Starnge noise

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  • vincent64
    Trusted Tech

    250+ Posts
    • Feb 2008
    • 382
    #1

    Starnge noise

    I have a MX 3501 making a strange noise from the fuser area, not the unit, but the fuser drive, it has the newer motor, when run in sim. there is no noise, when turn the unit by hand, fuser or drive unit, there is no noise, but when making copies or warming up, there is a noise sounds like a playing card stuck in spokes of a bicycle.
    Now with the upper transport tray out, the one for the finisher, you can see the back side of the drive unit and the gear that drives the fuser, turning by hand I can see it popping in there, but yet when run in sim, there is no noise, no I did not run it while watching it, figured since it popped there while turning the motor by hand, this is it.
    Any one else seen this, is it the gear or something else I am missing.
    Thanks
    Tags: 350, act, area, copies, finisher, fuser, heated, lubricant, lubrication, modifications, mods, release, replicate, side, sim, starnge, stuck, unit, upper, warming up
    • OMD-227
      #2
      Running the fuser in sim doesn't run the fuser at the same speed as if the machine was actually operating. I have been tricked by this before. This often causes you to think the problem is something else.
      You would know what the usual noisy bearing issue sounds like, so if you are sure its not the bearings, I'd first have a look at the smaller side cover (the one with the manual green rotation gear on it). Its on the same side you are talking about, and its very common for the green rotation gear to have its grease plate dry out and the gear actually rubs against the inside of that cover, causing a very similar noise to what you are saying. Take the small side cover off, quickly rotate the inside white gears by hand to see if you hear the green gear rubbing against the cover. I always find that the Sharp white grease permanently takes care of that.

      Its very hard to replicate a fuser noise by rotating it by hand. You can replicate some unusual noises in sim, like a bearing problem (only when heated up), but I'm thinking this is more of a fuser unit issue than the drive unit. We have hundreds & hundreds of C-Jupiter 1's out there and have never seen a noisy fuser drive assembly yet, but noises from fuser units are a daily occurance.

      I'd be very surprised if this one is not the fuser unit. ...... but hey, you never know.

        Comment

        • wtroll
          Technician

          50+ Posts
          • May 2008
          • 85
          #3
          If you release the 2 pressure levers on your fuser unit (like for envelopes printing) and noise will decrease, you have a fuser bearing issue.

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22929
              #4
              I agree with the others. Most of the time it's the tick, tick, ticking noise.

              The fuser rollers do no use heat collars, but do have a coated portion of the roller where the bearings contact it. I'm sure there have been a bunch of modifications since the original style fusers. What we did was to coat the inside of the bearing surfaces with HP-500 high temperature grease. It worked like a charm, and lasted the whole PM cycle. I was a PITA though. It's just as much work to totally rebuild the fuser, as to grease up these bearing surfaces.

              I had to laugh when I got the tech pub showing spray lube! Can you imagine spraying lubrication anywhere near the heat lamps? Ridiculous! =^..^=
              If you'd like a serious answer to your request:
              1) demonstrate that you've read the manual
              2) demonstrate that you made some attempt to fix it.
              3) if you're going to ask about jams include the jam code.
              4) if you're going to ask about an error code include the error code.
              5) You are the person onsite. Only you can make observations.

              blackcat: Master Of The Obvious =^..^=

                Comment

                • OMD-227
                  #5
                  Originally posted by blackcat4866
                  I'm sure there have been a bunch of modifications since the original style fusers.

                  I had to laugh when I got the tech pub showing spray lube! Can you imagine spraying lubrication anywhere near the heat lamps? Ridiculous! =^..^=
                  Attached image of latest MX3500/4500 series upper Heat Roller Modifications. These work perfect, however the Barrieta lubricant spray is pretty good too if in an emergency. I agree with the Dave on getting it on the lamps, but a steady hand always wins.

                  Just dont use too much, its stinks like crazy.
                  Attached Files

                    Comment

                    • blackcat4866
                      Master Of The Obvious

                      Site Contributor
                      10,000+ Posts
                      • Jul 2007
                      • 22929
                      #6
                      Thanks wazza. =^..^=
                      If you'd like a serious answer to your request:
                      1) demonstrate that you've read the manual
                      2) demonstrate that you made some attempt to fix it.
                      3) if you're going to ask about jams include the jam code.
                      4) if you're going to ask about an error code include the error code.
                      5) You are the person onsite. Only you can make observations.

                      blackcat: Master Of The Obvious =^..^=

                        Comment

                        • vincent64
                          Trusted Tech

                          250+ Posts
                          • Feb 2008
                          • 382
                          #7
                          I too thought it was the jam release wheel on the side, had it off, lubed it, even tried a poly slider washer in there, yepp, same ones for the BC 260 toner drive gear.
                          with it all in place, seen the drive gear popping or jumping on the fuser roller gear itself.
                          Fuser rollers are pretty new, with all the mods already, they are OEM sharp rollers as well.
                          Will take a look at the bearings, I know they can go bad sooner then I would have thought posible.

                            Comment

                            • OMD-227
                              #8
                              The fuser drive gear assembly is not missing the spring is it?

                                Comment

                                • vincent64
                                  Trusted Tech

                                  250+ Posts
                                  • Feb 2008
                                  • 382
                                  #9
                                  No if only it could have been that easy, and speaking of springs, that laser shutter soloniod spring on the newer MX color boxes, had to replace one on a MX 2600 yesterday, OMFG what a pain, if you have a spring hook that will capture the spring, it may help.

                                    Comment

                                    • vincent64
                                      Trusted Tech

                                      250+ Posts
                                      • Feb 2008
                                      • 382
                                      #10
                                      Just wanted to let ya'll know, noise was not from fuser or its drive, it was from the BK DV unit, which sets right below it.

                                        Comment

                                        • OMD-227
                                          #11
                                          Nice one!

                                          If the K dev unit was starting to seize up or has a worn/damaged drive belt, you would have noticed a banding in the print quality (only on the blacks), as well as the noise.

                                            Comment

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