Chair Rotation

Discussion in 'Tech/Mech General' started by terryallan, Apr 2, 2011.

  1. terryallan

    terryallan Read Only Funster

    Joined:
    Jan 8, 2011
    Messages:
    13
    Likes Received:
    0
    Location:
    Scotland
    My passenger side chair doesn't rotate and I need to release the central nut which holds the swivel plate from rotating. The large round nut has four notches which obviously needs a specialist spanner/tool to fit over it and so turn the nut. I suspect many people will just whack into one of the notches with a chisel and hammer to release the nut - but that will damage the notch. Anyone know if a tool exists and where I can find one to buy?

    Thanks
     
  2. scotjimland

    scotjimland Funster Life Member

    Joined:
    Jul 25, 2007
    Messages:
    28,934
    Likes Received:
    25,574
    Location:
    .
    This supplier has two makes but makes no mention of a special spanner.. but there are at least two makes, maybe more. http://www.marcleleisure.co.uk/store/seatfitting.php

    If you know the make try Googling for the manufacturer or retailer who may have or know where to find the spanner required..


    PS.. I see we have the same surname.. where about in Scotland are you from .. we could be related .. :Laughing:

    and welcome to the forum
     
  3. wivvy's dad

    wivvy's dad Read Only Funster

    Joined:
    Jun 22, 2010
    Messages:
    3,218
    Likes Received:
    1,807
    Location:
    48.066895,12.862673
    Are you sure it should rotate?
    Where is the rotatiion release handle?
    What's the vehicle?

    We need more info.......
     
  4. terryallan

    terryallan Read Only Funster

    Joined:
    Jan 8, 2011
    Messages:
    13
    Likes Received:
    0
    Location:
    Scotland
    Thanks for replies.

    The van is a Pilote CityVan CV60H (2008). It is Fiat Ducato based. The handle is on the left hand side of the passenger seat - right hand side of the driver's seat. The seat should rotate. I can see what needs to be done but I don't want to damage the retaining round 'nut'.

    The shape of the nut is as below. It is of course threaded in the middle.

    [​IMG]
     
  5. wivvy's dad

    wivvy's dad Read Only Funster

    Joined:
    Jun 22, 2010
    Messages:
    3,218
    Likes Received:
    1,807
    Location:
    48.066895,12.862673
    Motorcycle rear shock absorber preload adjusting collar has similar profile.
    Now we need the diameter of the nut as per diagram, or is that to scale.
     
  6. scotjimland

    scotjimland Funster Life Member

    Joined:
    Jul 25, 2007
    Messages:
    28,934
    Likes Received:
    25,574
    Location:
    .
    C Nut spanner

    The spanner you need is called a C Nut spanner.. come in many sizes but now you know what to ask for .. and what it looks like ..


    [​IMG]
     
  7. terryallan

    terryallan Read Only Funster

    Joined:
    Jan 8, 2011
    Messages:
    13
    Likes Received:
    0
    Location:
    Scotland
    C Nut Spanner

    Thanks for that information. I remember I used to have one like that for my bicycle many years ago when I had a bike.
     
  8. terryallan

    terryallan Read Only Funster

    Joined:
    Jan 8, 2011
    Messages:
    13
    Likes Received:
    0
    Location:
    Scotland
    More information.

    It is a FASP seat mechanism.

    The outside diameter of the round nut is approximately 65mm or 2.5 inches.

    Pictures below may provide further detail. The nut is recessed as shown and so a C spanner may not work - depending on the size of the spanner. It is a spanner more like that used for the nut under the waste on a sink that I assumed I would need.

    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]

    Thanks again
     
  9. terryallan

    terryallan Read Only Funster

    Joined:
    Jan 8, 2011
    Messages:
    13
    Likes Received:
    0
    Location:
    Scotland
    Sink spanner

    I found my sink spanner and bicycle C spanner. Of course neither are any good for this job but I took pictures of them anyway.

    [​IMG]
     
  10. steles

    steles Read Only Funster

    Joined:
    Sep 2, 2007
    Messages:
    240
    Likes Received:
    61
    Location:
    Kent
    It looks from the pics that somone has already attacked it with a chisel. Best if all else fails to use a drift with blunt end, will do far less damage. Correct spanner is just a piece of tube like a box spanner with the end shaped to fit into slots in nut. Has the seat not turned from new, seems like a visit to dealer is best option.
    Steles
     
  11. terryallan

    terryallan Read Only Funster

    Joined:
    Jan 8, 2011
    Messages:
    13
    Likes Received:
    0
    Location:
    Scotland
    Decision

    Yes I have decided that I am going to the local dealer.

    Thanks again
     
Loading...
Similar Threads
  1. Wildbill
    Replies:
    19
    Views:
    398

Share This Page