| Also known as | T3634 |
| Diagram | Fig. 10 — GEARBOX SHAFTS AND GEARS · ref 12 |
| Subsystem | gearbox |
| Listed in parts books | 1969–1972 |
OIL SEAL HIGH GEAR T150 - 4 SPEED
High gear oil seal for the T150 triple 4-speed gearbox, keeps gearbox oil from leaking out along the high gear shaft.
This is the oil seal for the high gear in the 4-speed gearbox used on the T150 triple. It's a small but important piece that keeps gearbox oil where it belongs instead of working its way out along the high gear shaft. On the old parts books this one shows up under the T3634 designation before the modern 57-3634 numbering took over, so if you're working from an older book and see that number, it's the same seal.
Read more
These seals are cheap insurance against a gearbox that slowly weeps oil out the side case, and since it's a wear item that hardens and shrinks with age over the decades, it's worth checking if yours has never been swapped. Sold individually, so if you're doing a full gearbox rebuild check what else needs replacing at the same time.
Call the shop if you're not sure which seal your particular gearbox needs — there were other seals used elsewhere in the same box and it's easy to grab the wrong one.
Sorry if we got something wrong here. If you think this information isn't correct, .