| Diagram | Fig. 30 — CARBURETOR, T100C · ref 16 |
| Subsystem | fuel |
| Listed in parts books | 1970–1974 |
Air valve guide sleeve (99- 1051)
Air valve guide sleeve for Amal carburetors, PN 622/134 (99-1051), fits inside the carb body to guide the air slide.
This is the air valve guide sleeve for Amal carburetors used on Triumph twins, catalog number 622/134, also listed under 99-1051. It's a small internal fitting that guides the movement of the air valve (also called the air slide) inside the carburetor body, keeping it running true as it moves up and down with throttle input.
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It shows up across a wide run of carburetor-related figures in the parts books, including T100C and T100R carburetor listings, so it's a piece that gets specified whenever the air valve assembly is being detailed out. If your air slide feels sloppy or catches on its way up and down, a worn guide sleeve is one of the things worth checking.
It's a simple wear item and easy to overlook, but it does affect how smoothly the air valve operates inside the carb body. If you're rebuilding the top end of an Amal carb from this era, it's worth having on the bench.
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