2 New Messages
Digest #2319
Messages
Tue Aug 27, 2013 8:14 pm (PDT) . Posted by:
"richinchicagousa" richinchicagousa
Thanks, guys, for the input. What (all of) you have written makes sense especially in light of the detective work I did over the weekend.
I believe that there are 2 separate problems. One is electronic, I suspect, due to a control (printed circuit) board issue. The other is mechanical - perhaps some sort of bearing noise.
I suspected an intermittent electrical connection and decided to pull the control board (located in the door below the touch panel) and re-solder a few questionable solder joints. This was difficult since the rear of the board is sealed with a heat-resistant clear coating. I had to scrape the coating away with an Exacto knife to get at the suspect connections. I also applied some contact cleaner to the connector at the edge of the board connected to the touch panel via a ribbon cable. I made sure that the contacts to the other connectors on the board were shiny, too.
After reassembly, the dishwasher began to once again function properly. I've run a handful of washes since Sunday morning and the machine has successfully started and completed a full cycle each time. So far so good ...
I also partially disassembled the motor/pump assembly. I actually found the area to be fairly free of debris (we're pretty careful about rinsing dishes). I found a small white plastic disk (size of a quarter) floating around, though. I'm not sure if it is part of the machine(!) or some remnant of an item that was meant to be washed.
The grinder blade seems to scrape against the perforated steel disk above it. I'm not sure if this is by design or not. What I did notice was a circular gasket (seal) protruding from the pump inlet(?) (not sure). One thing was clear, though. The seal wasn't doing its job.
Anyway, I attempted to re-seat the seal, and re-assembled everything. The squeal/whine continues to persist.
I'm thinking of just replacing the entire pump/motor assembly. I don't want to risk the possibility of water leaks due to leaky gasket and my inexperienced re-assembly. And I suspect that that would cure the bearing problem (if that's what it truly is).
I've already saved a bunch of $ by getting this far, resurrecting the control board, etc. I don't mind spending some $ on the part.
Though space is tight, replacing the motor pump assembly seems like it should be straightforward. After this, the machine should be good for quite a while, right???
-Rich
--- In appliance-repair@
>
>
> ------------
> On Thu, 8/22/13, Brad Woods <woods.brad@
> So the high pitch noise is either from the bearing or a seal around pump shaft.
>
> Some dishwasher actually bind between seal and a shaft, after a period of none use. You could squirt some WD-40, if you can get to it.
> No all oils are compatible with rubber, but but a little may not hurt. We don't even know if it's a bearing or the seal.
> Of course the sprying arm turs as well, but much slower, so a constant noise is more likely form faster turning part.
>
> RichK
>
>
>
> Subject: Re: [appliance-repair] Kitchen Aid Dishwasher KUDC25CHSS1 on the Fritz
> To: "appliance-repair@
> Date: Thursday, August 22, 2013, 11:38 PM
>
>
> Yes, that
> is correct Rich there is not belt in this machine nor is
> there a transmission. the motor drives the pump and
> disposer blade
> directly. Have
> some fun and try the DIY method!
> From: RichK
> <gs_biker1@
> To:
> appliance-repair@
>
> Sent:
> Thursday, August 22, 2013 5:53 PM
> Subject: Re:
> [appliance-repair] Kitchen Aid Dishwasher KUDC25CHSS1 on the
> Fritz
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> A high pitched noise sounds like a bearing in
> motor or transmission. Doubt there's a belt, which
> could also make some noise when slipping.
>
> And yes, belt can start and stop slipping. Not much to
> loose, if you "run it into the ground"
>
>
>
> The second problem seems independent. Now that you know how
> to reset it, again wait for it to fail. Replacing both,
> would be costly,
>
> if you pay someone to do it. Have no idea what the parts
> are.
>
>
>
> Both I consider DIY on a dishwasher. Take some patience,
> but can be done if you take pictures along the way, how
> things go back together.
>
>
>
> Regards...RichK
>
>
>
> ------------
>
> On Thu, 8/22/13, richinchicagousa <mailto:rich-
> wrote:
>
>
>
> Subject: [appliance-repair] Kitchen Aid Dishwasher
> KUDC25CHSS1 on the Fritz
>
> To: mailto:appliance-
>
> Date: Thursday, August 22, 2013, 12:03 PM
>
>
>
> For many weeks, our dishwasher has
>
> been making a fairly loud higher-pitched whistle/whine for
>
> the first few minutes of the wash cycle.
>
>
>
> What repair strategy would you suggest? I am not
>
> averse to spending $200-$350 in parts as this was one of
>
> KitchenAid&#
> control
>
> panel and the motor/wash arm assembly, what else would
>
> really go wrong with the machine?
>
>
>
> Model Number: KUDC25CHSS1
>
Wed Aug 28, 2013 12:38 am (PDT) . Posted by:
"Brad Woods" woods.brad
Good work, Rich!
However, if you did get the leak stopped, which is most likely what caused the bearing problem, then I would go ahead and lubricate both bearings with a penetrating oil. If your top bearing is running dry of lubricant because of the leak, it will eventually seize up on you.
I have save many a pump/motor with a penetrating oil. Give it a try and you may not have to replace the pump/motor assembly.
Once again, if your disposer blade is rubbing against the grind plate, this may also be contributing to the noise. I have taken the blade off and bent it back into alignment. It should spin on the shaft a come very close to the grind plate, but not quite touch it.
Wish you well.
________________________________
From: richinchicagousa <rich-alternate@sbcglobal.net >
To: appliance-repair@yahoogroups.com
Sent: Tuesday, August 27, 2013 8:14 PM
Subject: [appliance-repair] Re: Kitchen Aid Dishwasher KUDC25CHSS1 on the Fritz
Thanks, guys, for the input. What (all of) you have written makes sense especially in light of the detective work I did over the weekend.
I believe that there are 2 separate problems. One is electronic, I suspect, due to a control (printed circuit) board issue. The other is mechanical - perhaps some sort of bearing noise.
I suspected an intermittent electrical connection and decided to pull the control board (located in the door below the touch panel) and re-solder a few questionable solder joints. This was difficult since the rear of the board is sealed with a heat-resistant clear coating. I had to scrape the coating away with an Exacto knife to get at the suspect connections. I also applied some contact cleaner to the connector at the edge of the board connected to the touch panel via a ribbon cable. I made sure that the contacts to the other connectors on the board were shiny, too.
After reassembly, the dishwasher began to once again function properly. I've run a handful of washes since Sunday morning and the machine has successfully started and completed a full cycle each time. So far so good ...
I also partially disassembled the motor/pump assembly. I actually found the area to be fairly free of debris (we're pretty careful about rinsing dishes). I found a small white plastic disk (size of a quarter) floating around, though. I'm not sure if it is part of the machine(!) or some remnant of an item that was meant to be washed.
The grinder blade seems to scrape against the perforated steel disk above it. I'm not sure if this is by design or not. What I did notice was a circular gasket (seal) protruding from the pump inlet(?) (not sure). One thing was clear, though. The seal wasn't doing its job.
Anyway, I attempted to re-seat the seal, and re-assembled everything. The squeal/whine continues to persist.
I'm thinking of just replacing the entire pump/motor assembly. I don't want to risk the possibility of water leaks due to leaky gasket and my inexperienced re-assembly. And I suspect that that would cure the bearing problem (if that's what it truly is).
I've already saved a bunch of $ by getting this far, resurrecting the control board, etc. I don't mind spending some $ on the part.
Though space is tight, replacing the motor pump assembly seems like it should be straightforward. After this, the machine should be good for quite a while, right???
-Rich
--- In mailto:appliance-repair%40yahoogroups.com, RichK <gs_biker1@...> wrote:
>
>
> --------------------------------------------
> On Thu, 8/22/13, Brad Woods <woods.brad@...> wrote:
> So the high pitch noise is either from the bearing or a seal around pump shaft.
>
> Some dishwasher actually bind between seal and a shaft, after a period of none use. You could squirt some WD-40, if you can get to it.
> No all oils are compatible with rubber, but but a little may not hurt. We don't even know if it's a bearing or the seal.
> Of course the sprying arm turs as well, but much slower, so a constant noise is more likely form faster turning part.
>
> RichK
>
>
>
> Subject: Re: [appliance-repair] Kitchen Aid Dishwasher KUDC25CHSS1 on the Fritz
> To: "mailto:appliance-repair%40yahoogroups.com" <mailto:appliance-repair%40yahoogroups.com>
> Date: Thursday, August 22, 2013, 11:38 PM
>
>
> Yes, that
> is correct Rich there is not belt in this machine nor is
> there a transmission. the motor drives the pump and
> disposer blade
> directly. Have
> some fun and try the DIY method!
> From: RichK
> <gs_biker1@...>
> To:
> mailto:appliance-repair%40yahoogroups.com
>
> Sent:
> Thursday, August 22, 2013 5:53 PM
> Subject: Re:
> [appliance-repair] Kitchen Aid Dishwasher KUDC25CHSS1 on the
> Fritz
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> A high pitched noise sounds like a bearing in
> motor or transmission. Doubt there's a belt, which
> could also make some noise when slipping.
>
> And yes, belt can start and stop slipping. Not much to
> loose, if you "run it into the ground".
>
>
>
> The second problem seems independent. Now that you know how
> to reset it, again wait for it to fail. Replacing both,
> would be costly,
>
> if you pay someone to do it. Have no idea what the parts
> are.
>
>
>
> Both I consider DIY on a dishwasher. Take some patience,
> but can be done if you take pictures along the way, how
> things go back together.
>
>
>
> Regards...RichK
>
>
>
> --------------------------------------------
>
> On Thu, 8/22/13, richinchicagousa <mailto:rich-alternate%40sbcglobal.net>
> wrote:
>
>
>
> Subject: [appliance-repair] Kitchen Aid Dishwasher
> KUDC25CHSS1 on the Fritz
>
> To: mailto:appliance-repair%40yahoogroups.com
>
> Date: Thursday, August 22, 2013, 12:03 PM
>
>
>
> For many weeks, our dishwasher has
>
> been making a fairly loud higher-pitched whistle/whine for
>
> the first few minutes of the wash cycle.
>
>
>
> What repair strategy would you suggest? I am not
>
> averse to spending $200-$350 in parts as this was one of
>
> KitchenAid's higher-end machines. Besides the
> control
>
> panel and the motor/wash arm assembly, what else would
>
> really go wrong with the machine?
>
>
>
> Model Number: KUDC25CHSS1
>
However, if you did get the leak stopped, which is most likely what caused the bearing problem, then I would go ahead and lubricate both bearings with a penetrating oil. If your top bearing is running dry of lubricant because of the leak, it will eventually seize up on you.
I have save many a pump/motor with a penetrating oil. Give it a try and you may not have to replace the pump/motor assembly.
Once again, if your disposer blade is rubbing against the grind plate, this may also be contributing to the noise. I have taken the blade off and bent it back into alignment. It should spin on the shaft a come very close to the grind plate, but not quite touch it.
Wish you well.
____________
From: richinchicagousa <rich-alternate@
To: appliance-repair@
Sent: Tuesday, August 27, 2013 8:14 PM
Subject: [appliance-repair] Re: Kitchen Aid Dishwasher KUDC25CHSS1 on the Fritz
Thanks, guys, for the input. What (all of) you have written makes sense especially in light of the detective work I did over the weekend.
I believe that there are 2 separate problems. One is electronic, I suspect, due to a control (printed circuit) board issue. The other is mechanical - perhaps some sort of bearing noise.
I suspected an intermittent electrical connection and decided to pull the control board (located in the door below the touch panel) and re-solder a few questionable solder joints. This was difficult since the rear of the board is sealed with a heat-resistant clear coating. I had to scrape the coating away with an Exacto knife to get at the suspect connections. I also applied some contact cleaner to the connector at the edge of the board connected to the touch panel via a ribbon cable. I made sure that the contacts to the other connectors on the board were shiny, too.
After reassembly, the dishwasher began to once again function properly. I've run a handful of washes since Sunday morning and the machine has successfully started and completed a full cycle each time. So far so good ...
I also partially disassembled the motor/pump assembly. I actually found the area to be fairly free of debris (we're pretty careful about rinsing dishes). I found a small white plastic disk (size of a quarter) floating around, though. I'm not sure if it is part of the machine(!) or some remnant of an item that was meant to be washed.
The grinder blade seems to scrape against the perforated steel disk above it. I'm not sure if this is by design or not. What I did notice was a circular gasket (seal) protruding from the pump inlet(?) (not sure). One thing was clear, though. The seal wasn't doing its job.
Anyway, I attempted to re-seat the seal, and re-assembled everything. The squeal/whine continues to persist.
I'm thinking of just replacing the entire pump/motor assembly. I don't want to risk the possibility of water leaks due to leaky gasket and my inexperienced re-assembly. And I suspect that that would cure the bearing problem (if that's what it truly is).
I've already saved a bunch of $ by getting this far, resurrecting the control board, etc. I don't mind spending some $ on the part.
Though space is tight, replacing the motor pump assembly seems like it should be straightforward. After this, the machine should be good for quite a while, right???
-Rich
--- In mailto:appliance-
>
>
> ------------
> On Thu, 8/22/13, Brad Woods <woods.brad@
> So the high pitch noise is either from the bearing or a seal around pump shaft.
>
> Some dishwasher actually bind between seal and a shaft, after a period of none use. You could squirt some WD-40, if you can get to it.
> No all oils are compatible with rubber, but but a little may not hurt. We don't even know if it's a bearing or the seal.
> Of course the sprying arm turs as well, but much slower, so a constant noise is more likely form faster turning part.
>
> RichK
>
>
>
> Subject: Re: [appliance-repair] Kitchen Aid Dishwasher KUDC25CHSS1 on the Fritz
> To: "mailto:
> Date: Thursday, August 22, 2013, 11:38 PM
>
>
> Yes, that
> is correct Rich there is not belt in this machine nor is
> there a transmission. the motor drives the pump and
> disposer blade
> directly. Have
> some fun and try the DIY method!
> From: RichK
> <gs_biker1@
> To:
> mailto:appliance-
>
> Sent:
> Thursday, August 22, 2013 5:53 PM
> Subject: Re:
> [appliance-repair] Kitchen Aid Dishwasher KUDC25CHSS1 on the
> Fritz
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> A high pitched noise sounds like a bearing in
> motor or transmission. Doubt there's a belt, which
> could also make some noise when slipping.
>
> And yes, belt can start and stop slipping. Not much to
> loose, if you "run it into the ground"
>
>
>
> The second problem seems independent. Now that you know how
> to reset it, again wait for it to fail. Replacing both,
> would be costly,
>
> if you pay someone to do it. Have no idea what the parts
> are.
>
>
>
> Both I consider DIY on a dishwasher. Take some patience,
> but can be done if you take pictures along the way, how
> things go back together.
>
>
>
> Regards...RichK
>
>
>
> ------------
>
> On Thu, 8/22/13, richinchicagousa <mailto:rich-
> wrote:
>
>
>
> Subject: [appliance-repair] Kitchen Aid Dishwasher
> KUDC25CHSS1 on the Fritz
>
> To: mailto:appliance-
>
> Date: Thursday, August 22, 2013, 12:03 PM
>
>
>
> For many weeks, our dishwasher has
>
> been making a fairly loud higher-pitched whistle/whine for
>
> the first few minutes of the wash cycle.
>
>
>
> What repair strategy would you suggest? I am not
>
> averse to spending $200-$350 in parts as this was one of
>
> KitchenAid&#
> control
>
> panel and the motor/wash arm assembly, what else would
>
> really go wrong with the machine?
>
>
>
> Model Number: KUDC25CHSS1
>
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