Any motorist periodically encounters the need to perform quality repair of the vehicle. Many prefer to trust this process to professionals, but experienced drivers perform all the manipulations on their own. But not every malfunction can be effectively corrected without the help of special devices. If it is necessary to carry out a high-quality repair of a gas distribution unit, then it is imperative to have a valve expander on hand. Such a product will help to greatly facilitate the manipulation of the block head. The master will be able to depress the spring to freely remove all the crackers.
Description
First of all, the master needs to remember exactly how the valves are fixed in the gas distribution mechanism of any motor. Experts note that the inlet and outlet devices are kept closed using a strong spring. It is fixed on the valve stem with a plate and breadcrumbs. To quickly remove the plug, you need to compress the spring. It is with this task that the valve expander perfectly copes. Such a unit is sold in any car store, but in order not to spend personal savings, you can try to make it yourself.
Varieties of models
Today, there are two categories of valve dehydrators. Each product is distinguished by its performance characteristics, which are highly appreciated by professionals:
- Lever assembly. This is a universal device. It can be used both with respect to the removed head, and without its preliminary dismantling. The only drawback of the device can only be called the fact that the work must be done in pairs (one person presses the spring, and the second takes out crackers). Home craftsmen prefer to make such a valve expander with their own hands.
- Screw model. This product is more convenient to use, as the master can perform all the manipulations on his own. It should be noted that a product of this category is relevant only if the unit head has been previously dismantled.
Principle of use
The first thing to do is to carefully place on the pin the extreme bracket of the dehydrator. Only in this case it will be possible to hold the bed to tighten a nut on it. The figured washer is mounted on a plate, which not only covers the springs, but also presses the lever. The outer side of two crackers is presented in the form of a small cone. In some cases, with a slight pressure on the plate, it may be stationary on the valve stem. In such a situation, it is necessary to hit slightly from above in the middle of the lever with an ordinary hammer. Only when the springs are compressed, can you remove the crackers from the nest.
Manufacturing principle
You can build a quality valve expander with your own hands in just a few hours, using simple drawings during operation. The unit is based on a lever with two powerful brackets attached to it. For fixing, you can use ordinary nuts and screws. As a result, the master should have a swivel. To assemble the device you need to prepare:
- Classic welding machine.
- The grinder.
- Two small brackets for brackets.
- Standard solid metal blank for lever.
- Durable pipe. Its diameter should be slightly larger than the plate itself. The length of the product should be within five centimeters.
In order for the finished homemade valve desander for VAZ to turn out to be as strong and durable as possible, you need to weld a small washer with a diameter of ten millimeters to the most compact bar. A pre-prepared piece of pipe is attached to the resulting workpiece. To bring the structure into action, it is necessary to fix the short bracket exclusively over the edge of the head, and place the middle part on a plate. When you press the handle of the structure, you can quickly press the spring down, freeing up access to breadcrumbs.
Lever model
To build a universal valve expander, you need to prepare a classic set of tools in advance. Work Stages:
- The first step is to make a lever. The rod or pipe must be bent so that it looks like a lightning.
- Two through transverse holes are drilled at the short end. It should be noted that their diameter should correspond to the size of the bolts used.
- Short strips are ideal for making U-shaped brackets. At the free ends, bolt holes are carefully drilled. A washer is ideal for a partition. The bracket is screwed to the extreme hole in the lever. All connections should be as strong as possible.
- At the final stage, it remains only to build from long workpieces identical to the previous bracket, which is fixed on the lever.
High-quality home-made valve expander is absolutely not inferior to the classic factory unit, which can be quite expensive. A self-made tool will last for many years and save a decent amount for the family budget.