[Karl G. Mueller]

Dave,

The shielded type bearing will have a "ZZ" after its number and among some other
letters while the sealed type will have a  "LLU" or "LLB" designation.

Karl G. Mueller
kgamueller at rogers.com

  ----- Original Message ----- 
  From: David Wartel 
  To: discussion at nsrca.org 
  Sent: Sunday, June 19, 2005 11:57 AM
  Subject: Re: 


  Thanks, Karl. 

  How do you tell if they're sealed or shielded?
    ----- Original Message ----- 
    From: Karl G. Mueller 
    To: discussion at nsrca.org 
    Sent: Sunday, June 19, 2005 10:23 AM
    Subject: Re: 


    Dave,

    If these are "sealed" bearings you can leave the seals on. These are lubricated
    for life. If they are only "shielded" you can pop out the shields facing the rear,
    when mounted in the engine, on both bearings. 

    Karl G. Mueller
    kgamueller at rogers.com


      ----- Original Message ----- 
      From: David Wartel 
      To: discussion at nsrca.org 
      Sent: Saturday, June 18, 2005 9:56 PM
      Subject: Re: 


      Yup! I leveraged the gear puller with a wrench, heated the hub slightly with a torch and tapped the end with a mallet and it popped off.

      Thanks! It's in the oven!

      Now, do I leave the seals in the new bearing or not?

        ----- Original Message ----- 
        From: Karl G. Mueller 
        To: discussion at nsrca.org 
        Sent: Saturday, June 18, 2005 9:57 PM
        Subject: Re: 


        Dave,

        Try a little heat with a torch while you have the tension from the puller
        on the drive washer. The aluminum drive washer will expand more with a 
        little heat then the steel shaft will. If that doesn't work, use the hammer 
        and the heat.  :-)

        Karl G. Mueller
        kgamueller at rogers.com

          ----- Original Message ----- 
          From: David Wartel 
          To: discussion at nsrca.org 
          Sent: Saturday, June 18, 2005 9:32 PM
          Subject: Re: 


          I hope you're joking! I just emailed a friend about this and he said, "take your time and think things through before you resort to a hammer." (!)

          Also: I'm using the Boca sealed SS bearing. What was the concensus regarding leaving/removing the seal(s)?

          Dave
            ----- Original Message ----- 
            From: george kennie 
            To: discussion at nsrca.org 
            Sent: Saturday, June 18, 2005 9:17 PM
            Subject: Re: 


            When it's good and tight, hit the end of the puller screw a good belt with a hammer! The abrupt shock will bust it free. 
            David Wartel wrote: 

              I'm replacing the bearing in a Webra 1.45. All of the "difficult" disassembly is done: the circlip, wrist pin etc., but I'm having trouble removing the prop drive hub. I'm assuming this is a press fit and am using a gear puller, but even tightening the tool as much as I can, the hub stays put. Is there a trick to removing it? Thanks, Dave
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