There have been various modifications, and even STC 's, designed to address the retrofit of this lifesaving equipment. But first, there is the legality issue. Fortunately, this is one area where the FAA has seen fit to err on the side of safety; evidently someone decided that some kind of shoulder harness, even any kind, is better than none at all. While the Feds would ideally like to see an STC or Field Approval, they acknowledge that as long as the airframe is not structurally modified or compromised, you can install shoulder harnesses with a simple log book entry.
They don't even have to be approved aircraft harnesses. Never a bureaucracy to let a simple statement run around naked, here's the FAA's discussion of the ramifications of the policy statement : Policy Statement Discussion doc file, 0. These mate with the seat belts, also from Hooker, that are legal replacements for the front seat belts. The entire get-up looks like this : Shoulder Harness Installation jpg file, 0. The shoulder harnesses are capped off with stylish sheep skin pads from Wal-Mart, and they don't even interfere with the rear seat passengers.
While we all get creative at accessing hose clamps, hoisting jigs, and the like, the bolts on the main gear trunnions require a wrench so bizarre it is specifically illustrated in the Navion manuals. And rightfully so. Here's a list of links which may be of interest to Navion owners:. Folks in the New England area in need of an annual, a pre-buy inspection, assistance with ferry permits or ferry flights, or just general help with parts or questions should feel free to get in touch with me at my shop, Ack Emma LLC , where you will also find a link to our manufacturing division, General Technics.
The best way to contact me is to click here to send me an e-mail, or phone me at or I'm always happy to meet with Navion owners, or potential owners, at Danbury airport in western Connecticut.
Tom DeLuca Tom doesn't have a website, but he does have everything you could possibly want for a Navion. He's in Cabazon, CA, and his phone number is His fax is Seriously, if you need anything , call him. To access it, call him at American Navion Society This is the link to the major Navion type club. Potentially good source for parts and information. Vintage Bonanza Another good source of E series engine, accessory, and Hartzell prop info. Navion Group Frankly, these are the new type clubs; they just haven't realized it yet.
Post a question, get an answer. A good answer? You decide. Use anti-virus software religiously if you download from these groups, and please make darn sure your files are clean before you upload! Personally, I think that as parts availability shrinks, these user groups will provide a better database for parts than the "official" type clubs. After all, if you holler for a part on a user group, you're bound to get a response from several folks in the same predicament.
The type clubs only have one guy trying to accomplish the same function. It makes it much easier to file a if you can show your FSDO that a modification has been accepted in the past, and we need all the help we can get to keep these classic airplanes flying! Also, my sincerest appreciation to Bill for generously providing the storage and bandwidth for the Navion Files Site you are reading right now! If you're a real glutton for download punishment go to:.
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Marvel schebler carburetor compatibility any engine compatibility 6a4 series 6al series c series g4v series o series o series tbd vo series about us. Instruction sheet and diagram shows parts that are not included for reassembly purposes only. The Marvel-Scheber carburetor consists of an idle circuit, float system with metering needle, power valve, venturi and choke function. These components work in conjunction with each other to delivery a precise, metered amount of fuel to the engine system.
Fuel atomizes in the carburetor throat and enters the engine cylinders for combustion. A float bowl that contains a hinged float, controls the amount of fuel that enters the carburetor.
Adjusting the float to the proper height insures proper fuel delivery, or fuel starvation or flooding results. Position the vehicle or engine for easy access to the top of the carburetor. Unclasp the snaps, and pull back the engine cowl if so equipped on a tractor or other farm vehicle. Use a screwdriver to remove the case side or top covering if working on a generator. Use a socket to remove the negative battery cable. Turn off the main fuel supply valve to the carburetor.
Use a socket or screwdriver to remove the air cleaner assembly housing, including any draft tube or ventilation tube to the air cleaner cowl. Use a pair of needle-nose pliers to remove the retaining pins that hold the two linkage rods on the carburetor. Pull the throttle cable socket off the linkage ball on the cam. Don't lose the small retaining pins, or cotter pins. Use a fuel line wrench to loosen and remove the fuel line from from the carburetor. Place a rag underneath the fuel line to catch drippings.
Pull the heat tube free if it has one attached to the carburetor.
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