| Diagram | Fig. 23 — FRONT BRAKE · ref 52 |
| Subsystem | brakes |
| Listed in parts books | 1974, 1976–1980, 1983 |
363-400 Cover, bleed nipple - 1 Girling part
Rubber protective cap that fits over a Girling brake bleed nipple to keep the valve clean.
This is the small rubber cap that fits over a bleed nipple on a Girling hydraulic brake system, listed in the catalog as 363-400 and carried under Triumph part number 60-4266. It shows up in the parts books for front brake and rear brake figures as well as the twin brake condition listing, which tells you it was used across more than one caliper location on bikes running disc brakes.
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Its job is straightforward - it keeps dirt, grit, and moisture out of the bleed valve threads when you're not actively bleeding the brakes. Not a glamorous part, but leaving it off or riding around with a cracked or missing one lets crud sit right where you need a clean seal every time you service the brake.
Since this one covers a Girling bleed nipple on a hydraulic disc setup, it's not something you'll find on the older drum-brake machines. Cheap enough and easy to lose track of, so it's worth having a couple of spares in the parts drawer.
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