MP 161 with chewed up main motor

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  • Herostrat
    Trusted Tech

    100+ Posts
    • Oct 2012
    • 220
    #1

    MP 161 with chewed up main motor

    This doesn't make any sence at all to be honest,we have loads of these little buggers on maintenance,1013,1515,MP161,yet so far in about 5 years only recently we got calls for 3 of MP161 that had chewed up main motor axis,and theese 3 were working for about 5 months.
    Now counters are around 80k,if that happened on MP series why didn't it happen on any of older ones...we have some of those on 300k counters working just fine for about 5 years now,how did plastic (or bakelite...hell if I know) gears in drive assembly,managed to peal off metal (or some aloy...hell if I know) from the main motor axis?
    PCU and Fuser aren't giving some extra load on drive,I'we seen one machine with developer spilled in the back,below the drive assembly,can't realy tell if it's because of developer,I found it below the drive not in it,doesn't make sence for plastic to chew up metal?
    I'm wondering if anyone had this problem,and if there is some tech buliten anouncing correction in part numbers,meybe ricoh used some diferent aloy to make those motors in recent years?
    Gears,springs,clutches,sliders,connectors and electronics...who on earth can tell what's wrong with it?
    Tags: None
    • blackcat4866
      Master Of The Obvious

      Site Contributor
      10,000+ Posts
      • Jul 2007
      • 22864
      #2
      Re: MP 161 with chewed up main motor

      You might check if there is a special lubricant required.

      On the CS-8030 the Kyocera (in addition to totally redesigning the fuser drive unit), introduced a new lubricant which seemed to help.
      =^..^=
      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

        • JustManuals
          Field Supervisor

          5,000+ Posts
          • Jan 2006
          • 9919
          #3
          Re: MP 161 with chewed up main motor

          This Parts & Service Manual can now be purchased for $12.77 and downloaded immediately after payment from:


          http://www.justmanuals.com



          Paul@justmanuals.com

            Comment

            • slimslob
              Retired

              Site Contributor
              25,000+ Posts
              • May 2013
              • 36239
              #4
              Re: MP 161 with chewed up main motor

              I have had problems with this model in light usage locations. At about 30-35K on the PCU, the developer all piles up at the back end of the development unit causing stripped development gears and main motor overload SC500. Only solution is to replace the PCU.

                Comment

                • ccfc87
                  Technician
                  • Feb 2014
                  • 18
                  #5
                  Re: MP 161 with chewed up main motor

                  I have had a few of these motors fail in the past. Like yourself no reasonable explanantion why! I fitted a new one with a blob of thew white high temperature grease on it.

                    Comment

                    • Polarbear
                      Service Manager

                      1,000+ Posts
                      • Feb 2012
                      • 1070
                      #6
                      Re: MP 161 with chewed up main motor

                      Originally posted by ccfc87
                      I have had a few of these motors fail in the past. Like yourself no reasonable explanantion why! I fitted a new one with a blob of thew white high temperature grease on it.
                      That grease idea makes sense, as Ricoh says in their EM lists to do that on each EM visit. Few techs bother to do that though, so the gears run without lubrication.

                      This does not explain chewed up gears though. I can only agree with previous posts regarding premature failure on the pcu gears that cause this (and the "new" 301 is no exception!)

                      Dev does get into the drive (even small amounts) work like a abrasive of note! Especially on soft metal like the shafts of electric motors!
                      Press the GREEN button!!

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