Control dimension of the selector end position
1. Using an inertial puller, remove the bearing (3) (see Fig. Shafts and gears of the mechanical gearbox type MT 75) secondary shaft from the gearbox housing.
2. Remove the secondary shaft bearing mounting plate from the gearbox housing.
3. Using a bushing of the appropriate diameter, knock out the secondary shaft ball bearing into the gearbox housing.
4. Remove the 1-2 gear fork axle from the gearbox housing.
5. Remove the sealing ring from the selector main shaft.
6. Using a bushing of the appropriate diameter, remove the needle bearing of the selector main shaft from the gearbox housing.
Attention! In case of replacement of the gearbox housing, the selector should be positioned so that the distance between its end and the housing plane is 69 mm (see Fig. Control dimension of the selector end position).
7. Using a rod of the appropriate diameter, install a new needle bearing for the selector main shaft from inside the gearbox housing.
8. Install a new selector main shaft seal ring into the gearbox housing.
9. Position the selector shaft in the gearbox housing so that its rolled part is directed towards the sealing plane of the housing.
10. Using a suitable rod, press the intermediate shaft needle bearing into the gearbox housing until it stops.
11. Using a suitable rod, press the secondary shaft ball bearing into the gearbox housing until it stops.
12. Install the secondary shaft bearing mounting plate in the gearbox housing and tighten the bolts to the appropriate torque.
13. Using a bushing of the appropriate size, remove the ball bearing from the input shaft towards the front of the clutch housing.
14. Remove the needle bearing snap ring.
15. Using a bushing and a wooden hammer, knock the bearing off the intermediate shaft towards the rear of the clutch housing.
16. Using a puller, remove the selector main shaft needle bearing from the clutch housing.
17. Insert the intermediate shaft bearing into the clutch housing using a rod. Do not install the bearing all the way, leave a distance of 2 mm from the plane of the clutch housing flange.
18. Install a new ball bearing snap ring.
19. Using a bushing, install a new primary shaft bearing into the clutch housing.