First off, I looked through back threads and did not see any answers. How do you remove the choke shafts on the 97's. Do you need to drill them out? Once I have them removed, how does the new shaft stay in? Thanks
Actually, it is rather impossible to remove the end plug without breaking the tip off as it is no larger than a pencil lead. So, take a pair of pliers and give the end cap a little twist and it comes of. remove the 2 screws that hold the choke plate in and remove the shaft by simply pulling it out. Now, when you replace the shaft and reinstall the plate screws, that in itself will hold everything together. DO NOT forget though, to either peen the screws or use locktight on them when reinstalling.
The pump dischages were not considered serviceable by Stromberg, but you can get parts now...the US Army Stromberg manual actually covers replacing them! The little raised brass part where they emerge from the casting is a conical brass wedge. Wiggle that out, mangle as needed to remove, replace with new parts. Now...WTH?? There is no need to remove choke shaft unless it is worn out, something I haven't seen...Plate can be weaseled out for derusting on its own. Likewise the pump tubes...are they clogged?? Usually they can be cleared with solvents, and then Uncle Max sells a neat tool designed to blow out crud. I have one modified for my 1932 "Arm Strong" compressor, and it blows away the dust left behind after solvent kills off the sticky stuff. Need to remove those tubes is unusual.
When I rebuild them, I like to clean EVERYTHING I can, excessive to pull the choke shaft? Yes. Necessary? Not at all. I can get the plug out with out breaking them, I made a special wedge type tool I can tap between the air horn and the plug and it slides out just fine with no damage, once out you can see it has splined shaft about the size of a pencil lead as stated before. Just be careful, it can be done.
A wedge tool would be a very sensible way. Ford overhaul book shows a pair of pliers with the wirecutter part used as the wedging tool...this would work, obviously, but would likely mark up the casting somewhat. If doing it that way I would grind down a pair of dykes so cutting edges were chisel ground with flat against casting. Won't worry about it til I get a carb with bad choke shaft.
The cutting torch cleaning tool,(all different sizes) is a great tool to clean the tubes. The smallest cleaner wire will fit and bend at the curve. Soak it first.. Duane..
Max, you crack me up. For the other comments, I don't remove them either unless the customer wants them removed, which is the case with 98% of them. Actually of what good reason are those plugs in the end anyway, they do ABSOLUTELY NOTHING but make it look good, daaahhhhh!
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