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Banjo rebuild books/threads/resources?

Discussion in 'The Hokey Ass Message Board' started by Meyer, Jan 26, 2012.

  1. Meyer
    Joined: Sep 9, 2007
    Posts: 379

    Meyer
    Member

    All,

    I am building an AV8, along the lines of the Tardell/Bishop book.

    I have a '40 rear, it was sitting for awhile, but appears to be in pretty good shape. I have it partially disassembled... backing plates are off, etc. Drums are salvageable within spec, outer bearings are a little pitted, but the surface on the bells looks good. Planning on all new brakes and whatever else it needs. It turns freely and seems to be ok.

    I have some basic questions about how to proceed. If I replace the bearings, should I replace the races too? Should I tear into it completely, or throw some oil in and see how it goes?

    If I tear it, I would need some kind of guide. There is tdog's thread below... are there any books out there? Other threads?

    I have never setup a rear end before, but am pretty mechanically inclined and have full access to a full machine shop (partner in one :D )


    http://www.jalopyjournal.com/forum/showthread.php?t=462776
     
  2. rustynutz
    Joined: Jun 19, 2009
    Posts: 78

    rustynutz
    Member

    Tech on banjo rebuild in the tech archives
     
  3. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,681

    Bruce Lancaster
    Member Emeritus

    For the official dope...overhaul for all three generations of banjo are covered in the service bulletins about so...I'm at work and don't have copies here for real citations:
    Model A type rear is in 1928, with minor updates in 1932 since B rear is same innards.
    Late 1932-34 rear is covered in 1933, the later type in 1938. Procedures of course very similar.
    If you have good original R&P setup is usually easy and most will be right with the standard thickness pair of gaskets. Current manufacture may take some work.
    Machine shop will be useful for creative presswork since you probably don't have a full set of nifty KRW pullers...
    Pinion depth was meant to be right via close manufacture with original parts, and of course carrier preload and then lash are set by sidegaskets...again, the parts were made to go together without fuss.
    Don't tap the boltholes in banjo casting...close tolerance so they don't leak. Just a gunbrush and some solvent there.

    Pinion turning torque:
    12-16 inch pounds for '40 type. backlash 006-10, absolute max 012 1520 inch pounds foer A-B rear
     
  4. Meyer
    Joined: Sep 9, 2007
    Posts: 379

    Meyer
    Member

  5. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,681

    Bruce Lancaster
    Member Emeritus

    Yep..passenger rear covered April 15, 1938
     
  6. the-rodster
    Joined: Jul 2, 2003
    Posts: 6,945

    the-rodster
    Member

  7. telecustom
    Joined: Feb 17, 2009
    Posts: 336

    telecustom
    Member
    from Langey, BC

  8. CDM
    Joined: Oct 24, 2010
    Posts: 39

    CDM
    Member

    Just FYI, the December 2011 issue of Rod&Custom has a great tech article showing how to install 8 or 9 inch guts in a 40 banjo. Does not appear to be too difficult. Might be worth a look if you are going to rebuild anyway.
     
  9. cuznbrucie
    Joined: May 1, 2005
    Posts: 2,567

    cuznbrucie
    Member

    Here you go boys......this should be helpful right out of the Ford Manual......
    [​IMG]

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    Hope that helps.....

    CB
     
    bct and lodaddyo like this.
  10. cuznbrucie
    Joined: May 1, 2005
    Posts: 2,567

    cuznbrucie
    Member

    Meyer........send me a PM with your e-mail address and I will send you *the-rodster's* article........I used it to rebuild my banjo a few years ago and it was extremely helpful....

    CB
     
  11. 392_hemi
    Joined: Jun 16, 2004
    Posts: 1,737

    392_hemi
    Member

    To measure the pinion torque I took a six spline coupler and found a deep socket that fit snug inside then pinned it in place. I use that with a 3/8 drive in/lb torque wrench.
     
  12. Bilt
    Joined: Jun 23, 2011
    Posts: 311

    Bilt
    Member

  13. Airborne34
    Joined: Dec 4, 2007
    Posts: 638

    Airborne34
    Member
    from Texas

    Should be a sticky, and excellent post.
     

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