| Also known as | W1090 |
| Diagram | Fig. 22 — REAR WHEEL · ref 31 |
| Subsystem | wheels |
| Listed in parts books | 1960–1962, 1964–1968, 1970, 1973–1974 |
Lever return spring
Return spring for the rear brake operating lever on the rear wheel assembly.
37-1090 is a lever return spring that lives in the rear wheel assembly, showing up in the catalog under the rear wheel and quickly-detachable rear wheel figures. It's the small spring that pulls the brake operating lever back to its rest position once you let off the rear brake, keeping the linkage from dragging or hanging up.
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This one turns up across a long run of catalog listings, from 1960 through 1974, and also appears under the older W1090 form if you're working from an earlier parts book. It's a simple, low-cost item, but a tired or stretched spring can leave the rear brake lever sluggish to return, so it's worth a look any time you're servicing that end of the bike.
If you're not sure whether your rear wheel is the quickly-detachable type or the standard type, check your parts book figure - this spring appears in both listings, so either way it's the correct return spring for the rear brake lever.
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