As the successor to the 596S, the 636S and later model SA was the most used civilian Jeep carburetor in the history of the CJ2A and CJ3A. To identify it you are looking for 12 patent numbers within a border. The last one is 2252958. When new, it was yellow-gold phosphate in color with a zinc-phosphate treated cast iron base. The Air Horn has a "Circled-C" clearly marked. The Choke Cable Clamp is divided into two at the top. The Choke Lever Assembly has a "Circled-C&R" stamped in it.The marking under the bump on the bowl side is "O-614 C R". The stamp on the face of the Throttle Flange is "505". On the cylindrical portion of the Throttle Fl is stamped "I-458". As originally installed , the 636 came with a Throttle Shaft Arm Assembly with a ball connect for the governor control rod. There will be more said about the mechanical arrangements for a governor. The 636 was capable of being used with the King-Seeley, Monarch and Novi Governors. The 636S was used beginning with s/n 69589 up to s/n 212110. Beginning with s/n 212110 the remaining production CJ2A's and, up until the 1950 model year CJ3A, the 636SA was the OE Carburetor. Early in 1950, the 698S supersedes and returns as the OE carb. But it wasn't around for long.
Last Edit: Jan 17, 2016 9:39:42 GMT -5 by Scoutpilot
Old fashioned service never goes out of style.
m38mike: Thanks Scout, I'll take a cup. Watching the moon set behind Mt. Antero. Pretty picture.
Apr 20, 2019 5:51:56 GMT -5