Question about Brother MFC-8440 All-In-One Laser Printer

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Brother 8840 Fuser Roller Gear

The black rollers that pull the paper through the fuser and onto the output tray are attached to a gear. The rollers broke off the gear and I'm wondering if that part is available anywhere or if an entire fuser assy needs to be purchased. Does anyone know? And if it is available solo, what is the part number?


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Re: Brother 8840 Fuser Roller Gear

You can buy the gear , I always just replace assembly to reduce possibility of later breakdown

you can Purchase gear or Fuser HERE

Posted on Dec 16, 2007

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Brother mfc 9880 fax/copier makes grinding noise and has paper jams

Probably a broken Hot Roller gear in the fuser. The fuser is the section in the back, that presses the print between a pair of hot rollers to melt the powdered toner into the paper, making the image permanent. That combination of heat and pressure makes the fuser vulnerable to breakage in any laser printer or copier. The HR (hot roller) gear is a ring around one end of the heated roller, and it sometimes breaks apart.
The MFC 9880 isn't listed on Brother's US service website, so I can't tell you whether you need to buy a whole fuser assembly or just that gear.

Mar 31, 2010 | Brother MFC-8860DN All-In-One Laser...

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Ricoh CL 7100 fuser jam.

The grinding noise is the clashing of gears. The fuser is composed of 2 rollers, a metal or ceramic with a heater inside (bulb) and a silicon roller to apply pressure. The 'hot' roller is geared and the silicon roller can be geared or free floating. There is at least 1 paper sensor in the the fuser to let the unit know whether paper is there and there when it should or should not be. Sometimes, the sensor gets slightly dislodged and can actually cause a jam. If you are hearing a gear clash, the paper is being pushed through the machine and instead of being pushed through the fuser, it stops because the fuser rollers are not turning. The rest of the machine keeps pushing, crinkling the paper.
If there is crinkling, then gears that drive the fuser need to be checked. It is this gear cluster and/or the fuser that need to be replaced.

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Ruppled printed paper cannot exit output tray

you need do follow steps:
1) check fuser unit, the fuser hot roller is hot or not? if not the fuser heater fail.
2) check hot roller should spin with the pressure roller which is against hot roller, and check there is no gap between them, and also nothing pieces paper obstruct there, because if it losts pressure balance that jam should be occured there.
3) check the output roller after fuser unit(if there is), check them are spin or not, this roller kit use for pull the paper goes out the tray. if not spin means the roller drive belt or gear loosen.
3) check paper sensor that is micro swtch around pulling roller or output area and to clean it (could be a optical sensor).
hope help you something fixed, please take a rating let me know how much helped you thanks! keep in touch your question

May 25, 2009 | Samsung ML-2510 Laser Printer

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HP LJ P3005 13.31.00 ERROR

As i can understand whenever you try to print with rear door closed printed page should come on top from top output roller however paper gets jammed.
Try to print a page using rear door open and it should come out from the rear drop down tray it printed page comes out successfully with rear flap open than paper gets jammed at top due to faulty top output roller.
However if the paper gets jammed at fuser with rear door closed than it is issue with fuser in that case you need to get fuser replaced at the same time replace 20 tooth gear next to fuser.

Thanks and Regards
Neeraj Sharma

Apr 11, 2009 | HP LaserJet P3005n Printer

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13 Paper Jam - but there is no paper inside!

I have a long solution (possibly) to your issue:

Error 13 Paper Jam
  • Paper jams can occur in 3 places: Entry, registration and exit.
  • If the paper isn't picking up out of the paper tray, visually inspect the pickup roller. If it looks shiny, replace it. You should also replace the separation pad as they work together. On the 4L/4P/5P/6P the pickup roller has a plastic shaft that breaks. You'll have to replace the whole pickup assembly. This requires major disassembly of the printer. Check our printer repair kits for your model printer. If you don't see it listed, email us.
  • If you have an HP 4/4+/5 with an optional 500 sheet feeder that's jamming, check the balance knob adjustment. Center it with a full **** of paper for proper operation.
  • If the paper is jamming at registration or anywhere between pickup and exit it could be a number of things. Check the paper path for torn bits of paper or label residue. On the II/III series, remove the metal registration guide plate (2 screws) and check underneath it. If the pickup rollers are moderately worn, the paper will stop just short of the registration roller. On the 4L/4P/5P/6P remove the screw holding the oblique roller assembly (Inside front of printer) and pull out and inspect the assembly and the area under it. On the HP 4/4+/5 pivot up the metal plate and check underneath it. Check the roller assembly on the left side for torn scraps of paper (a flashlight or torch is necessary).
  • Make sure paper cassettes are firmly seated, corner tabs aren't bent. Some trays have lifting springs that could pop out if tray has been dropped.
  • On HP IIP/IIP+/IIIP printers if the paper scrunches up at the toner cartridge you'll need our Inside Accordion Jam Repair Kit.
  • Check your software settings in the program you are attempting to print from. Do you have the correct paper size specified? If you have a different paper size than what is in the tray, you'll get a paper jam.
  • Exit jams are frequently caused by exit sensors. These sensors are typically mounted on the fuser assembly or adjacent to it. They are plastic arms that block and unblock an optical sensor. The arms can get stuck or knocked out of place when clearing paper jams. The optical sensors can also get dirt blocking the photo cell. Clean the sensor and check for free movement and proper installation of the sensor arms.
  • On HP II/III series exit jams are mostly caused by worn gears. The best way to troubleshoot this is to defeat the door interlock (see door interlock photo on troubleshooting page). Press down on the arm on the top right of the fuser. Initiate a test page. While holding down the arm, press one of the metal cartridge detect switches just below the door interlock. Watch the movement of the gears. You will get a 51 error because the door is open. Recycle power to get rid of error. There is an arm gear on the lower right of the fuser that can shed teeth. There is also a 14 tooth gear below the large gear on top of the fuser. You can also manually rotate the large gear and check for binding or crunching. If that happens, then replace the 14 tooth gear. On the door, there are some delivery coupler gears that mate with the fuser and drive the exit roller. Check the gears for excessive wear. Replace if necessary. If the paper gets almost all the way out and jams, replace the exit roller or the exit roller assembly. If the error occurs after fuser replacement, check and see if the connector on the left of the fuser is properly mated with the one in the printer.
  • On HP IIP/IIP+/IIIP printers if the paper has accordion folds on the bottom and jams on exit, order our Top Output Accordion Jam Repair Kit.
  • On HP 4/4+/5 printers the most common cause of exit jams is the exit assembly. Order our 4/4+/5 Exit Jam Repair Kit. Exit jams in the fuser can be caused by a broken fuser drive gear or a broken gear on the fuser. Remove the fuser and check the gear inside the printer for broken teeth. Manually turn the gears on the fuser and check for smooth operation. Check the paper exit sensor arm for proper mounting and free movement.
  • Check to make sure the rear door is closed on the printer. Open doors can cause 13 paper jam indications.
  • On the 5L/6L check the registration sensor arm below the pickup roller. Also check the exit sensor arm (bottom center of the fuser). These arms frequently get stuck or dislodged clearing paper jams. On these printers, if you are experiencing frequent paper jams, order our 5L/6L Multi-Sheet/No Feed Repair Kit
All this comes from:

Good luck with it, I love the HP LaserJet 4 series of printers. I used to warm my coffee on the top of the fuser when I was doing large print jobs :-)

If this information helps, please give me a rating, thanks!


Apr 07, 2009 | HP LaserJet 4 plus Printer

1 Answer

HP Laserjet 4100 series , paper jam output tray.( on top of the printer ). The roller under the topcover is turning the wrong way. The paper can't get out of the printer, and jams between the upper roller...

Hi F_bulsara,
First thing to try is to flip the paper over in the input tray. There are 2 sides to paper. One side may curl a bit too much due to heat of the fuser and get caught near the output rollers.

Unless the Output Assembly was assembled wrong, it is impossible for the rollers to turn the wrong way. The gear in the fuser drives the output assembly. The top rollers are rolling out.
If the rollers are not rolling, then one of the gears must be broken or missing. The output rolllers might need cleaning.

Next check the fuser unit. Disconnect power to printer and turn printer round. Remove the back output tray and the two small covers (left and right). Undo the 2 screws that hold the fuser in place. Pull the fuser out. Check the gears on side of the fuser. A broken gear in the fuser could cause this problem.


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Clear the paper jam. To see paper jams and how to clear them, click here. If the printer does not start printing, press the control panel button.

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hi im jules_09,there must be a small piece of paper stocked at the output tray.see if you can open the front door then full out the fusing unit somtimes paper is stocked in it.then while the fuser or fusing unit is out check the output tray if there is a the fuser unit check the hotroller or upper roller its a black metal roller that heats up

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In Australia and I guess the same applies to you part of the world the Bro 8840 has a 2 year Return to base warranty!!! These machine are not usally problem jammers.

Sep 24, 2007 | Brother MFC-8440 All-In-One Laser Printer

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