| Triumphs Only, Inc. - Triumph Technical Service Bulletin |
Gearbox Input Shaft and Constant Gears- Stag, TR-6
May, 1973
The gear tooth helix angle on the input shaft gear and its mating gear on the countershaft will shortly be changed from 40° to 35°.
Consequently, it will be necessary to insure that you have a matching pair when undertaking gearbox overhauls on the models. The details are listed below:
STAG
| Description | Part # | |
| Constant pinion (input shaft)
40° helix |
216869 | Currently fitted |
| Constant gear (countershaft)
40° helix |
142434 | |
| Constant pinion (input shaft)
35° helix |
219125 | To be incorporated shortly |
| Constant gear (countershaft)
35° helix |
159621 |
TR-6
| Constant Pinion (input shaft)
40° helix |
216871 | Currently fitted |
| Constant gear (countershaft)
40° helix |
142434 | |
| Constant pinion (input shaft)
35° helix |
219126 | Tobe incorporated shortly |
| Constant gear (countershaft)
35° helix |
159621 |
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