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Thread: Cap tube help

  1. #1
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    Cap tube help

    Don't crucify me. Have no info LOL. Replacing a pump and cap tube in the morning. True box, Tecumseh 1/2 hp 134a pump. Pump is rated for high temp, application is med temp. I think it was a BC4 cap tube I picked up. Cap tube length should match med temp, not high temp correct? There is something like 40" difference in length. Truck is in a storage lot and I forgot to bring my notebook home.
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  2. #2
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    Quote Originally Posted by 2sac View Post
    Don't crucify me. Have no info LOL. Replacing a pump and cap tube in the morning. True box, Tecumseh 1/2 hp 134a pump. Pump is rated for high temp, application is med temp. I think it was a BC4 cap tube I picked up. Cap tube length should match med temp, not high temp correct? There is something like 40" difference in length. Truck is in a storage lot and I forgot to bring my notebook home.
    Actually the compressor is rated for a high temp application (many people confuse this with an A/C only application) which is a 0 to +45 SST (industry standard by most of the compressor manufacturers).

    And yes, you are correct, use the medium temp cap tube length.

  3. #3
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    Thank you sir
    Officially, Down for the count

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  4. #4
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    In my experience, don't go by what the chart says on the box about sizing captubes. Call the manufacturer with model and serial and get the inner diameter and the length. If you can't match the inner diameter exactly, you can get close and adjust the length accordingly. Always go with manufacturer specs. If you have trouble sizing, you can call your local wholesaler and they can help you resize accordingly and get the proper total equivalent length.

    And don't forget to change the drier and flow nitrogen while brazing!

  5. #5
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    I typically consult the manufacturer but have kept this link handy i picked up from the site here
    http://boxload.tecumseh.com/SelectCapTube.aspx

  6. #6
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    I wouldn't go by the Supco chart either. Depending on model I would go by True size and convert to what size you have or if it was a habitual restrictor I'd go off the sizing program 79 posted. It rocks
    “If You Can Dodge A Wrench You Can Dodge A Ball”

  7. #7
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    Quote Originally Posted by 2sac View Post
    Don't crucify me. Have no info LOL. Replacing a pump and cap tube in the morning. True box, Tecumseh 1/2 hp 134a pump. Pump is rated for high temp, application is med temp. I think it was a BC4 cap tube I picked up. Cap tube length should match med temp, not high temp correct? There is something like 40" difference in length. Truck is in a storage lot and I forgot to bring my notebook home.
    Storage lot ?

    Live in a rough neighborhood or worse one with a hard core home owners association ?

  8. #8
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    Quote Originally Posted by commtech77 View Post
    Storage lot ?

    Live in a rough neighborhood or worse one with a hard core home owners association ?
    3rd association since I moved here 8 years ago. If the van didn't have writing I'd be ok.
    Officially, Down for the count

    YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

    I know enough to know, I don't know enough
    Liberalism-Ideas so good they mandate them

  9. #9
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    Quote Originally Posted by itsiceman View Post
    I wouldn't go by the Supco chart either. Depending on model I would go by True size and convert to what size you have or if it was a habitual restrictor I'd go off the sizing program 79 posted. It rocks
    I'll punch the #'s in the computer in the morning for the cap tube. New account(8 months old) Date code on the compressor is 2010, box may be over 10 years old. Compressor was grounded, figured I'd do the whole thing to prevent a callback.
    Officially, Down for the count

    YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

    I know enough to know, I don't know enough
    Liberalism-Ideas so good they mandate them

  10. #10
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    Quote Originally Posted by 2sac View Post
    3rd association since I moved here 8 years ago. If the van didn't have writing I'd be ok.
    Get giant magnets to cover the writing lol. take em off & roll em up when you head out

  11. #11
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    Or just buy some magnetic decals that say how much you love and appreciate your home owners association

  12. #12
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    Called True. Supco and Tecumseh charts both incorrect.

    What sucks is our construction crew has vans with no lettering. Boss won't let me have one because then everybody would want one.
    Officially, Down for the count

    YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

    I know enough to know, I don't know enough
    Liberalism-Ideas so good they mandate them

  13. #13
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    My home owners puts up with " the M1 Abrahms " I have to drive around. Probably because I donate my time to keep our pool club house AC frosty.

    Boss told me to pick up my new van one morning back in 2009. I show up at the shop to swap trucks and there is a 1 ton capacity Chevy with the big engine waiting for me.

    I looked at him and said " really "?

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