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type IV carby linkage play

Discussion in 'Fuel System & Electrics' started by deger, Jul 12, 2020.

  1. deger

    deger Active Member

    Messages:
    253
    Location:
    Melbourne
    Just fitting up my throttle linkage crossbar and was wondering how much play is normal on the RH (Driver) side? The LH is quite play free but the RH has movement in the plastic plunger/ball end in the cross tube and also in the linkage top ball housing. With the amount of movement combined, there is no way I'll get them to synchronise.
    I tried to find a replacement plunger but in case it is just worn but no luck . Similarly, the right hand adustable carby linkage isn't showing up anywhere as a replacement part (neither does the left).
    What is 'normal' for the amount of play?

    Darren
     
  2. deger

    deger Active Member

    Messages:
    253
    Location:
    Melbourne
    These are the ball sockets that have worn on my carbie linkages. I can't find any replacements listed anywhere.
    Some have suggested replacing them with HEIM joints. but that would required grinding off the balls on the carbies and drilling holes.
    Is that what others have done?



    IMG_1905.jpeg IMG_1906.jpeg
     
  3. tintop

    tintop Well-Known Member

    Messages:
    817
    Location:
    Canberra
    If you can't come up with a new one you could try metal putty in the socket, then before it sets, oil/grease up the ball and insert it...they also make one for plastic Screenshot_20200802-132254.png
     
    Grantus likes this.
  4. deger

    deger Active Member

    Messages:
    253
    Location:
    Melbourne
    Thanks for the tip. Someone else mentioned it and it seems less drastic than drilling off the balls on all the carbies. Probably needs very little in there as well. Will definitely give it a shot if I can't get replacements.
     
  5. grumble

    grumble Well-Known Member

    Messages:
    1,288
    Location:
    Taree
    Some of the better Auto Acessory and speed shops have universal linkages with balls, I have used these on a few kombis, if the ball is badly worn grind the old one off and drill the arm to suit the new ball. From memory there are different lengths of rods too.
     
  6. deger

    deger Active Member

    Messages:
    253
    Location:
    Melbourne
    Thanks Grumble. The issue is that the balls are steel and part of the Carby bodies and would require modification to use the HEIM style joints that are readily available. I was hoping to just get the alloy sockets which are the parts that wear.
     
  7. Dapom

    Dapom Well-Known Member

    Messages:
    767
    Location:
    Brisbane
    I have no idea really about this but maybe try a gas strut shop? They will have varying sized socket ends for struts....there might be one of a suitable size...?
     
  8. Mordred

    Mordred Super Moderator Staff Member

    Messages:
    2,963
    Location:
    Penna, Hobart
    Speco make different length of adjustable linkages. Get them on eBay. Very close in size but may be close to the choke covers. Might be something you can work with. Look for Weber linkages.

    Adrian
     
    grumble likes this.
  9. deger

    deger Active Member

    Messages:
    253
    Location:
    Melbourne
    Dapom, the gas strut idea is worth checking into. Thanks.
    Adrian, I visited Speco. All modern carburettor setups use a different kind of system; typically a HEIM joint which does away with the cup and ball joint we're used to (see below)
    . It is possible to switch to these but it would require modifying the brackets on the carbies ie removing the balls. As everything has been beautifully assembled by 1500king, I'm not keen on dismantaling them.

    [​IMG]
     
    Dapom likes this.
  10. Wayne murray

    Wayne murray Well-Known Member

    Messages:
    4,160
    Location:
    Seven hills
    If 1500 king assembled why not ask 1500 King,shore he have something that could replace or fix issue for you.
     
    oldman likes this.
  11. Mordred

    Mordred Super Moderator Staff Member

    Messages:
    2,963
    Location:
    Penna, Hobart
    Second for 1500 king but just covering off, these speco ones are ball and cup fitting Like I was referring to. They ar3 for the older type Weber linkage set ups. I bought some a few months back and the balls are very close in size.

    Adrian 2A6CF0D0-C7BC-4480-BA74-FE9D7E2A5995.jpeg
     
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  12. rabidkombi

    rabidkombi Member

    Messages:
    79
    Location:
    Sydney
    What size is the ball on the carburettor M8 ?
    How long is the rod length between the two ball socket ends?
    Is this length the same on both linkage rods?

    Cheers,

    Pete
     
  13. KahunaKombi

    KahunaKombi Super Moderator Staff Member

    Messages:
    22,141
    Location:
    Bracken Ridge, Qld
    Darren, you have a message ;)
     
  14. grumble

    grumble Well-Known Member

    Messages:
    1,288
    Location:
    Taree
    Deger, this is the link that I was talking about, there are a couple of different suppliers of these, I don't understand what you meant by the rods being part of the carby the arms are held to the shaft by a nut.
     
  15. Mordred

    Mordred Super Moderator Staff Member

    Messages:
    2,963
    Location:
    Penna, Hobart
    I think he is referring to one side of a standard set which are not adjustable as they are welded/soldered together. If you replace them with an adjustable you want set them at the same distance as the fixed ones are, then set up the other side so they both start taking up load at the same time. All of them pop off with a little pressure applied, but the speco and some others have a spring clip to secure them.

    Adrian

    Adrian
     
    grumble likes this.
  16. grumble

    grumble Well-Known Member

    Messages:
    1,288
    Location:
    Taree
    Adrian my VW days began at a VW dealership back in 1966 and I worked on them until I retired just on 10 years ago but still keep in touch with them, I thought he was talking about the arm being part of the carburettor, over the years I have changed the rods and balls successfully on a lot of these and the type 3 carbs too.
     
    Mordred likes this.
  17. Kai

    Kai Well-Known Member

    Messages:
    4,775
    Location:
    Sydney, NSW
  18. grumble

    grumble Well-Known Member

    Messages:
    1,288
    Location:
    Taree
    Kai a lot of times the ball is worn too, remember it has worked as many times as the rod has pulled it and you look pretty silly trying to explain to a customer why the link has fallen off again when you have just fixed the problem. New balls and a new rod eliminates any slop and possible customer irritation.
     
  19. Kai

    Kai Well-Known Member

    Messages:
    4,775
    Location:
    Sydney, NSW
    I wouldn't think the ball is exposed to as much wear and the socket. the ball is staked/peened to the linkage, not bolt on. I would expect the wear in the socket is from the up and down movement and when the socket is removed

    Photo from the samba.

    [​IMG]
     
  20. rabidkombi

    rabidkombi Member

    Messages:
    79
    Location:
    Sydney
    Must agree with Les,best to change both ball and socket
    Not hard to do and then make up own adjustable linkages or buy a set the correct length
     

    Attached Files:

    grumble likes this.

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