PT-4375 A

PT-4370-10

PT-4370-20

1. Remove the steering knuckle (20) and remove the king pin (12). Refer to Steering Knuckle and King Pin Replacement .
2. Clamp the knuckle in a vise.



3. Remove the king pin seals (1) from the steering knuckle.



4. Remove the king pin bushing using the proper removal tool from the PT4375A or equivalent.
5. Use a Press with a 5 ton capacity to press the bushings from the knuckle bore.

1. Install the top king pin bushing (1) onto the steering knuckle. Use components of the PT-4375A or equivalent as shown in the illustration.
2. Use a press with a 5 ton capacity to start to press the bushings into the knuckle bore 3 mm.
3. Make sure the bushing is straight.
4. On easy steer bushings, press the bushing farther to a depth of 8.94-9.70 mm (0.350-0.382 in) below the top of the upper knuckle bore.
5. On bronze bushings, press the bushing farther to a depth of 3.5-4.0 mm (0.135-0.165 in) above the bottom of the upper bore.



6. Continue to press the upper bushing (1) into the knuckle.
7. On easy steer bushings, press the bushing farther to a depth of 8.94-9.70 mm (0.350-0.382 in) below the top of the upper knuckle bore.
8. On bronze bushings, press the bushing farther to a depth of 3.5-4.0 mm (0.135-0.165 in) above the bottom of the upper bore.



9. Install the bottom king pin bushing (1) onto the steering knuckle. Use components of the PT-4375A or equivalent as shown in the illustration.
10. Use a press with a 5 ton capacity to start to press the bushings into the knuckle bore 3 mm.
11. Make sure the bushing is straight.



12. Continue to press the lower bushing (2) into the knuckle.
13. On easy steer bushings, press the bushing farther to a depth of 8.94-9.70 mm (0.352-0.382 in) below the top of the lower knuckle bore.
14. On bronze bushings, press the bushing farther to a depth of 3.5-4.0 mm (0.135-0.165 in) above the bottom of the lower bore.
15. Ream bushing as needed with use of the PT-4370-10 and the PT-4370-20.



16. Install the steering knuckle (20) and the king pin (12). Refer to Steering Knuckle and King Pin Replacement .