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- This topic has 14 replies, 3 voices, and was last updated 8 years ago by
Mattypompy99.
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AuthorPosts
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March 31, 2018 at 4:53 pm #93641
Mattypompy99
ParticipantHi guys,
I have a Zanussi zwd1252w and it recently had a failed heating element that I’ve just replaced. Now that is working fine and not tripping the RCD but I have a new issue.
On spin, over a certain rpm there is a regular rhythmic quite loud knock on every revolution. Ie the faster the spin the more frequent the knock.
Any ideas? The sound seems to be emanating within the drum casing. What about the heating element bracket inside the drum? The sound wasn’t there before the element failed.Thanks awfully!
MMarch 31, 2018 at 5:29 pm #455099electrofix
ModeratorRe: Knocking on spin cycle, help please?
when you replaced the heater did you ensure the end went into the restraint.
if it did not it can wobble and catch the drumDave
March 31, 2018 at 5:33 pm #455100Martin
ParticipantRe: Knocking on spin cycle, help please?
It could be the drum support spigot has broken? Easily spotted from the front as the drum rotates a little off centre as it rotates at low speed. Just remove the belt then spin drum by hand and see if it has a very slight elliptical orbit.
March 31, 2018 at 5:40 pm #455101Mattypompy99
ParticipantRe: Knocking on spin cycle, help please?
electrofix wrote:when you replaced the heater did you ensure the end went into the restraint.
if it did not it can wobble and catch the drumDave
Yes I saw that restraint. Maybe I didn’t locatte it correctly. Thanks. I’ll take the element out and have a look. I guess I just put it in and ensure it feels secure?
Thank youMarch 31, 2018 at 5:42 pm #455102Mattypompy99
ParticipantRe: Knocking on spin cycle, help please?
Martin wrote:It could be the drum support spigot has broken? Easily spotted from the front as the drum rotates a little off centre as it rotates at low speed. Just remove the belt then spin drum by hand and see if it has a very slight elliptical orbit.
Thanks Martin. I’ll check that out. I was reading about spider support arms too!
Cheers bud
April 1, 2018 at 5:29 am #455103Mattypompy99
ParticipantRe: Knocking on spin cycle, help please?
Martin wrote:It could be the drum support spigot has broken? Easily spotted from the front as the drum rotates a little off centre as it rotates at low speed. Just remove the belt then spin drum by hand and see if it has a very slight elliptical orbit.
Hi Martin,
After flooding the kitchen floor again! (Did a drain cycle then removed element thinking it was empty!) I removed belt and spun drum.
There is a slight bearing crunch noise but the drum spins freely with no resistance. There is a slight elliptical spin. I would estimate about 7mm in the vertical. Is that an issue?
Also with the element removed I couldn’t replicate the knock spinning manually. I think it may be catching on the drum when on spin cycle. Also one of the springs is a bit squeaky but the dampers seem OK.
I intend to do a dry spin cycle minus the element to check for the knock next.
Any other suggestions? :snig:
Thank you kindly for the input :tup:
Element bracket above.
April 1, 2018 at 7:14 am #455104Martin
ParticipantRe: Knocking on spin cycle, help please?
I couldn’t figure the photo of the bracket though the other photo collection was interesting 😉
That elliptical movement you describe is what I was afraid of. It could well be that the drum spigot (one of the 3 arms) has fractured. 🙁
April 1, 2018 at 8:29 am #455105Mattypompy99
ParticipantRe: Knocking on spin cycle, help please?
It was awkward to he the right snap as I had to hold a lamp to shine in at the same time. Basically the weird shaped metal thing top rightish is the element support bracket in the element aperture.
Looking at it on the pic it looks kind of bent actually? Might be catching on the drum. If its a spigot is it a right off do you think?
What other photo collection?! 😮
April 1, 2018 at 9:08 am #455106electrofix
ModeratorRe: Knocking on spin cycle, help please?
we seem to have more than one photo on that link including some that seem to be about parking violations around Portsmouth council
as martin said you heater mounting photo of well out of focus and cant be seen properly
also if your drum spider has failed this look like the correct one
https://shop.ukwhitegoods.co.uk/5025301 … rum-spiderbut its a big strip down to fit it
DaveApril 1, 2018 at 11:50 am #455107Mattypompy99
ParticipantRe: Knocking on spin cycle, help please?
Oic what you mean now! I didn’t think the other photos were viewable!
Thought the parking fine ones were on a separate URL! Oh well could’ve been worse! 👿 😛 :rotfl: I got off one!
I’ll try and get a better bracket pic. Its difficult though. I think I may have bent it inadvertently on element install. May just need a little tweaking hopefully.
Thanks
April 4, 2018 at 3:05 pm #455108Mattypompy99
ParticipantRe: Knocking on spin cycle, help please?
OK. I’ve had another look inside the tub through the element aperture and can’t see any obvious catching objects.
The spin of the drum is smooth and silent. The terminal ends of the spider arms seem secure by feel.
Here are a couple of flicks. Spielberg isn’t worried!
I don’t mind doing stripping it to replace the spider, found one for £45, but am debating getting a borescope to look first instead of a strip. Thanks for link btw Dave.
I’ll do a spin test minus element first.
https://www.flickr.com/photos/71043822@ … res/t1623E
Cheers😆
April 4, 2018 at 5:38 pm #455109Mattypompy99
ParticipantRe: Knocking on spin cycle, help please?
Mattypompy99 wrote:OK. I’ve had another look inside the tub through the element aperture and can’t see any obvious catching objects.
The spin of the drum is smooth and silent. The terminal ends of the spider arms seem secure by feel.
Here are a couple of flicks. Spielberg isn’t worried!
I don’t mind doing stripping it to replace the spider, found one for £45, but am debating getting a borescope to look first instead of a strip. Thanks for link btw Dave.
I’ll do a spin test minus element first.
https://www.flickr.com/photos/71043822@ … res/t1623E
Cheers😆
It won’t go into spin only cycle now. I do have the element removed and the water off though 😮April 4, 2018 at 11:40 pm #455110electrofix
ModeratorRe: Knocking on spin cycle, help please?
video is a bit difficult to see. if your camera stayed in one place it would be easier to see
look in the door of the machine and spin the drum there. look at the drum front lip and see how much run out there is. a small amount is ok but over about quarter inch and it could be a spider crack. if there is a crack in one let the drum will bend the remaining legs and start to hit things
did you look at the heater for signs of metal to metal contact. more important did you check the old one
Dave
April 5, 2018 at 12:21 am #455111Mattypompy99
ParticipantRe: Knocking on spin cycle, help please?
electrofix wrote:video is a bit difficult to see. if your camera stayed in one place it would be easier to see
look in the door of the machine and spin the drum there. look at the drum front lip and see how much run out there is. a small amount is ok but over about quarter inch and it could be a spider crack. if there is a crack in one let the drum will bend the remaining legs and start to hit things
did you look at the heater for signs of metal to metal contact. more important did you check the old one
Dave
Yes it was difficult to keep steady lying upside down on the floor with a light!!!
I did look for metal to metal contact on the new heater, the knocking wasn’t present before, and couldn’t see any.There’s a few mills run out but not too extreme.
Will try a wet cycle tomorrow.
Thanks again Dave :tup:
April 6, 2018 at 3:05 am #455112Mattypompy99
ParticipantRe: Knocking on spin cycle, help please?
SOLVED!
Working now! It was one of two things. Either, as Dave said, a poorly seated element on the restraint. Took it out and replaced carefully.Or I noticed a drying pipe loose from a drying fan. It could have knocked on the tub on spin. Think it was the first issue, so cheers Dave!
Two weeks of washing to catch up on! :tup: :rotfl:
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