Warning!
- Make sure the motorcycle is stabilised and adequately supported.
- A correctly supported motorcycle will help prevent it from falling.
- An unstable motorcycle may fall, causing injury to the operator or damage to the motorcycle.
1. Fit a new dust seal to the steering stem on the lower yoke.
![](https://motoinstruction.ru/img/triumph/15/121619.jpg)
1. Steering stem; 2. Dust seal
Caution! Protect the threads of the lower yoke when using a press or puller as damaged threads may mean replacing the yoke completely.
2. Press a new lower bearing inner race onto the steering stem of the lower yoke.
![](https://motoinstruction.ru/img/triumph/15/121620.jpg)
1. Bearing; 2. Lower yoke; 3. Press bed
3. Evenly and progressively drive a new complete upper bearing into the frame headstock.
4. Lubricate the lower bearing using a heavy duty, lithium based, NLGI 2 specification grease such as Castrol SpheerolTM LCX 222.
5. Drive a new lower outer bearing into the frame headstock.
6. Lubricate the upper bearing using a heavy duty, lithium based, NLGI 2 specification grease such as Castrol SpheerolTM LCX 222.
7. Insert the lower yoke to the frame, fit the upper bearing and race, and retain with the adjuster nut.
8. Ensure that the threads on the steering stem are free from grease and adjust the headstock bearings (see Steering head bearing - adjustment).
9. Locate the upper yoke to the steering stem. Install but do not fully tighten the upper yoke centre nut at this stage.
10. Fit the forks (see Front fork - installation).
11. Tighten the upper yoke centre nut to 90 Nm.
12. Check that no free play exists in the headstock bearings. Adjust as necessary (see Steering head bearing - check and Steering head bearing - adjustment).