Diesel engine crankshaft fracture repair method and maintenance precautions
How to solve the sudden breakdown of the diesel engine crankshaft during operation? What should you pay attention to when repairing the crankshaft of a diesel engine? Today, Xiaobian talks about the diesel engine crankshaft fracture repair method and maintenance precautions, I hope to help everyone.
Diesel engine crankshaft fracture repairing method
1. If the flywheel has more than three consecutive teeth damages and is just opposite to the starter teeth, the two gears will not mesh. In this state, simply use the pry bar to turn the flywheel at an angle and press the start button to start it smoothly. For damaged flywheel teeth, solder repair is generally available.
2. When the teeth of the ring gear are severely worn on one side, the ring gear can be pressed down, the front and rear end faces are turned over, and then mounted on the flywheel.
3. When the ring gear is loose, it can be confirmed from the mounting port of the flywheel housing starter. If the ring gear is loose, you will need to replace it with a new one. When installing, the ring gear should be heated in the heating box, and then pressed on the flywheel, and then fastened to the flywheel after cooling.
4. After checking that the gear meshing is normal, the flywheel does not rotate when starting, it should be regarded as internal engine failure, such as the diesel engine crankshaft lock, the piston sticking cylinder, the clutch stuck, etc., which should be further observed. You can check whether the clutch is damaged or not, and then check whether the plunger of the fuel injection pump is stuck and there is any foreign matter inside the engine.
Diesel crankshaft maintenance and maintenance matters needing attention
1. During the repair of the crankshaft of the diesel engine, the crankshaft of the diesel engine should be carefully inspected for defects such as cracks, bending and twisting, and the wear of the bearing bush and the connecting rod bearing bush to ensure the main journal and the main bearing shell, the connecting rod journal and the connecting rod bearing bush. The fit between the gaps is within the allowable range.
2. When the diesel engine crankshaft is repaired, the balance of the flywheel should be ensured.
3. The crankshaft crack of the diesel engine occurs mostly at the transitional fillet between the crank arm and the journal, and at the oil hole in the journal.
4. After a major accident such as burning of tiles or smashing cylinders occurs in the internal combustion engine, the diesel engine crankshaft should be fully overhauled.
5. Find the reason to repair the crankshaft of the diesel engine to ensure the normal operation of the crankshaft of the diesel engine.
6. In daily use, we need to strengthen the maintenance of the diesel engine crankshaft to prevent its damage.
7. Ensure the quality of the lubricating oil; When repairing the assembly, ensure that the matching clearance between the journal and the bearing bush is correct; avoid the engine overloading for a long time.
8. When grinding the crankshaft of the diesel engine, the transition fillet of the joint between the journal and the crank should be kept, and it should not be sharpened into sharp corners. Otherwise, a large stress concentration will occur, causing the crankshaft of the diesel engine to break.
9. Pay attention to the balance of the diesel engine crankshaft, flywheel and clutch. When the clutch assembly is installed on the flywheel, the fixing bolt should be equipped with gaskets. There should be no chattering to avoid the deterioration of the working condition of the diesel engine crankshaft. Regularly check the bearings and flywheels. Pre-tightening force of the fixing bolt.
The above is about the diesel engine crankshaft fracture repair method and maintenance precautions. I hope everyone can understand the diesel engine crankshaft fracture repair method and maintenance precautions, it will be helpful to everyone.