Is there a washer under the Santana 3000 valve spring?
2 Answers
There is a washer under the Santana 3000 valve spring, which is a flat-shaped metal ring. The main functions of the washer and spring washer are: 1. The washer serves to connect, fasten, and seal. 2. The spring washer provides an external force to the nut after tightening, thereby increasing the friction between the nut and the bolt. Additional information: The retaining ring of the spring washer is an elastic pad or anti-loosening washer that prevents the bolt from loosening. The working principle of this anti-loosening washer is quite simple. It consists of two washers, with the outer side having a radial convex pattern and the inner side featuring an inclined tooth surface. When assembled, the inner inclined tooth surfaces face each other, while the outer radial convex pattern engages with the contact surfaces at both ends. This ensures that when the connected parts are subjected to vibration, the bolt tends to loosen, causing the inner inclined tooth surfaces of the two washers to move relative to each other, achieving a 100% locking effect.
I previously disassembled the engine of a Santana 3000, and there was indeed a shim under the valve spring, made of copper, about the thickness of a coin. This thing is mainly used to adjust the spring pressure. If it's installed backward or lost, the car will make a ticking noise when driven. Last time, my neighbor didn't pay attention to this small shim when repairing the car, and as a result, the valve didn't seal properly, causing engine oil to leak everywhere. I suggest you take a photo of the original setup with your phone before disassembling, so you don't make a mistake when reassembling. Parts for old cars are hard to find now, but this kind of small shim can still be matched at auto parts stores. You'll need to bring the old part for comparison.
