Thanks Thanks:  0
Results 1 to 14 of 14

Thread: Carb Airbox Repair....

  1. #1

    Join Date
    Feb 2018
    Posts
    5
    Post Thanks / Like

    Carb Airbox Repair....

    Hi All,

    I'm slowly picking away at some issues discovered with my newly acquired J-3 Cub. I decided to pull the carb. and send it to Uni-Tech for rebuild as it seemed to be leaking fuel on the hangar floor not related to the primer. Anyway, after removing the airbox, I found that the shaft is very sloppy due to wear. I see that Wag Aero has a rebuild kit that adds riveted end plates holding bearing and a new shaft. What I don't get is that the butterfly in my existing box is brazed to the shaft and cannot be (easily) removed. How are you supposed to attach a butterfly to the shaft included in the rebuild kit? Any other ideas for fixing my current airbox?

    Thanks!

    John M.

  2. #2
    55-PA18A's Avatar
    Join Date
    Dec 2003
    Location
    Dillingham, Alaska
    Posts
    598
    Post Thanks / Like
    Not familiar with a J-3 air box and how it might be different from an 18's air box, but isn't the butterfly just a piece of metal? Make a new one. Or, send to Atlee Dodge in Anchorage. They used to rebuild air boxes. Maybe they still do.

    Jim
    Likes mike mcs repair liked this post

  3. #3

    Join Date
    Jan 2003
    Location
    nd
    Posts
    3,292
    Post Thanks / Like
    show us a picture.

  4. #4
    SchulerJL's Avatar
    Join Date
    Aug 2009
    Location
    Peoria, Illinois
    Posts
    579
    Post Thanks / Like
    Give Randy a call, outstanding work on Carb Air boxes

    RANDY RUBBERT AIRCRAFT MAINTENANCE AND REPAIRReynolds, North Dakota


    (701) 847-3008
    1850 2nd Ave NeReynolds, ND 58275-9477


  5. #5
    mvivion's Avatar
    Join Date
    Jun 2003
    Location
    Bozeman,MT
    Posts
    10,517
    Post Thanks / Like
    Quote Originally Posted by SchulerJL View Post
    Give Randy a call, outstanding work on Carb Air boxes

    RANDY RUBBERT AIRCRAFT MAINTENANCE AND REPAIRReynolds, North Dakota


    (701) 847-3008
    1850 2nd Ave NeReynolds, ND 58275-9477

    Randy does fantastic repairs on air boxes. Would be my first, second and third choice.

    MTV
    Likes 12Geezer2 liked this post

  6. #6
    hotrod180's Avatar
    Join Date
    May 2008
    Location
    Port Townsend, WA
    Posts
    2,688
    Post Thanks / Like
    A buddy of mine sent his C180 airbox to FA Dodge years ago,
    came back looking *better than new*.
    But $$$$$$$$$.
    Cessna Skywagon-- accept no substitute!

  7. #7
    aktango58's Avatar
    Join Date
    Aug 2004
    Location
    18AA
    Posts
    9,101
    Post Thanks / Like
    Air box and tailwheel...

    What does Bill Duncan say about tailwheels: they get ignored until they are gone.

    The importance of it, and the limited care they get for an often flimsy pice of metal, not hard to have them come back 'better than new'.
    I don't know where you've been me lad, but I see you won first Prize!

  8. #8
    Marty57's Avatar
    Join Date
    Jan 2005
    Location
    Nipomo, Ca
    Posts
    1,381
    Post Thanks / Like
    Give Lycon in Visalia Ca a call and see if they have what you need. When they showed me around last year, they had a pallet box full of air boxes they received when they bought out Greek AF inventory. They told be they would sell the air boxes if some one needed the parts and to give them a call.
    Marty
    N367PS
    Psalm 36:7 "High and low among men find refuge in the shadow of His wing"
    www.marty2plus2.com

  9. #9
    hotrod180's Avatar
    Join Date
    May 2008
    Location
    Port Townsend, WA
    Posts
    2,688
    Post Thanks / Like
    I think Wag or Spruce or Univair sells complete airbox assemblies.
    Dunno if PMA'd or not.
    I kinda recall they were similar if not identical to my old C170 airbox.
    Cessna Skywagon-- accept no substitute!

  10. #10
    algonquin's Avatar
    Join Date
    Apr 2013
    Location
    Seldovia,Ak
    Posts
    898
    Post Thanks / Like
    If the box for the C-180 was for a 53 or 54 they are very special and have a SS plate. I understand only one company makes the part and a new airbox is around $10,000.00 or so I've been told. This is second hand infro. So take it for what it is.
    Likes 180Marty liked this post

  11. #11
    WhiskeyMike's Avatar
    Join Date
    Jun 2003
    Location
    West Boxford MA
    Posts
    885
    Post Thanks / Like
    There are very specific requirements about the rivets and placement in air boxes. If it falls apart, the engine can easily quit. Use a good, reputable rebuilder.

  12. #12

    Join Date
    Aug 2017
    Posts
    4
    Post Thanks / Like
    Agreed.

  13. #13
    RaisedByWolves's Avatar
    Join Date
    Feb 2005
    Posts
    3,827
    Post Thanks / Like


    Broke right where the reinforcing plate stoped. Got an almost new one the next day from the Hampton fly mart. Perfect timing


    Sent from my iPhone using Tapatalk

  14. #14
    flyrite's Avatar
    Join Date
    Mar 2013
    Location
    Lyons,GA
    Posts
    464
    Post Thanks / Like
    Quote Originally Posted by ezflyr View Post
    Hi All,

    I'm slowly picking away at some issues discovered with my newly acquired J-3 Cub. I decided to pull the carb. and send it to Uni-Tech for rebuild as it seemed to be leaking fuel on the hangar floor not related to the primer. Anyway, after removing the airbox, I found that the shaft is very sloppy due to wear. I see that Wag Aero has a rebuild kit that adds riveted end plates holding bearing and a new shaft. What I don't get is that the butterfly in my existing box is brazed to the shaft and cannot be (easily) removed. How are you supposed to attach a butterfly to the shaft included in the rebuild kit? Any other ideas for fixing my current airbox?

    Thanks!

    John M.

    John, just did the rebuild with the kit that you referenced. Not a hard job at all ,you will need to grind the brazing from the butterfly that attaches it to the bolt . As well as grind off the ends on the outside of the box that the bolt goes through , you won't need those anymore.

Similar Threads

  1. Repair Kit Lycoming carb heat/air box
    By scubber in forum Super Cub Sick Bay
    Replies: 7
    Last Post: 11-21-2012, 12:05 AM
  2. carb heat airbox, where to buy
    By M1 in forum Super Cub Sick Bay
    Replies: 8
    Last Post: 04-14-2008, 09:40 PM
  3. Carb heat box repair
    By sekps in forum Cafe Supercub
    Replies: 0
    Last Post: 12-30-2003, 04:23 AM

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •