a bering I probably can't do any more damage.



    Thanks again for your time

  • sclover Oct 01, 2009

    Hello Gerry,



    I think I may have narrowed the problem down to a bering. I put the motor back in and ran a cycle with the machine empty. Everything went fine. During the high speed cycle I could hear a very slight ticking or rattling sound. Did a second cycle with a normal load and the noise was not as noticable. The drum did move around a lot more and never having seen this before seemed a little wild. I looked at the inside of the back pannel and noticed that the bold holding the large pully has been rubbing on the pannel. The noise I heard may have been the bolt hitting the pannel. The little in and out play in the bering may be just enough to allow this to happen when a cycle is at it most shaking stage. I also noticed a little black gummy slime and stains in the fold of the rubber seal which may be oil from a bering. We do not wash oily or really grimey cloths but this machine was given to us used so I don't know its history. (we have had it about 4 years)



    If it is not a bering it may be the springs and schocks are worn out enough to let the drum shake to much.



    I don't think anything broke off between the inner and outer drum as there is very little vibration once the cycle reaches full speed. If there was something in there I think it should shake more at these high speeds.



    Things are working OK now. The next time I hear the noise I plan to let it run to confirm that it is the back of the pully hitting the rear pannel. If it is a bering that is starting to go what should I look for next? Will it just seize up? Is this something that a layman like me could replace?



    Thanks again for all your help.



    Brian

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  • Bosch Master
  • 1,466 Answers

Check to see if inner drum is loose indicating bearing problem..Also check two springs on top of tub evident with lid off they can snap/ good luck

Posted on Sep 29, 2009

Testimonial: "Replyed to me a number times offering good advise which helped me narrow my problem down to the point where I think I know what the problem is. "

  • Gerry Harvey
    Gerry Harvey Sep 29, 2009

    Should not have looseness as such...Inner drum is fixed to a spider tripod assembly, this in turn has two bearings inner and outer larger one. it could be cracked leg on tripod is oil leaking from drum or is it noisy to spinn by hand remove belt first to check this..?

  • Gerry Harvey
    Gerry Harvey Sep 30, 2009

    You sound very keen...Try with the belt off turning the drum by hand it should run freely. Next listen for any abnormal noise ..The distance between the inner drum and outer if not very much and the heater sits in the space too...if anything is caught sometimes it rattles the heater ..You will hear this no need to take off otherwise, as it can be a bit of a bugger...I hope you manage to solve your problem if i can help any further just ask...Gerry

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