[Xa2600Sprint]

Thank you Gordon for your reply. But I must say I am a bit confused... what do you mean by "3#" ?
Xavier

 

[Gordon Raymond]

Neither does. Just a belt AND suspenders application. The floats set-up in DCD and Solex is totally different than DCOE's, making them more pressure tolerant. However, the Fispa / Filter King offers a filter as well as more even fuel fill.

 

[Gordon Raymond]

Three pounds pressure.

 

[Xa2600Sprint]

Thank you Gordon for your precision. I am not very familiar with the imperial units and acronyms...
Concerning the float level : in the table present earlier in the thread we read « 5 ». Can someone help in understanding how do we measure it, the unit ?
Thank you by advance for your support.
Xavier

 

[alfasprinty]

Hi Xavier and all,

Here is what I found in the Weber catalogs
The « 5 » that you mentioned means 5 mm.
The picture with fig. 3 is from a 36 DCLD3 but shows what is meant by the 5 mm.

What kind of 36DCD do you have ? The very early 36DCD had a different setting of the swimmer ( 7 mm) instead of the later 5 mm of the 36 DCD3 and 36 DCD7.

Here for the 36 DCD7: a picture of the procedure in Italian language and an explaining drawing from an old Weber catalog.

Firstly, the swimmer ( float) should be able to rotate freely round the fulcrume pin.
Check on a scale whether the swimmer (G) has the correct weight ( 18 grams)
Normally the weight is also marked at the lip (A) of the swimmer.

You can find two types of swimmer needles (S)
The old type > without retaining hook:

The newer type > with the retaining hook:

Before testing the level, be sure that the needle has a gasket and that it is screwed completely in the cover.
Both needle types work the same way but during the testing just check that the needle retaining hook (R) doesn't obstruct the swimmer and the needle from moving freely.

Remove the cover (C) from the body, then remove the gasket from the cover as the measuring should be done without the gasket. That gasket is rather fragile (thin) in the middle !

For testing the fuel level you need to remove just the carburettor cover from the car and check the position of the swimmer.

Some extra pictures about the test in a second post.
Rgds,

Thierry

 

[alfasprinty]

Test:

Place the cover of the carb in vertical position. I use a 90° hook as on the picture.

In that position the second lip (Lc) of the swimmer should just touch and start pushing on the little ball (Sf) of the swimmer needle.

Now you can measure the distance between the underside of the cover (plane surface) and the swimmer. It should read 5 mm.

!...using the soldered seam of the brass swimmer as a measure point that can protrude, could give an incorrect reading !

! ... measure also the second half of the swimmer !



The swimmer may move over a distance of 8,5 mm. For measuring that I turn the cover 180° upside down, that way the swimmer moves to its maximum position. In that position the distance between the same plane surface of the cover and the swimmer should be 13,5 mm ( 5 mm + 8,5 mm)

The 8,5 mm can be corrected at the lip (A)



If the swimmer is not in the correct position ( 5 mm) , you can make a correction at the two swimmer arms (L), checking again afterwards that both the swimmer halfs are on the correct 5 mm distance from the cover.
Hereby also taking care that the lip (Lc) remains perpendicular to the axis of the swimmer needle.

! ... take care that the lips A and Lc are not distorted !

Check the gasket before mounting back the cover on the carb and check also that the swimmer can move freely without touching the float chamber wall.

Hope this helps,

Thierry

 

[Xa2600Sprint]

Hello Thierry,

thank you very much for your very clear, detailed and very well illustrated answer ! It’s great !!!
And I think that I am not the only one who will appreciate your answer !
Just have to check now .

Have a good end of weekend,
Xavier

 

[Gordon Raymond]

NOW we have seen the true value of the BB as members that know-what-to-do have posted!
Love It!
Thanks!

 

[alphil]

Awesome Theirry,thank you.Thought I'd add a photo with English text showing the float adjustment using a Weber factory guage.As you mentioned,the measurement is taken from the float body,not the soldered lips.The guage(5mm)has cut-outs at the soldered lips of the floats so they don't interfere with the actual measurement.Guage looks easy enough to make,and if I were to make one,its width would be 13.5mm,also with cut-outs for float lips,to be used to measure the fully opened float position,seems logical?

 

[alfasprinty]

Hi Phil,

Thanks for adding the English text, I never saw the Weber factory gauge before.
When studying your drawing of that Weber gauge, can't we say that the right side of that gauge would be intended yet to measure the 13,50 mm ? At least I see two different thicknesses on the gauge.

Rgds,

Thierry

 

[alphil]

Yes,totally makes sense,I completely overlooked that.After looking at the tool section in my 28/36DCD service manual,the drawing clearly shows that part #6,float level guage, has two thicknesses.Thanks for pointing that out,good eye.Phil

 

[alfasprinty]

Thanks for the extra pictures to make the thread more complete.

Rgds,

Thierry

 

[Xa2600Sprint]

Thanks to all! I think that indeed that thread on the Weber DCD36 is quite complete now !
Xavier