When they break....

Discussion in 'Maintenance Bay' started by simtech, Feb 24, 2017.

  1. simtech

    simtech Pattern Altitude

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    They break good! First time replacing a vacuum pump and I was very surprised to see the spline and everything else in there being plastic. I guess thats good so it can shear and not break stuff in the case but still I was surprise.

    Think it's still usable? I'll tell you what the nut on the bottom left by the tach cable is absolutely a pain in the butt as is changing the filters behind the panel!

    But I have vacuum so all is good.


    20170224_172420.jpg
     
  2. unsafervguy

    unsafervguy Line Up and Wait

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    The shaft is designed to shear like it did when the pump fails to protect the gears in the accessory case. The new pump will have a new coupler installed.
    Bob
     
  3. BigBadLou

    BigBadLou En-Route

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    A little hot glue and duct tape and you're back in business. :D

    I like your billfold!
     
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  4. Let'sgoflying!

    Let'sgoflying! Touchdown! Greaser! PoA Supporter

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    How many hours on that one, @simtech ?
     
    Last edited: Feb 27, 2017
  5. Skip Miller

    Skip Miller En-Route PoA Supporter

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    The billfold?
     
  6. simtech

    simtech Pattern Altitude

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    Gate clicker doubles as a billfold since once inside the gate it cost money!

    200 hrs on the broke one! I don't understand that but whatever now all lines are clean, new filters, and a new tempest pump.
     
  7. Dan Thomas

    Dan Thomas En-Route

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    What happened to the pump previous to the one that just broke? If a pump wears out and self-destructs, there's enough volume of vacuum in the instruments to cause a brief suction back into them, sucking broken bits of pump vanes and rotor back up the lines. The next pump gets to eat that stuff, and it usually fails it early.
     
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  8. simtech

    simtech Pattern Altitude

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    I don't know, didn't own the plane then. I cleaned out the lines and even last annual replaced my AI and doing DG this annual. Thankfully they have screens on them.
     
  9. mscard88

    mscard88 Touchdown! Greaser!

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    A prop no doubt trying to impress. Probably swiped it off of DG. :D
     
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  10. simtech

    simtech Pattern Altitude

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    did it work?
     
  11. mscard88

    mscard88 Touchdown! Greaser!

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    No cause I know DG has no moola. :rofl::rofl::rofl:
     
  12. simtech

    simtech Pattern Altitude

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    hahahahaha well he did get re married...
     
  13. mscard88

    mscard88 Touchdown! Greaser!

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    Really! Didn't know he was divorced.
     
  14. mulligan

    mulligan Cleared for Takeoff

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    That will buff right out
     
  15. Chip Sylverne

    Chip Sylverne En-Route

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    Fear is the poison of our lives.
    Here's a little secret for getting that bottom left fastener. First, there' a special tool you can buy, or make if you're so inclined that has a 90 degree bend in the shank to get around the pump. Second, take a little super glue and glue the washer to the nut and get 'em on the stud both at the same time. The washer helps to hold the nut on the threads until you can get it started. And of course, you gotta hold your tongue just right.

    Turns it into a 20 minute job.
     
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  16. simtech

    simtech Pattern Altitude

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    yeah ill have to make a special tool like that and the super glue trick would have been premium! As it was it turned into an hour job, and lots of swearing! Funny thing was when I removed it that bottom left nut was already backed off to where the pump was holding the nut in place!
     
  17. denverpilot

    denverpilot Taxi to Parking

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    Must be vacuum pump death season. @TangoWhiskey just tossed one, too.
     
  18. Tom-D

    Tom-D Taxi to Parking

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    those are not rebuildable.
     
  19. mscard88

    mscard88 Touchdown! Greaser!

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    Maybe they happen in 3s, like that old saying about plane crashes. So two down, who's up?
     
  20. simtech

    simtech Pattern Altitude

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    Yep a few years back got divorced and remarried pretty quickly afterwords.
     
  21. mscard88

    mscard88 Touchdown! Greaser!

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    Was he still married to the English woman when he divorced?
     
  22. simtech

    simtech Pattern Altitude

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    I'm wondering if an AoA would have prevented it?
     
  23. simtech

    simtech Pattern Altitude

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    Yep he was.
     
  24. mscard88

    mscard88 Touchdown! Greaser!

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    Even back in the late 70s when I was there they were having difficulties. Figured it would've happened many years ago.
     
  25. simtech

    simtech Pattern Altitude

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    It was actually kind of a shock to us. Now he has him a young gal with more kids.
     
  26. mscard88

    mscard88 Touchdown! Greaser!

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    Old Dave! You go boy!
     
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  27. zodiacflyguy

    zodiacflyguy Pre-Flight

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    Last mechanic probably thought "the HELL with this"

    Sent from my LG-LS997 using Tapatalk
     
  28. Timbeck2

    Timbeck2 En-Route

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    I was the first back in January so that's three. All is well with the world again. I had the tool but I didn't know about the super glue trick. I reverted back to my jet engine mechanic days and used beeswax.
     
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  29. Clark1961

    Clark1961 Touchdown! Greaser!

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    Losing vacuum sucks.


    Go back with an airwolf...
     
  30. JohnAJohnson

    JohnAJohnson Line Up and Wait

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    Don't know if these things work, but I installed a CV1J4 “Clear View” Inline Vacuum Filter just for the purpose you describe.

    [​IMG]