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  1. #1
    Join Date
    Oct 2010
    Posts
    119

    Trane pcv sidewinder air leak

    Hi, i have a 300 ton sidewinder (pcv) that has leaking o-rings around the large volutes and the vane arms,just wondering if it can be regasketed without major teardown?

  2. #2
    Join Date
    Dec 2008
    Location
    Dixiana, AL
    Posts
    2,610
    Guess that depends on your definition of a major teardown. If you're going to regasket the machine, then it's going to be taken all the way down. That doesn't mean that you have to replace bearings - that's your call. If you only want to do a partial regasket (which wouldn't come very highly recommended), then it only comes down far enough to get to what's leaking. Replacing a tang operator gasket or O ring, or one of the line gaskets is one thing. You start getting into volute seals and it's time to do the whole thing. Or you can go back in 2 months and do it all again - plus what you didn't do the first time - on your nickel.

  3. #3
    Join Date
    Jan 2008
    Location
    windy city
    Posts
    4,430
    you can veld it all together and it won't leak
    \m/
    original member of the racoon brotherhood

  4. #4
    Join Date
    Jan 2005
    Location
    Houston TX
    Posts
    874

    That a annie tique

    dpil 172- That's one very old chiller and It cant't anyway near efficient, that's the for runner of the CVHA's which are outdated. If you go through that machine and do a complete re-gasket what have you accomplished? If it still has the original controls Trane doesn't even support it anymore. If it were me I would rebuild 1st. and 2nd. vane arm assemblies ( Be careful and don't drop the 1st. stage shaft into the housing) Then I would buff all the joints and smear Vac-seal on it, including the bolt heads. This won't help you on the high side, but will on the low side. Does this machine still have the original purge on top of the evaporator and one last detail is it R-11 or R-113.-GEO
    Once in a while everything falls into place and I am able to move forward, most of the time it just falls all over the place and I can't go anywhere-GEO

  5. #5
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    2,058
    If you go through that machine and do a complete re-gasket what have you accomplished?

    If its done right it wont be leaking .

    If it were me I would rebuild 1st. and 2nd. vane arm assemblies

    What will this acheive if its leaking at the volutes ??

    Then I would buff all the joints and smear Vac-seal on it, including the bolt heads.

    Band aid solution !!!!!!
    The 64 roars to life Whoo hoo ...shes a rolling chassis .
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    Best Austin Healey In Show twice in 2013 .....All those hrs paid off .

  6. #6
    Join Date
    Jan 2005
    Location
    Houston TX
    Posts
    874

    Band Aid solution

    graham- I'm in 100% agreement with you, this is only a band aid. A complete top to bottom re-gasket job would cost more then this chiller is worth. That's if Trane can find all the parts. If a customer is ready to spend for a complete re-gasket, they would be better off getting a new chiller. Just my humble opinion.-GEO
    Once in a while everything falls into place and I am able to move forward, most of the time it just falls all over the place and I can't go anywhere-GEO

  7. #7
    Join Date
    Mar 2004
    Location
    ottawa canada
    Posts
    2,058
    If a customer is ready to spend for a complete re-gasket, they would be better off getting a new chiller

    To a point this is correct .......but if the chiller is three levels below ground jammed in a corner surrounded by pumps and other sundry mechanical room junk so removal and replacement would mean a huge mechanical room revamp and upgrade ...then that regasketing c/w a conversion to R123, new purge, and a new control panel looks quite attractive ???
    Is the chiller efficient .....no not compared to the new ones but sometimes you got to work with what you have its not just about selling them a new one ,theres more logistics involved than just a new chiller . I've converted and upgraded so many of these old girls its not funny for the very reasons i just pointed out , very reliable chiller when you keep them tight and maintained .

    If its R113 then forget all the above ..............its junk .
    The 64 roars to life Whoo hoo ...shes a rolling chassis .
    You bend em" I"ll mend em" !!!!!!!
    I"m not a service tech.. I"m a thermodynamic transfer analyst & strategic system sustainability specialist
    Best Austin Healey In Show twice in 2013 .....All those hrs paid off .

  8. #8
    Join Date
    Oct 2010
    Posts
    119
    Thanks for the replies,i will push for them to replace machine,in meantime the purge is doing it's thing keeping it online.Happy 4th to all

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