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Thread: Delaval 73 spun shaft

  1. #11
    Join Date
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    I only weld one side so that in the future it will be easier to remove the shaft for a new one.

  2. #12
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    Mar 2011
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    North Grenville, Ontario
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    It's in the welders hands now. Dropped it off this morning. So fingers crossed he will be able to make it like new. I was able to line up the oil holes and put some screw drivers right through holes to hold it. They were exact size as holes so it worked out great. He's going to TIG weld it. He said he would be more comfortable doing it TIG to control heat. I didn't argue. So I'll have it back together tonight and running so I'll post how it turned out.
    By adding the welds will it throw the balance of the drum off a bit? Hopefully not. But thought I'd ask.
    Last edited by Bricklayer; 04-01-2018 at 11:25 AM.
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  3. #13
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    Tig welding will add little to no weight and being in the center of that big drum I highly doubt you'll notice it. I have access to a full machine shop so when I spun the shaft out of my 74 I made a new shaft with a flange on one side i taper pinned to the drum. The tig weld should be a fine fix. Jeff
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  4. #14
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    Mar 2011
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    Just put pump back together with welded shaft. He welded it on both sides and checked it for balance.
    He told me if it spins loose again they can knurl the shaft and re press it in drum.
    I i wouldn't even know how you'd line up those super small oil rail holes while pressing it in.
    But at least it's an option.
    Pump is running now so all seems good.
    Fingers crossed.
    600 taps on vacuum
    Lapierre mechanical Releaser
    CDL electric releaser
    2.5 x 10 CDL Venturi ( new for the 2024 season )
    Home made modulating auto draw off
    Homemade RO 2 x 4" membranes
    CDL 16 x 16 bottler
    Wesfab 7" filter press
    Delaval 73 vacuum pumps

    12 hives of bees

  5. #15
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    If repressing, just redrill the shaft where it is aligned at. The old hole will be plugged off by the drum.

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