4000 4100 Fuser Rebuild

	4100 Fuser Sheeve Rebuild Instructions
	Models: 4100 \| 4100n \| 4100tn \| 4100dtn \| 4101mfp NOTE: These instructions are simply a guide. First Choice assumes no responsibility or liability for any damages caused by user while working on there printer during this repair.

Tools Required

� Small flat blade screwdriver
� Phillips screwdriver
� Latex glove
� lint free water dampened cloth

Step 1

Begin by letting the fuser assembly cool if just removed from the printer, try to work on a protected surface that won’t get harmed by scratch and or grease. Work in a well lit environment.

NOTE: This procedure is only for fusers that produce poor copy quality. Fusers that are in service error 50.X must be replaced. A fuser sleeve will not cure this problem.

Step 2

Remove the top two screws which hold the cover plate down. Screws are indicated in picture.

Step 3

Use your flat blade and release the two inner release clips there will be one on the left side and one on the right side. This will cause the top cover to spring open when complete. You can keep the cover on for the time being if you choose. There are a couple of connectors that will need to be unplugged.

Step 4

While facing the gear side of the fuser, remove the three screws which hold the bracket in place.

Step 5

Here is a view with the cover plate removed and now you can identify and remove the 2 brown gears.

Step 6

With the gears removed you have exposed the wiring harness. Now unplug the single connector.

Step 7

Perform the same procedure on the opposite side; there are two connectors, both will need to be unplugged.

Step 8

At this time you can remove the metal cover plate. Note the cover plate will not completely be removed. The red grounding wire will still be connected. This is ok. Just lay the cover in front of the fuser as you are working. The fuser element can be removed by simply lifting upward. Be sure to be very careful with the fuser element and set it in a safe place.

Step 9

Example of the fuser element removed.

Step 10

Begin by working with the end that has only one wire harness. Remove plug as shown in the picture.

Step 11

Next remove the locking clip at the end of the collar as shown in picture.

Step 12

Remove the collar by simply sliding it off the element shaft.

Step 13

Slide off the old fuser sleeve.

Step 14

WARNING: We are showing a bad element as a visual, fuser elements are extremely fragile and can crack very easy, be sure to be very gentle and cautious when working with this area of the fuser.

Fuser elements are made of porcelain and/or ceramic. They crack easy. If your fuser looks like this when you removed your sleeve, then you must purchase a replacement fuser.

Step 15

You may clean your fuser element if it has heavy toner contamination such as this one. Use a rag and dampen it with a little water. You can also use a credit card or something similar to etch away the toner build up and then use the dampened rag.

Step 16

This picture illustrates a clean element.

Step 17

You may also at this time lightly rub the lower pressure roller to clean it use a dampened rag. The lower pressure roller is made up of a soft rubber core with a non stick coating, which functions as a cleaning roller. The lower pressure roller picks up debris and deposits it on the back of your paper; the deposits are typically so small that it is not noticeable.

Step 18

At this time prepare your fuser element for lubrication. Use our fuser care kit or polytetrafluoroethylene. This lubrication is what the OEM's use when the fuser is manufactured new. It will ensure your new sleeve survives its life cycle. Without using the correct lubrication, the fuser sleeve is at risk of seizing against the fuser element.

Step 19

Using a glove or a swab saturate the fuser element completely from side to side as seen in the picture. Try to work in and around the element. Don’t worry about getting a little messy.

Step 20

WARNING: Before sliding the new sleeve on please read. The new fuser sleeve should not be touched in the center try to handle it around the edges. The new fuser sleeve is directional and must be installed with the large black ring toward the side where there is multiple wiring harnesses as shown in the picture. The large black ring is a grounding path.

Slide the new sleeve on the fuser element all the way until it stops. Then repeat steps 12, 11, 10. Finally, reinstall the fuser element by lowering it into place.

Step 21

This photo shows the grounding brush and the black ring on the fuser sleeve.

Step 22

Begin to reinstall the two connectors on the non geared side and be sure to tuck the wiring harnesses in correctly. Be sure to make a good connection on both of these plugs. Many times we have had the rear plug not completely make contact. This is a good way to get a fuser error when powering the printer up for the first time.

Step 23

Begin to connect the single plug and be sure to tuck it correctly back into it's location. When finished reinstall the two brown fuser drive gears. They can only go on one way so there is no worry here.

Step 24

Reinstall the fuser drive gear cover plate. There should be three screws for this.

Step 25

Look at picture 24 and notice how the springs, one on each side of the top cover, have a plastic nipple which will match up. Make sure to guide the springs on top of these nipples. Then use the two remaining screws.