Preparing the client’s car to operate in a warm period of time, it is extremely important not only to set the tire season on it, but also check the brake system, which was operated in winter in high load mode.
Watch for seasonality
The so-called «seasonal sentences» as a complex of targeted monitoring and diagnostic measures — one of the most effective marketing tools for a service station, on the one hand, attracting new customers at relatively low costs, and on the other, which is perhaps even more important — Increasing the loyalty of existing ones. These proposals work mainly due to the formation of objective and relevant reasons for additional / extraordinary visits to the station. In addition, they help to expand the average check and make promissory services and spare parts during any visit to a hundred client.
The main thing is to clearly catch the mood and wishes of the potential audience, as well as in advance to prepare the preparation of the appropriate seasonal offer. Now, for example, it’s time to begin to announce your activity on the spring so that customers have the opportunity to carefully read it, to comprehensively think about and make a decision.
In this regard, it is always necessary to remember that the obvious to the specialist things are not always obvious to car owners. The only thing in the context of seasonality, they unconditionally and unequivocally understand — this is a replacement of tires. The need for all other verification works should be able to competently and intelligently justify. It is best to do this, having a certain checklist at hand or better to say the script combined with a check list and allowing the master consultant to communicate with the client, dense it the importance of those or other technological aspects. From this, the justification for checking the state of the brake system is clear and laconic, without unnecessary words — we will begin. And then let’s go through the optimal check-leaf.
After winter, the brake system must be checked anyway. Even if during the winter months the car was not exploited or operated quite a bit (in such a situation, by the way, the need for verification even increases). Why? Because the brake system, like any served system, does not apply to the number of fully sealed systems and includes a range of open components and nodes. So, not only operational loads, but many external impacts and natural phenomena may have the most direct impact on it.
What is important to draw the attention of the client first:
In particular, even a pair of downtime (especially with such high air humidity as in winter) is enough to ensure that the brake discs begin to be covered with rust, and brake calipers are twisted.
The same high humidity contributes to the fact that the hygroscopic brake fluid is especially vigorously accumulating moisture in winter, which leads to the loss of its characteristics and as a result of a significant decrease (often up to full failure) of braking efficiency.
Rusting and overlooking the stripping brake cable («handbraw») due to the fact that many car owners try not to use it in the winter months, leads to problems in the parking brake system.
The use of reagents, regular temperature differences (huge thermodynamic load) and again high humidity lead to rusting the components of the brake line, damage to rubber brake hoses.
And of course, the characteristic of the brake system work itself in an incomparable more aggressive winter medium with the corresponding features of the vehicle management (acceleration-braking-maneuvering) leads to significantly increasing wear as the system as a whole and all its components separately.
The most vulnerable elements of the brake system, in connection
With this, are:
• A pair of executive components: brake disc + brake pads (measurement / assessment of residual thickness — operation is regular and extremely important, so it should be carried out at each visit to the client, without binding to seasonal proposals)
• Brake caliper
• Brake tubes and hoses
• Parking brake components
• main brake cylinder
• ABS and control unit
• Vacuum components
Here is something to check and need to be carried out on the eve of the warm season. At the same time, it will not be superfluous to explain to the client that in the summer the load on the braking system will not decrease as well, but it will be a little different: winter low speeds and, let’s say, the low-power brake exposures will replace the summer more aggressive high-speed modes and more energetic braking requiring from Systems maximum efficiency and efficiency. So that it does not fail at the peak of operational loads — check the system now.
Control and diagnostic measures to assess the working capacity of the brake system are beginning with the traditional visual inspection and organoleptic checks, first of all, make sure that the light and emergency indication is managed. Moreover, the presence of a special braking bench of these actions does not cancel.
With the slightest presses on the brake pedal, two symmetrically located stop signals should be included.
The ABS indicator lamp on the dashboard should light up when the ignition is turned on and immediately after starting the engine to go out (the continuing lamp indicates a malfunction in the anti-lock system).
If the car is equipped with the brake pad wear sensors with the light indication on the dashboard, we look at whether the corresponding signal does not light up.
We check the parking brake is the perfect option when it completely «grasps» on the third-fourth click of the rising lever. If the parking brake weak, pull it out the cable and appreciate the state of the brake pads.
Check the level of the brake fluid in the tank — it must be between the minimum and maximum mark, and the fluid itself must be clean, without extraneous inclusions and sediment.
Put the motor and press the brake pedal several times. It should not be too soft, falling into the floor, and too tough, barely affecting. At the same time, after several clicks, the pedal should become a little tougher. If she did not change its elasticity — check the brake lines on tightness.
Wash the bottom of the car and check the brake lines for rust, damage, leaks. As a rule, the leakage of the brake fluid occurs in the area of calipers or the main brake cylinder, in places of seals and connections. Inspect the parking brake cable cover. Notify the client, which in addition to the diagnosis, the bottom washing has also preventive importance — it eliminates the reagents, salt and road dirt that contribute to the development of corrosion foci with it. It is very desirable to carry out such a sink and subsequent testing at least once a year. And just on the eve of the warm-time year — timely detected surface corrosion is easily removed and therefore does not lead to serious negative consequences. It will be enough to simply process the plot with special means, which will detain the spread of rust.
If there is a deep damage to corrosion, it is very important to replace the tubes as soon as possible, without waiting for the metal bundle. Remember — the entire set of brake lines is changing assembly. Any handicraft «inserts» and «Latania» can not give the result and is fraught with the output of the brake system, even with minimal loads.
Do not forget about rubber brake hoses. Drops of temperature, reagents, high humidity, and so on. Forcing their rapid aging, drainage and cracking, which also leads to loss of tightness and critical failures in the operation of the brake system.
After conducting primary organoleptic check, go to a more detailed study of the state of the brake system. Its effectiveness is best to evaluate on the brake stand, however, and in its absence it is possible to carry out fairly accurate diagnosis.
As experience shows, the car owners do not remember completely that the brake fluid should be changed every 2 years or after 30-40 thousand km of mileage. Therefore, it will never be superfluous in the dialogue with each client additionally remind of the hygroscopicity of the brake fluid and the need for its regular replacement. And those who believe that in the hydraulic circuit there is no way to take place, it should be notified that it absorbs from the external environment through the walls of the hoses. Plus, in an expansion tank through the compensation hole each time, a wet atmospheric air sawmaker occurs.
What happens when the brake fluid is wrapped with moisture? First, the temperature of its boiling is changing, which dramatically reduces the efficiency of braking and often leads to the boiling of fluid during intense and long-lasting braking (the pedal goes into the floor, without causing an adequate response system to pressing). Secondly, the accumulated moisture causes corrosion of the inner surfaces of the metal components of the brake system.
An extraordinary replacement of the brake fluid is necessary in the presence of particles of dirt, black or oil divorces, the appearance of precipitate and smell of gary, tinning.
The brake pedal response to pressing in many cases very well characterizes the state of the system, detecting the presence of a problem.
So, in particular, too soft, «WATTAT» pedal tells us and the need to replace the brake fluid (grabbed over the winter of water), and, which happens most often — disruption of tightness in brake lines, which can be caused by damage or wear components.
The trouble is that in the winter, driving into the snow or moving along the snow-covered road and driving on a snowball, the driver does not know what is inside, which is hidden from his eye. And it can be just a soft, fluffy snowball that does not cause any inconvenience and instantly scattering, and the concentration of hard ice creases that can easily damage the brake pipes.
Therefore, we definitely remind customers about special care driving and inspect the highway.
Another extreme is too tough pedal. It is most likely a vacuum amplifier to blame everything. Or damage to the strongly heated components of the brake system due to sudden sharp cooling due to entry into the puddle or in the snow, that in winter it happens.
Useful information on the state of the brake system can provide the steering response. The necessary information about it can be found from the conversation with the client, asking for possible inconveniences or by conducting an easy road test.
If during braking there is a strong beating of the steering wheel — this is the first sign of blocking brake discs, or, in simple language, the fact that the brake discs «led». It happens again due to sharp hypothermia when, after intensive braking, the car flies into the snow or puddle.
In some cases, the deformation of the brake discs can be eliminated by the gate — when the damage is not very strong. Although it is still better to replace them.
Another reason for the beyon, which is moving into the steering wheel: wear brake pads, brake cylinder defects. Here it is already necessary to deal with more attentive, evaluating the performance of cylinders and the degree of wear of the pads.
In addition to the beating, it is possible to build a car aside. The most common causes of this is a violation of the angles of the installation of wheels, tire wear, tire defects, as well as subdining calipers due to cylinders, deformation of hoses, brake fluid leaks, and so on.
To deal with the causes of the fault, start from checking the brake disc temperature. If one (or more) of them are overheated, and overheated strongly (by taking this test, take security measures to not burn), and the rest is not — the problem is in the brake caliper. If the temperature of all brake discs is about the same and not high, perform diagnostics of the suspension, inspect the tires, check the collapse.
Parking brake system
The parking brake system is quite often out of installation in winter, because it … use very rarely. Such a recommendation — if possible, do not use the parking brake system — give many experts due to the concern that during long standings at negative temperatures, the brake pads can face brake discs.
In principle, this recommendation is fully justified. However, do not forget that other problems exist in addition to sample. Namely oxidation and rusting of the steel cable, leading to the difficulty of its movement inside the casing and damage to individual filaments of the cable: their elongation or opening.
Corrosion of the cable is directly related to the housing and snow covered. She prevents his free go that manifests itself to make an incredible effort to raise the lever — it’s so tightly, it does not move at all. In addition, due to the rusty cable and after lowering the lever, the rear wheels can remain blocked.
To eliminate this malfunction, you will have to replace the cable. And in order to avoid her re-occurrence, you need to carefully check the casing for damage through which moisture and snow can fall inside. And the latter is fundamentally important. Otherwise, the replacement of the cable is deprived of any meaning — after the next winter he again rusts.
This is the list of the most relevant activities to test the brake system on the eve of the warm season. Of course, not all possible monitoring and diagnostic operations entered it, but only the most necessary. If you wish, this list can be supplemented, but we would not recommend to inflate it too much so that the car owner does not suspect a hundred in the desire by any means to pull out as much money as possible. The value of any proposal and seasonal including — in balancedness, which, on the one hand, causes the trust and loyalty of the client, and on the other, it allows you to accurately accurately assess the state of the claimed nodes, aggregates and systems.