Excessive clearance of the water guide bearing of the hydraulic generator affects the performance of the bearing. According to relevant public information, the clearance and preload of the guide bearing affect the performance of the bearing and the operating stability of the unit. Small gaps can cause high temperatures in the tiles or cause tile burning accidents. The large deviation causes significant oscillation of the unit rotor operation, which affects the operational stability of the unit.
1. Remove the inner cover, handrails, brackets, etc. of the hydraulic wheel.
2. Remove the water seal device from the water guide bearing (1# machine is seal, 2# machine is rubber flat seal).
3. Remove the external pipe from the water tank, remove the water tank fixing bolts, lift the water tank and use ahoist to remove it from the water truck room after decomposition.
4. Push the shaft to the water guide and measure the clearance of the water guide tile as a reference for maintenance and adjustment of the water guide bearing. 5. Loosen the anti-weight bolts of the water guide slab, use a jack to lift the water guide slab, then use a hoist to lift the water guide slab and lift it halfway out from the water truck room. Pay attention to marking the orientation of the water guide tiles.