REVOX A77 - Replace capstan bearing

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Комментарии • 35

  • @WestCoastDP
    @WestCoastDP 2 месяца назад

    Good job. That locking slide pin is hard to get on. I found out that using thin nose pliers works great. Just pull the lever up and over the shaft with the pliers. Easy, peasy.

    • @dchatz
      @dchatz  2 месяца назад

      Thank you

  • @ScottGrammer
    @ScottGrammer 7 месяцев назад +1

    Your English is just fine. Thanks for the video, I am rebuilding a B77 of my own, and may well need to replace these same bearings. Subscribed.

    • @dchatz
      @dchatz  7 месяцев назад +1

      Thank you

  • @lichtbild2740
    @lichtbild2740 6 месяцев назад +1

    Thank you for sharing this ! I have to change my bearings as well … much appreciated

    • @dchatz
      @dchatz  6 месяцев назад

      Welcome !!

  • @berlewi
    @berlewi 7 месяцев назад +1

    Many thanks for making such a helpful and excellent video!! 🙏

  • @garyspencer1711
    @garyspencer1711 Год назад +1

    Nice Job Chatzman ! Excellent video and audio. We thank you for your hard work. Be Well.

    • @dchatz
      @dchatz  Год назад

      Thank you Gary

  • @haroon1957
    @haroon1957 Год назад

    Great video. Motivates me to check my a77 mklll while I am in the recap phase!

    • @dchatz
      @dchatz  Год назад

      Thank you. I am very happy to help and motivate others

  • @pmscompany
    @pmscompany Год назад +1

    Your English is like of mine. Lol But my native is Spanish. But the more important is the context of video. Thanks for upload !!!

    • @dchatz
      @dchatz  Год назад

      as long as all is understood its OK. Did you know that I have heard a lot that listening to greek or spanish others confuse the two? They say they sound the same to an outsider. Its because the accent is randomly put on a word. French is usually on the last, Italian on the before the last but greek and spanish is random. That is why.

  • @ppeterso22
    @ppeterso22 2 года назад +2

    Thank you! -getting ready to do this on my A77mkIII as the motor has a slight scraping sound in the bearing.

    • @dchatz
      @dchatz  2 года назад +1

      There is always the possibility that the motor has been out of specs after all these years and the tight tolerances are out of limits. If its so your motor might keep on making noises which are not from the bearing but from the shaft being able to move slightly front-back while turning. In that case the motor might need replacing. There are many for sale on ebay. Replacing the bearing is always a cheap and simple job that is worth trying. Don't forget to put thin oil on the front sintered bearing. Put a lot there. It might be totally dry.

    • @ppeterso22
      @ppeterso22 2 года назад

      @@dchatz thanks! Let’s hope it all works out. Both bearings have been oils so the front felt is damp with oil

    • @ppeterso22
      @ppeterso22 2 года назад

      @@dchatz thanks to your video, replacing the bearing wasn’t bad at all. As you said may happen the motor is noisy unless I tilt the unit back or forward. Should I replace the motor or just the shaft? Thanks

    • @dchatz
      @dchatz  2 года назад

      @@ppeterso22 i wish i new. I also don't have experience on things going wrong. Im not a technician, just a hobbyist. There is another video in my channel where i remove the whole motor if you need help how to do it but I don't know exactly where the problem might be. Mine is still noisy but I'll leave it like that for now. ruclips.net/video/KePLwQTn8Hg/видео.html

  • @michaelbentley4182
    @michaelbentley4182 5 месяцев назад +1

    Excellent!

    • @dchatz
      @dchatz  5 месяцев назад

      Thank you

  • @brotherspock8180
    @brotherspock8180 Год назад

    Great video.

  • @spitsini
    @spitsini Год назад +1

    Great job ! Και το δικό μου θέλει!

    • @dchatz
      @dchatz  Год назад

      Now you can do it yourself !!!

  • @fickfehler3866
    @fickfehler3866 Год назад

    What do you think about putting bearing on right tape guide ?

    • @dchatz
      @dchatz  Год назад

      Experts say not to put. You may put, if it sounds right leave it. Measure flutter with wget for pc and if you are ok with result leave it on

  • @stevegeorge6131
    @stevegeorge6131 2 года назад +1

    What do you use to bypass the AC two pin interlock ( when the unit is running outside of the case)

    • @dchatz
      @dchatz  2 года назад

      I use a simply 2-pole power plug. Either power plug or splitter can be used. Be careful not to connect electrically the 2 poles.

    • @stevegeorge6131
      @stevegeorge6131 2 года назад

      @@dchatz ...like a Eurostyle power plug?...I'm across the pond in New England

    • @stevegeorge6131
      @stevegeorge6131 2 года назад

      @@dchatz , thanks for your help too. I'm doing the Capacitor upgrade, belt install and end-of-tape resistor fix

    • @dchatz
      @dchatz  2 года назад

      @@stevegeorge6131 use any plug that fits. Any cylinder thing will do if it fits the diameter of the hole. Again DO NOT connect the 2 holes electrically. And if you use a metal cylinder dont touch it. It is connected to your house power.

    • @stevegeorge6131
      @stevegeorge6131 2 года назад

      @@dchatz Thanks. I opted to drill out the jumper rivets and install that bar back into the unit. I'm waiting on VU lamps now. End of tape lamps are in and new pinch rollers are in. I've also modded the first A77 with the resistor fix for R118

  • @nagra-ivs5558
    @nagra-ivs5558 Год назад

    What type of oil do you use ?

    • @dchatz
      @dchatz  Год назад +1

      At first I used thin gear oil but after some time I saw a bit green residue which is a sign of corrosion on the copper sintered bearing (BAD-BAD-BAD). I asked others and was instructed to use the "Mobil DTE Oil Heavy ISO VG 100 Bearing Oil SAE 30". As they say that oil is also proposed by the service manual. So use this. Search it as in the quotes on ebay.

  • @totallysmooth1203
    @totallysmooth1203 Месяц назад

    What about the front bearing?

    • @dchatz
      @dchatz  Месяц назад

      Front bearing is sintered. Just oiling with mobil dte heavy vg100