| Diagram | Fig. 13 — FRAME — BATTERY CARRIER — ENGINE SHIELD · ref 50 |
| Subsystem | electrical |
| Listed in parts books | 1971 |
HOOK BOLT CRANKCASE UNDERSHIELD TRIUMPH
Hooked J-bolt that mounts the front of the Triumph crankcase undershield (sump guard) to the engine.
This is the hook bolt (also called a J-bolt) that anchors the front of the crankcase undershield, sometimes called a sump guard, to the engine. It's the small hooked fastener that lets the shield hang secure against the bottom of the motor rather than rattling loose or working its way off over rough roads.
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The part number 21-2096 shows up in catalogs tied to the TR6C sump guard setup, and the same hooked stud has been used as a substitute on earlier models that originally called for a different J-bolt number. If you're replacing a lost or rusted-out hook bolt on your undershield, this is the piece to look for.
It's a small, inexpensive item to keep on hand, since these are easy to lose or snap off during a shield removal. Zinc plating is common on this style of fastener, so don't be surprised to find it finished that way.
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