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View Full Version : Late Schebler HX needle lift lever question



T. Cotten
04-25-2011, 09:15 PM
Tommo and All!

Most H model Scheblers I encounter have a roller upon the needle lift lever, but on occasionally I encounter the one shown in the '28 Service Station manual, as in my attachment.

Previously I found worn balls staked into the end of the finger.
But a very pristine example has appeared to never have accepted a ball.
Instead, it is drilled smaller, for a nub that has disintegrated to a fibrous chalk-like material.

Was this proper, and if so, what was the material?

Thanks in advance as always,

....Cotten

Tommo
04-26-2011, 12:05 AM
Cotten,
They had a reddish / brown material that had a consistancy not unlike a fibre washer.
The external dia was the same as the end of the cam follower and the end that rubbed on the cam track had a rounded end.
Modern slippery plastic / teflon is ideal and you can buy here in NZ stuff that is almost the right colour that fits the bill nicely.
If you have a badly worn cam track you can increase the dia of the follower and bridge the worn track by bearing on either side of it.
Hope this helps

T. Cotten
04-26-2011, 07:40 AM
Thanks, Tommo!

I have plenty of left-over PEEK that should do;
Are the ones with balls "incorrect" repairs?

....Cotten

Tommo
04-26-2011, 03:11 PM
Cotten,
I've never seen one with a ball in but that doesn't mean it wasn't done by Schebler, just that I've never seen one.

23JDCA 808
04-27-2011, 07:53 AM
This is a scan of page 30 from the 1928 Schebler Carb manual.
http://www.97330.com/Schebler_H_ballEnd_2.jpg

exeric
04-27-2011, 09:40 AM
http://i534.photobucket.com/albums/ee341/cdo340/shebnib2.jpg

Looks like a more gentle cam follower than the knurled roller that always seems to be locked up. Good observation Cotten, and good information Tommo.

T. Cotten
04-28-2011, 09:16 PM
Although my PEEK surplus would do the job quite well..
I have a large board of phenolic stock that may provide a much more authentic replacement.

If it were my own carb, however, a ball bearing would be my choice.

...Cotten

T. Cotten
06-16-2011, 08:40 PM
I changed my mind about using a ball.

When I began to weld out the detente ball from the needleknob, the warming caused the fiber cam follower to relieve itself from the lever with a pop!

This left a pristine bore with reflective plating clear to the bottom.
I believe the plating to be true electro-plate (not 'electro-less'), so it astounds me when some modern electro-platers cannot even get good coverage between cylinder fins!

And upon cutting some phenolic circuit board, (requiring a bit of trial and error, and even more patience), I produced as 'correct' a replacement as I can imagine.
(The red stripes are the from the "fabric" construction of the board.)

So now I guess the ball idea was barnyard after all.

Thanks to all,

....Cotten

MMasa
06-17-2011, 07:03 AM
Cotton
Phenolic or Micarta rod is available as a stock item from some plastic material suppliers. Not sure if it's available in that diameter, but it probably is.
Mark Masa

T. Cotten
06-17-2011, 07:35 AM
Mark!

The diameter is .098", and at .2875" long, so buying feet of it would be a waste, especially since I have a lifetime supply of board from the dumpsters.

By any chance is there a special name for the red fiber material that seal washers are cut from?

And does anyone know when copper crush washers were first introduced for the bowlstems on carbs?
Perhaps not until Linkerts?

Thanks to All in advance as always,

....Cotten