Before this, we posted an article about braking problems, Point out that many roadside shops are for the benefit, Replace some of the original brake valve parts, In fact, it is to increase the excess air volume of the master pump or the relay valve, Gives a feeling of increased braking power.
WHAT IS THE PRINCIPLE ?
In fact, it only ignores the part of the stroke with a small amount of braking air, Directly into the atmospheric journey. Bring the area with greater braking force to the premise, Feeling a light brake on the foot, Gives the impression that the brakes have become better.
Originally, the master cylinder piston was polished Or add shims to achieve the above effect,
This should be the earliest form, and the changed master cylinder is actually the same reason,
Now it’s just turning the conversion into a complete product in mass production, Just replace it.
REPLACEMENT OF MODIFIED VALVE IS ACTUALLY NOT RELIABLE
In fact, these modified valves on the market shorten the response time by increasing the excess air volume, This is actually just that the brakes have become stronger on the subjective consciousness of the owner.
Some car owners even modify their new cars at home and some car owners are after a certain mileage
The braking force is reduced due to the wear of brake components or improper maintenance, At this time, the pump valve of the original car was replaced with a retrofit valve. The brakes are not unilateral, but a whole Must pay attention to coordination, especially the trailer.
We all know that the brakes of the trailer and the main car are coordinated with each other, In order to ensure the braking effect. After replacing the modified valve parts, the coordination of the vehicle's braking is destroyed.
And after the modification, the linear increase in braking force almost disappeared, Some of the car owners said that they would be killed if they stepped on it lightly. It is useless to tread heavily.
Due to the increased air volume due to modified shipping, At this time, the brake air pressure will also drop faster, For some cars with slow inflation, Downhill air pressure may be insufficient, This is also more dangerous and troublesome. Maybe many car owners have had such an experience, After refitting the valve parts, the brake drum is obviously not durable.
Brake drums often break, Sometimes new brake drums just replaced, Before running too many miles, it broke and had to be replaced. At the same time, the braking distance of the vehicle is not shortened but extended. Blind modification is not reliable without finding the reason for the brake deterioration.
WEATHER THE BRAKE IS GOOD OR NOT, MAINTENANCE IS VERY IMPORTANT
In practice, the brakes are not easy to use, Many are caused by incorrect maintenance. For example, using fake and inferior brake pads and brake drums, There are also some people who usually ignore the maintenance of the brake gas path, For example, replace the drying tank at irregular intervals; For brakes, just replace the brake pads, No maintenance of parts such as camshafts, And these are all factors that affect the braking effect and stability.
If you do not fundamentally identify the problem of brake deterioration, and modify the valve, In the short term, you will feel the brakes are better, After more time, These problems will gradually enlarge, Thus putting your brakes into a vicious repair cycle, It doesn’t seem to work whatever you change, Therefore, the correct posture is the correct posture.
The quality of the brakes is directly related to the driving safety of the owner, The modified valve parts seem to enhance the brakes and ensure safety. Whether the brakes are good or bad is more about the usual maintenance, It is not reliable to simply solve the problem by changing a modified valve.
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