| Also known as | E8783 |
| Diagram | Fig. 4 — CYLINDER HEAD AND ROCKER BOXES · ref 28 |
| Subsystem | engine top |
| Listed in parts books | 1969–1972 |
ADJ PIN-TRIDENT
Rocker adjuster pin for the Trident triple, cylinder head/rocker box assembly; also listed as E8783.
70-8783 is a rocker adjuster pin for the Trident triple, listed in the catalog under the cylinder head and rocker box section. It's the pin that bears against the valve stem end at the top of the rocker, taking the adjustment set by the tappet screw and passing it through to the valve.
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This one appears across catalog entries from 1969 through 1972 and also shows up under the older E8783 number, so if your parts book or an old box of spares has that stamped on it, it's the same piece. The factory later moved on to 70-8783M, described as a mushroom-style pin, and catalog notes indicate that newer pin can be used in place of this one.
If you're rebuilding a Trident top end and pulling old rocker gear apart, it's worth checking the pin ends for wear where they've been riding against the valve stems — that contact point takes a beating over the years. Confirm which rocker box and valve setup you're working with before ordering, since the catalog doesn't spell out further fitment detail beyond the Trident listing itself.
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