Question about Brother IntelliFAX 4100 Laser Fax

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Rebuilding the brother fuser for the intellifax 4100

Hi, I took the plunge, disassembled the machine and found the broken brown fuser gear.Scavenged an intact gear from a spare fuser assy from an old model 1240 printer.The first few prints were perfect, but then progressively bad double/repeat faint images.Is the red roller bad?Heating element?Thermistor?The red roller in the 4100 seemed to have a bigger diameter than that in the 1240 (indication it is bad?).Should they be the same? thanks

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  • brokenfax Sep 10, 2008

    Wow, great advice! It turned out to be a defectively rebuilt drum/toner combo purchased from a local supplier!! As soon as I tried a (borrowed) original Brother drum/toner unit the prints look perfect. So the gear/fuser/heater/etc turned out okay - - well worth all the trouble of the total tear down and rebuild (plus it was actually a lot of fun doing it first time ever from the pdf download of the tech manual). Again, a BIG thank you!

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Although it fit the broken fuser, it does not mean it's ok.
1-they must have the same number of teeth ( diif. gears have diff. amounts of teeth)
2-it must be the same diameter ( so they can mesh together, otherwise it's touching the tip of hte teeth and may be skipping.

But I'm not sure the double image is coming from there, it would jam the paper because the timing is off.
Anyway you need to eliminate the obvious then see what happens, I think you said you had another tonertry putting that in, if it doesn't work then change the gear for the correct one.

try precisionroller.com

Posted on Sep 09, 2008

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