| Also known as | T665 |
| Diagram | Fig. 8 — GEARBOX SHAFTS, BEARINGS AND INNER COVER · ref 1 |
| Subsystem | gearbox |
| Listed in parts books | 1964–1970, 1974 |
High gear bearing (ball Journal)
Sealed ball journal bearing for the high gear shaft inside the gearbox, parts book number 57-0665 (formerly T665).
This is the high gear (mainshaft) ball bearing for the gearbox, listed in the parts books under 57-0665 and, on earlier documentation, T665. It shows up in the GEARBOX SHAFTS, BEARINGS AND INNER COVER figure, which places it right where the high gear rides on its shaft inside the gearbox shell.
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It's a sealed ball journal bearing, and it's one of those parts that quietly does its job until it doesn't — worn out or loose bearings here show up as noise or play in the gearbox before anything more serious happens. The catalog carries this number across a long span of production, so it's a part that stuck around in the system for a good while.
Same physical bearing also turns up under other catalog numbers depending on which parts book or supplier list you're working from. If you've got a different number written down for your gearbox, it's worth cross-checking before you assume it's a different part.
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