Before leaving the factory, the positions of the two large bearing pedestals of the drive shaft have been adjusted. However, it cannot be ruled out that the fixed bolts of M36 are loose due to transportation bumps and stress release during heavy load commissioning, which leads to wear and block off of the sprocket teeth at the inner side of the chain with low hardness. The on-site solution is: first, the manufacturer sprays the primer and intermediate paint before the heavy plate assembly, and then sprays the finish paint after the heavy plate assembly and commissioning. Carefully observe the joint surface between the large bearing pedestal and the bearing girder. If the bearing pedestal moves, the intermediate paint (generally gray) will leak out at a joint surface. The treatment method is to first loosen the large tensioning locknuts on both sides of the rear tensioning tailshaft, then loosen the bolts of the large bearing seat of the drive shaft, pad the end of the bearing seat with a rubber pad, knock gently with a sledge hammer to make the bearing seat return to its original position, tighten the bolts of the head and tailshaft, and conduct a test run. If the deviation still exists, it is that after the heavy load test run, the internal running in and stress release of the chain will cause minor changes in size. The front and rear positions of the large bearing pedestal can be adjusted according to the above steps, and the specific adjustment direction is shown in Figure 3. When the chain deviates to the right, adjust the left large bearing seat backward and the right large bearing seat forward. When the chain deviates to the left, the adjustment direction of the large bearing seat is opposite