| Also known as | E9246 |
| Diagram | Fig. 8 — TIMING COVER AND CONTACT BREAKER · ref 1 |
| Subsystem | engine bottom |
| Listed in parts books | 1970–1971, 1974, 1976–1977, 1979 |
Timing cover
Timing cover for the unit Triumph twin that houses the contact breaker points, PN 70-9246 (also listed as E9246).
This is the timing cover for the unit-construction Triumph twin, listed in the parts books under the TIMING COVER AND CONTACT BREAKER figure. It bolts over the timing chest at the front of the engine and houses the contact breaker assembly that fires the ignition. Older parts books list this same piece under the E9246 legacy number, so if you're working from an earlier catalog that's the one to match up.
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The cover shows up across catalog entries spanning 1970 through 1979, which tells you it had a long run in the parts books rather than pinning it to one specific model or year. If you're trying to match this to a particular bike, check your existing cover against the numbers here before ordering, since timing covers changed over the years to suit different points and advance mechanisms.
When you pull the old one off, take a look at the condition of the gasket surface and the points cam bore - a cover that's been over-tightened or cross-threaded at the mounting points is worth replacing rather than fighting with.
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