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  1. #1
    Join Date
    Mar 2007
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    3,134

    Another Chiller Teardown & Rebuild

    770 ton Trane CVHF, bearing failure and a worn oil seal

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    Removing the economizer

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    Economizer sealed up for storage to prevent rust

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    Rigging of suction elbow

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    Removing suction elbow

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    Suction elbow covered to prevent rust

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    Compressor and evaporator flanges covered to prevent rust and prevent debris from falling in

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    Preparing to remove suction cover

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    Removing suction cover

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    Rigging the suction cover down and a shot of one of the work-tables where all of the tools return when we are done with something

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    Checking the run-out of the 1st stage impeller
    The key to happiness is lower expectations.

  2. #2
    Join Date
    Mar 2007
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    Name:  11.jpg
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    This is where the inter-stage shaft seal mounts on the 1st stage diffuser

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    Looking at the motor journal bearing support with the oil seal, mounting plate, and internal oil line removed

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    Setting up the dial indicator to make sure we do not move the shaft too much when we remove the bearing and bearing support

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    Another shot of the dial indicator setup

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    The failed journal bearing

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    Dowel pins installed to make sure the bearing support goes back exactly where it was before

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    Removal of bearing support - we monitored the shaft at all times with the dial indicator as it could move no more than .003" in any direction

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    Another shot of the removed journal bearing support and the bad back oil seal

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    Inside the motor

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    Last edited by Tech Rob; 10-29-2012 at 11:23 PM.
    The key to happiness is lower expectations.

  3. #3
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,064
    Something wrong with the second post, I cant see the pictures, first post is ok.

  4. #4
    Join Date
    Mar 2007
    Posts
    3,134
    Quote Originally Posted by y7turbo View Post
    Something wrong with the second post, I cant see the pictures, first post is ok.
    Fixed. This new site format is glitchy.
    The key to happiness is lower expectations.

  5. #5
    Join Date
    Jul 2006
    Location
    Anytown USA
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    Quote Originally Posted by Tech Rob View Post
    Fixed. This new site format is glitchy.
    Works now, Thanks for sharing.

  6. #6
    Join Date
    Mar 2007
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    3,134
    Quote Originally Posted by y7turbo View Post
    Works now, Thanks for sharing.
    Thanks for checking it out and commenting!
    The key to happiness is lower expectations.

  7. #7
    Join Date
    Mar 2011
    Location
    East Coast FL
    Posts
    1,065
    Very cool. Those of us DX guys dont get to see too many of these...disassembled anyway!

    Any ideas as to the cause of bearing failure? Oil system blunder?

    Thanks for sharing and keep em comin!

  8. #8
    Join Date
    Jul 2006
    Location
    Anytown USA
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    Any idea on what the weights were on the parts you removed?

  9. #9
    Join Date
    Mar 2007
    Posts
    3,134
    Economizer 840#
    Suction elbow 700#
    1st vane assy. 400#
    Suction cover 1700#
    Inter-stage 2000#

    Also a couple of smaller items between 50# and 200#
    The key to happiness is lower expectations.

  10. #10
    Join Date
    Mar 2011
    Location
    East Coast FL
    Posts
    1,065
    Hey Rob can you describe the "air run" with the suction elbow off that you mentioned in your other tear down thread? For those of us who dont know.

    Im assuming it is not to check rotation.

  11. #11
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    4,467
    that is cool! it looks like you know what your doing

  12. #12
    Join Date
    Mar 2007
    Posts
    3,134
    Thanks! My motto is "fake it until you make it"!!!
    The key to happiness is lower expectations.

  13. #13
    Join Date
    Jul 2006
    Location
    Anytown USA
    Posts
    2,064
    Quote Originally Posted by Tech Rob View Post
    "fake it until you make it"!!!

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