| Also known as | T1090 |
| Diagram | Fig. 5 — GEARBOX SHAFTS AND GEARS · ref 12 |
| Subsystem | gearbox |
| Listed in parts books | 1963–1964 |
THRUST WASHER,T20 MAINSHAFT
Thrust washer for the T20 gearbox mainshaft, part number 57-1090.
This is a thrust washer for the mainshaft on the T20 gearbox, listed under part number 57-1090 (also shown as T1090 in older parts books). It shows up in the gearbox shafts and gears section of the catalog, where it sits on the mainshaft to control end float and keep the gear cluster running against the right face.
Read more
The catalog record ties this part to the T20 model designation and shows it appearing in gearbox listings from the early 1960s. If you're rebuilding a gearbox and need to check which thrust washer goes where on the mainshaft stack, it's worth laying the shafts out and matching this against the parts book diagram before you order.
We don't have much more detail on this one beyond what's in the catalog entry. Give us a call if you want to confirm it's the right washer for your gearbox before it ships.
Sorry if we got something wrong here. If you think this information isn't correct, .