Whistling Noice Fusing Unit 4- and 8-Series

[CP-1015]

Is there any solutions for whistling noice from fusing unit 4- and 8-Series?
Thanks advanced!

[copyman]

Re: Whistling Noice Fusing Unit 4- and 8-Series

Is there any solutions for whistling noice from fusing unit 4- and 8-Series?
Thanks advanced!

If noise is happening when sitting idle it's the "small" bearings in the fuser unit. There are 4 "small" bearings in fuser unit, 2 for lower roller and 2 for orange sponge roller inside belt. They are sealed bearings and when they start to make noise they need to be replaced. You can lube but noise will come back.

[CP-1015]

Re: Whistling Noice Fusing Unit 4- and 8-Series

If noise is happening when sitting idle it's the "small" bearings in the fuser unit. There are 4 "small" bearings in fuser unit, 2 for lower roller and 2 for orange sponge roller inside belt. They are sealed bearings and when they start to make noise they need to be replaced. You can lube but noise will come back.

Thank you very much! Do you know any supplier for the bearings?

[copyman]

Re: Whistling Noice Fusing Unit 4- and 8-Series

Thank you very much! Do you know any supplier for the bearings?

Copylite products:

Copylite - Aftermarket, Compatible, and OEM Copier Supplies and Products

The fuser has to be disassembled to install bearings. You can do one bearing a time without removing the rollers.

First time doing it may seem difficult but just lay everything in order as it's removed and reverse order to put back together.

[CP-1015]

Re: Whistling Noice Fusing Unit 4- and 8-Series

Copylite products:

Copylite - Aftermarket, Compatible, and OEM Copier Supplies and Products

The fuser has to be disassembled to install bearings. You can do one bearing a time without removing the rollers.

First time doing it may seem difficult but just lay everything in order as it's removed and reverse order to put back together.

Thank you very much! I swapped already a fuser belt.

[copyman]

Re: Whistling Noice Fusing Unit 4- and 8-Series

Thank you very much! I swapped already a fuser belt.

If you did belt already then this will seem easy!

[CP-1015]

Re: Whistling Noice Fusing Unit 4- and 8-Series

One bearing was stiff. Swapped both and band.
But the old mistake remained: a rattling noise and a small spring hanging loose. (It wasn't the fuser with the whistling noise). Does anyone know the cause? Thanks advanced.

[copyman]

Re: Whistling Noice Fusing Unit 4- and 8-Series

One bearing was stiff. Swapped both and band.
But the old mistake remained: a rattling noise and a small spring hanging loose. (It wasn't the fuser with the whistling noise). Does anyone know the cause? Thanks advanced.

Again if only happening when sitting idle then it has to be something with the fuser unit as that is only thing that moves when sitting idle. Your post states you replaced 2 bearings, actually there are 4 small bearings in that fuser unit. Also think a fan runs for awhile after last page exits copier.

If a spring is hanging loose then I would look at that causing the noise. Can you send picture of where this spring is or do you have another machine to see where that spring is suppose to be and perhaps swap fuser units to see if noise goes away?

[CP-1015]

Re: Whistling Noice Fusing Unit 4- and 8-Series

Again if only happening when sitting idle then it has to be something with the fuser unit as that is only thing that moves when sitting idle. Your post states you replaced 2 bearings, actually there are 4 small bearings in that fuser unit. Also think a fan runs for awhile after last page exits copier.

If a spring is hanging loose then I would look at that causing the noise. Can you send picture of where this spring is or do you have another machine to see where that spring is suppose to be and perhaps swap fuser units to see if noise goes away?

I tested the fuser in another machine: noice walks with fuser. Yes, I have only swaped two small bearings because the others are ok. The small springs were to long. After swapping no longer hanging loose. But the noice is there still opening front door. Since issue with spring is solved, print quality is perfect.

[tsbservice]

Re: Whistling Noice Fusing Unit 4- and 8-Series

One bearing was stiff. Swapped both and band.
But the old mistake remained: a rattling noise and a small spring hanging loose. (It wasn't the fuser with the whistling noise). Does anyone know the cause? Thanks advanced.

Can you upload somewhere the noise and post here link?

[CP-1015]

Re: Whistling Noice Fusing Unit 4- and 8-Series

Can you upload somewhere the noise and post here link?

I'll try, tomorrow.

[CP-1015]

Re: Whistling Noice Fusing Unit 4- and 8-Series

Is it possible to load a file 001.3ga here up? I swaped the other small bearings, too. But they are ok. It sounds like sparks. And now there is error C5501.

[copyman]

Re: Whistling Noice Fusing Unit 4- and 8-Series

I tested the fuser in another machine: noice walks with fuser. Yes, I have only swaped two small bearings because the others are ok. The small springs were to long. After swapping no longer hanging loose. But the noice is there still opening front door. Since issue with spring is solved, print quality is perfect.

Good that you know it's the fuser for sure.

If the noise "walks" with fuser and makes the noise in another machine than you need to replace the other 2 bearings even if you think they are ok. Or perhaps the ones you put in there were bad if not new?

The bearings are only thing I've had to replace for noise in that fuser and I've done many just replacing bearings! Of course I replace all 4 bearings automatically when I rebuild the fuser units using aftermarket belt & pressure roller

[CP-1015]

Re: Whistling Noice Fusing Unit 4- and 8-Series

Good that you know it's the fuser for sure.

If the noise "walks" with fuser and makes the noise in another machine than you need to replace the other 2 bearings even if you think they are ok. Or perhaps the ones you put in there were bad if not new?

The bearings are only thing I've had to replace for noise in that fuser and I've done many just replacing bearings! Of course I replace all 4 bearings automatically when I rebuild the fuser units using aftermarket belt & pressure roller

In desperation, I also swapped the other two small bearings. I only use new ball bearings. Unfortunately I cannot upload a sound file.

[tsbservice]

Re: Whistling Noice Fusing Unit 4- and 8-Series

In desperation, I also swapped the other two small bearings. I only use new ball bearings. Unfortunately I cannot upload a sound file.

You cannot here but can upload it somewhere and post a link.