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harvest

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    early brass carburetor for?

    in What is it?

    Posted

    5 hours ago, carbking said:

    The Schebler models D and M, as mentioned earlier, were used on a large group of passenger, motorcycle, truck, tractor, agricultural, industrial, and marine applications. 

     

    The model D came in 6 different physical sizes.

     

    The model M came in 3 different physical sizes.

     

    The earlier versions have no markings that will help with absolute application.

     

    By the late 1920's, at least some of the tractor versions had the identification number STAMPED on the bowl. An example would be DX-320 used on a Hart-Parr.

     

    Many of these carburetors have NO throttle; the throttle valve being incorporated in the intake manifold.

     

    The "gate valve" throttle was early; not sure exactly when it was discontinued, but would GUESS very early 'teens.

     

    The design is interesting in that the throttle casting could be interchanged with the air valve casting; thus the carburetor could be configured as either an updraft or sidedraft unit.

     

    When rebuilt with a new air valve and air valve spring, these carburetors are some of the very best and most reliable of the early carburetors. Once engines with higher RPM became more common, these carbs became less useful.

     

    Finding literature on these things is more difficult than winning an argument with the IRS!!! I have repeatedly begged for photocopies from O.E. factory parts manuals, with very little success. The original Schebler literature covers the 6 "standard" model D carbs, 3 Hart-Parr, and a couple of John Deere. The model M is simply a model D with a check valve.

     

    There is another carburetor labeled "Acorn" which is identical to the model D, excepting the name. I do not know the relation of the Acorn to the Schebler.

     

    Jon.

    thank you John for your time

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