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2. The length of the split pin should be suitable if the connecting rod (head screw) of the engine connecting rod is loose, which will cause the loose bearing of the connecting rod, causing the abnormal sound of the engine and even the engine-related parts. Differentiated view of some connecting rod bearing abnormal sound problems, it is often found that the single connecting rod connecting bolt on the locking nut clenching pin is now gone, the reason is mostly due to the long opening pin, high-speed movement and crank arm collision and breaking, Eventually drop. The method for determining the correct length of the split pin is to insert the split pin into the corresponding hole of the lock nut. After the hit with the hammer, the protruding length of the split pin does not exceed the plane of the crank arm, and then the split pin is locked as required. You can.
3. The device direction of the disc spring washer should be correct. The disc spring washer will not produce more scratches on the surface of the machine parts. Therefore, the use of the spring washer in the car is increasing, but if the device is not proper, it will not play. Avoid thread loosening effect. Because the second shaft oscillates forward and backward, the third gear jumps. The correct orientation of the device is probably to face the concave surface of the disc spring washer towards the adapter with the convex surface facing the nut. After the nut is tightened, the disc spring washer is deformed by force, and the supporting surface is subjected to a counter effect and the locking effect is obtained.
Some parts of the automobile chassis (such as the connecting bolt of the shift fork and the shift fork shaft) use stable wire to avoid the looseness of the screw. It is often used to prevent the thread of the bolt set from loosening. It is more reliable to secure the wire against loosening, but the device should pay attention to the selection of the safe wire standard and the tightening direction after threading into the screw hole. The thick wire is not easy to pass through, the diameter should be slightly smaller than the diameter of the perforation, and there can be a slight resistance when crossing. The method of correct and correct wire penetration direction is: if a certain bolt is loosened, the stable wire is under tension, that is, loosening a bolt will tighten the adjacent two screws to correct; otherwise, Incorrect.
5. The locking plate should be locked on the side plane of the nut
Larger pieces of nut lock on the car often use locking pieces to prevent loose, such as the car steering knuckle lock nut, the second axis of the front end of the transmission lock nut. The locking of the locking piece shall be carried out after the nut has been tightened by a regular torque and then the locking piece is folded onto one of the side planes of the nut and hammered together to make it snap. Never lock the tab on the edge of the nut, this will not be an excellent anti-loose effect
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