There are many reasons for the fracture of agricultural engine crankshafts, which can be prevented from the following aspects:
1. Broken due to poor crankshaft manufacturing quality. Therefore, when assembling the engine, it is necessary to use quality products from well-known manufacturers to prevent the installation of inferior components in the body.
2. When repairing the crankshaft, the main bearings of the crank chamber should be concentric, and the ground crankshaft should handle the crankshaft fillet. Prevent shaft misalignment and balance weight iron dislocations during installation. When installing the crankshaft, it is necessary to use torque wrenches, especially when tightening the connecting rod screws, alternately and evenly tighten as required, and lock the split pins. It is found that connecting screws and spindle screws are cracked, damaged, and strained, and new screws must be replaced in time.
3. The engine is overloaded for a long time, and the crankshaft is broken easily by slamming on the clutch and slamming the throttle and braking at will. Abnormalities in the operation should be checked in a timely manner. If there are serious knocks, single-cylinder non-fire, black smoke, and unsteady work, stop immediately for inspection and repair. Always keep the engine well lubricated, check the quality of the lubricant and prevent impurities and dust from entering the machine.
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