Disassembly
Half rings fixture A.74108/R (pic. 83) encircle the bearing and install the axle shaft vertically so that the half rings rest on the thrust ring. The axle shaft is placed under the press and a gradually increasing force is applied to the splined end of the axle shaft until the locking ring is removed. This ring is not reused, but replaced with a new one. Check whether the seating surface of the axle shaft has scratches or damage. If necessary, the axle shaft is replaced with a new one.
Assembly
Install vertical axis 2 (pic. 84), resting it with a flange on the ring 1 (A. 74107/R) fixtures. Install on the axle shaft pre-connected with two screws the oil deflector of the bearing of the axle shaft and the mounting plate 6 with a gasket, install the bearing 3 of the axle shaft. Insert a new locking ring 5 into a special holder 7 (A.74107/4R), put in an oven and heat the ring to approximately 300°C so that at the time of pressing onto the axle shaft its temperature is 220-240°C.
The locking ring is pressed onto the axle shaft with a mandrel 4 (A.74107/2R) on a press with a force not exceeding 6000 kgf so that the inner ring of the bearing is sandwiched between the locking ring and the shoulder of the axle shaft.
After pressing on, make sure that the ring does not move under an axial load of 2000 kgf. To do this, the axle shaft assembly is mounted on fixture A.95601 / R (pic. 85) and locking ring 4 is clamped in a special vice. Attach indicator 1 with a division value of 0.01 mm to the flange of the axle shaft 2. After setting the indicator arrow to zero, apply the indicated axial load, creating a torque wrench 3 of 8-8.5 kgf-m on the screw rests against the end of the axle shaft, rests through the ball at the end of the axle. In this case, even the smallest gap between the locking ring and the inner ring of the bearing 5 should not appear.
After removing the load and unscrewing the screw of the device, the indicator needle should return to the zero position. This proves that there was no shift of the locking ring on the axle shaft. Otherwise, it is necessary to replace the axle shaft with a new one.