| Also known as | W1640 |
| Diagram | Fig. 19 — FRONT WHEEL · ref 33 |
| Subsystem | wheels |
| Listed in parts books | 1965–1968 |
Abutment (9/16 in. deep) as required
Front brake cable abutment, 9/16 in. deep, for the front wheel/brake assembly, appears in catalog listings from 1965 to 1968.
This is the front brake cable abutment, part number 37-1640 (also listed as W1640), a small fitting that lives in the front wheel/brake assembly on the front brake plate. The abutment gives the outer casing of the brake cable a fixed point to bear against so that pulling the lever draws the inner cable through and applies the brake shoes, rather than just pulling the whole cable loose from its mount.
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It's specified as 9/16 in. deep, and shows up across catalog listings from 1965 to 1968 tied to the FRONT WHEEL figure. These fittings take a lot of quiet abuse over the years from cable tension and vibration, so if the abutment on the bike looks worn, cracked, or the cable's slop has gotten worse than it should be, it's worth checking this part.
If your parts book lists it under W1640, that's the same physical piece — just the older number form. Call the shop if you want us to confirm it matches what's on your front brake plate before you order.
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