Class 380 Decoupling failure

Discussion in 'Traction & Rolling Stock' started by mbreckers, 29 Aug 2015.

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  1. mbreckers

    mbreckers Member

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    Spotted a ScotRail driver attempting to decouple 380009 and 380012 at Glasgow Central on Thursday.

    Something had clearly failed during the decoupling, and resorted to using the old if it wont move kick it routine.

    Cue engineer (are they called engineers?) who managed to decouple it after a few minutes after a lot of clunks.

    [​IMG]
     
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  3. Jonfun

    Jonfun Established Member

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    Basic railway fault rectification: (any relation to activities of real life fitters or depots is purely coincidental... :) )

    If in doubt, give it a clout. If still unsure, hit it some more.

    If it should move but doesn't, WD40. If it shouldn't move but does, gaffer tape.
     
  4. SpacePhoenix

    SpacePhoenix Established Member

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    Do the corridor connections have a pneumatic rod at the top to extend and retract them?
     
  5. Carntyne

    Carntyne Member

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    It's a kind of folding mechanism they have at the top which pushes it out.
     
  6. notadriver

    notadriver Established Member

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    Surely it can still run if that mechanism fails ?
     
  7. swt_passenger

    swt_passenger Veteran Member

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    Not if (as I believe) it is required to be retracted when moving for forward visibility. Although a slow speed run to the nearest depot might be a different matter.
    If it was OK to run with the gangway vertical I doubt they'd have fitted the additional bellows section (the one nearer the cab - there's a flange (or frame) between the two sections).

    As an aside, the spring mechanism that's visible on the top of the front section of gangway seems to be basically the same as that on a normal 350/450/444 - so I think the means of hinging the second section must be hidden from view.
     
  8. 380101

    380101 Member

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    There is an internal gangway retract valve if it fails to retract using the switch. Similarly there an internal deploy valve if it fails to deploy using the switch. Happens from time to time but not big issues really. Can run with the gangway deployed at up to 50mph if leading cab and 100mph if trailing.

    It will not allow the uncouple procedure to start unless the gangways are retracted for some reason, unless they are isolated I think. Never had to go down that road though...yet!
     
    Last edited: 31 Aug 2015
  9. mbreckers

    mbreckers Member

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    Off topic, but are you a 380 driver?
     
  10. 380101

    380101 Member

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    Yes...
     
  11. SpacePhoenix

    SpacePhoenix Established Member

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    @380101; is there a pneumatic arm inside there that extends/retracts the corridor connection?
     
  12. 380101

    380101 Member

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    Absolutely no idea...there is a foldable roof panel inside the gangway which may conceal the mechanism. There is no access to the gangway when retracted as the missile doors don't open far enough due to hitting the drop down roof panel. Only way to see in is if someone hasn't closed up the yellow fly doors on the outside.
     
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