In order for your sink to serve you much longer without breakdowns, we advise you to adhere to the following operating rules:
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Today on the market of goods for car maintenance there is a wide selection of pressure washers, which differ in their functionality, quality and, of course, cost. Of the variety of manufacturers of such devices, the following, in our opinion, are the most worthy and high-quality ones:
"Champion" - is distinguished by its reliability and ease of use;
"Karcher" - a high-quality and reliable device, a wonderful and well-organized service anywhere in large cities;
"Calm" - compact and reliable sinks;
"Hooter" is a universal high pressure washer that can be successfully used not only for cars, but also for household work;
Interskol - the unit shows good performance and affordability.
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Do-it-yourself crimping of the high-pressure hose of a sink without special crimping tools. (well, almost without 🙂)
Look at the collar of lawyer egorov
but did not try to squeeze with a simple clamp
Thanks for the advice - the clamp turned out to be a very interesting thing. I would have tried them, but I simply did not know about the existence of such a device. I am thinking of doing one now - it looks like it will be a very good help. Thanks!
No, I haven't tried it. Simple clamps, twisting even in two, fly off literally after 10 minutes of work, wire puffs (I hung them a few and tightened in a row) a little longer. This method made it possible to use a really thick nail as a crimp - it works without problems. (squeezed very hard and holds very well)
= Repair of high pressure hoses =
Video Do it yourself Repair of high pressure hoses of the Petr Zhurba channel
Karcher washing equipment is popular in the responsible market. Such devices are widely used for domestic purposes. Cleaning walls, doors of houses, garden paths, washing cars, windows, workshops and garages - the strong pressure of water supplied by the car can effectively cope with the removal of dirt and dust. Regular use of the sink leads to wear and tear on the structural elements.
Often, equipment owners are faced with the need to repair or replace the Karcher high-pressure hose (RVD). After studying the instructions below in detail, you can easily troubleshoot yourself. In order to save time and effort, you can turn to professionals for help. Its services are offered by the company "Lenhydravlika", which is located at the address: St. Petersburg, st. Chugunnaya, 20. Specialists in the shortest possible time will carry out the whole range of works.
The Karcher high-pressure hose is one of the basic elements of the hydraulic system of washing equipment. The flexible pipeline is designed to supply water under pressure from the built-in pump to the nozzle of the device. In order for the hoses to easily withstand a significant load, reliable, wear-resistant materials are used for their production. The design of the RVD consists of two layers of polymer - it can be either rubber or synthetic rubber. There is a metal braid between the inner and outer parts of the pipeline, which gives the product additional strength. The wire winding technique is of two types, which became the basis for the classification of pressure hoses:
- Braiding. The braid is applied at an angle, each next layer is crossed with the turns of the previous one. Such high pressure hoses are designed for a significant level of pressure.
- Coiling. Layers of wire in even rows. In terms of endurance, high pressure hoses of this type are inferior to the previous type of high pressure hose.
The market offers a wide range of hoses, differing in rubber thickness, number of braiding layers, diameter, length and permissible load - the parameters depend on the area of application of the product. When choosing high-pressure pipes for Karcher, you should follow the manufacturer's recommendations.
Malfunctions of Karcher high-pressure washers are often associated with damage to the flexible pipe. The hose wears out, wipes, cracks form on it - as a result, a leak occurs. It should be understood that when exposed to significant pressure, the risk of tubing deterioration increases. Another common malfunction is a violation of the integrity of fittings in Karcher sinks. Fasteners lose their tightness or corrode. The causes of damage to the RVD are of the following types:
- Manufacturing defects. The use of outdated equipment, non-compliance with technologies, lack of product quality control are the main reasons why there are sleeves with various defects on sale.
- Inconsistency of parameters. An incorrectly sized high pressure hose will quickly fail.
- Intensive use. With prolonged use, under the influence of a constant pressure of the liquid, the hose loses its initial properties.
The service life of the hose depends both on the quality of the pipeline itself and on the reliability of the fasteners. If you notice a fluid leak or a malfunctioning washer, you should clearly identify the place where the fitting or hose is damaged. If you have problems at the diagnostic stage, contact the professionals.The experts of the Lenhydravlika company will be happy to assist in troubleshooting Karcher washing equipment.
It is not difficult to qualitatively repair the hose, ensuring the stable and long-term operation of the sink, the main thing is to follow the recommendations exactly, to perform all actions carefully and carefully. Regardless of the nature of the damage, the RVD should be removed initially. The hoses are attached to the equipment with threads or quick couplings, depending on the machine model.
Further actions are as follows:
1. After dismantling the tube, cut off the damaged part to the point where there is no deformation.
2. If the sleeve is damaged at the end or the fastener breaks, select a similar fitting and crimp it with a vise.
3. When a cut has formed along the length of the hose, a connector of a given diameter is used for repair, as well as two clamps. They help to seal the sleeve joints. Similar work is carried out if necessary to lengthen the tube or connect two hoses.
What if the cracks run along the entire sleeve? In such a situation, it is rational to purchase and install a new tube. The Lenhydravlika company, a domestic manufacturer of high pressure hoses and end fittings for Karcher washing equipment, will offer a quality alternative. Our specialists know exactly how to repair a hose or find a worthy replacement for it. Clients expect affordable prices for work, prompt execution of orders, a responsible approach to solving tasks.
Karcher high pressure hose repair. Karcher high pressure hose repair: how to do it yourself Repair of high pressure hoses - means pressing a broken high-pressure hose at the ends (pressing in a new end fitting), pressing the hose at a rupture approximately “in the middle” - inserting a special repair fitting and then pressing it in, pressing the fitting for the required high-pressure apparatus.
Our service center for high pressure hoses also offers you such services as:
pressing high pressure hoses of the required length (from 1 meter or more)
pressing with the required fitting (for example: М22х1.5 nut; 3/8 ″ nut or union; 1/2 ″ nut or union; 1/4 ″ nut or union - check the availability of the required fitting)
production of a high-pressure hose for the most popular high-pressure washers: Karcher (Karcher) with a fitting 8 mm (new mount for Karcher mini-washers since 2008), 10 mm, 11 mm and a union nut M22x1.5
pressing the high pressure hose for connecting the ceiling consoles (rods) both from the apparatus to the console, and the hose from the console to the high pressure gun
production of hoses for drawing high pressure through the washing box (car wash)
Please note that we can offer you a replacement for the original plastic hose (as a rule, household mini-washers are completed) with a more durable and professional high-pressure hose. If you just want to repair the old hose - contact us. Also, our hoses are made or repaired from various high pressure washers: in addition to Karcher, also Kranzle, Portotecnica, Faip, Bosch, Lavor, IPC, Poseidon, WAP, Alto, etc.
If you have a household high-pressure apparatus that needs to be repaired, and we do not have the required fitting (household car washes), we offer the following repair option: we PRESS your original high-pressure hose, that is, we remove the tips from the original hose, and then press it into a new high-pressure hose of the required length, the cost of such a repair service varies depending on the complexity of the hose.
Popular with private house owners. With this compact device, you can clean virtually any surface from dirt. In addition, the use of a mini-washer allows you to reduce water consumption. Therefore, such devices are often used in car washes and cleaning enterprises.
It is quite logical that continuous operation of the mini-washer can lead to equipment failure. The most common problem is the breakage of the high pressure hose that supplies the water under pressure. Some common problems are discussed below.
Diagnostics, maintenance (MOT), minor repairs are 2-3 days.
Bulkhead repair - 30 days.
Departure for diagnostics, maintenance and minor repairs or equipment collection is possible. The cost is calculated based on the amount of work and distance.
Quite often, the cause of hose breakage lies in damage to the flange, that is, the fastener that connects the hose to the mini-sink. In this case, it is necessary to purchase a flange that matches its parameters and install it in the base of the hose. The installation procedure may require the use of pliers and a hammer to adjust the fastener to the diameter of the hose.
Karcher hoses are often subjected to mechanical stress, which leads to the appearance of holes, tears and cuts in them. It would seem that in any other case, an overlay glued at the place where the gap appears would be an ideal solution to this problem.
However, the pressure inside such a hose is so great that no adhesive will be able to hold the patch. The ideal option in this case is to replace this part. If, for one reason or another, the spare hose cannot be obtained, you can resort to using clamps and a connector.
A connector is an elongated metal one-piece piece that is attached where the break occurs. To hold it, clamps are used that "tighten" the connector, preventing it from moving.
Due to intensive use, the service life of high-pressure hoses on automatic car washes is short. They can be attributed to the number of car wash consumables that need fairly frequent repair or replacement. At the same time, high pressure hoses are an important part of the smooth running of your sinks.
We carry out all types of work on the repair of high pressure hoses (repair connections, replacement of worn fittings) on site (directly at the sink) or we replace them when repair is no longer possible. We carry out all types of work as soon as possible in order to minimize downtime. If the repair is not possible in the shortest possible time, we will replace the hose of any length and diameter. We provide prompt delivery and installation of Karcher brand high-pressure hoses. Their distinctive features:
increased safety margin against corrosion of hose fittings; abrasion resistance. Karcher is the world's leading manufacturer of car wash equipment.The operating temperature range for high-pressure hoses manufactured by "Karcher" is from - 40 to +130 degrees Celsius. All products of the brand for the equipment of sinks are guaranteed to justify their price.
For optimal use of the working area of the car wash, the length of the Karcher high-pressure hose ranges from 10 to 30 meters or more.
The costs of any contingency situation can be reduced by being prepared for it in advance and entrusting its solution to professionals. During the operation of the sink, contacts of trusted specialists are required to carry out operational repairs. This will be the key to its flawless functioning and a guarantee of quality for customers.
High-pressure hoses, more often called high-pressure hoses (HPH), are designed to create or absorb a working force that is transmitted under high pressure by liquids or gases pumped into them.
The main area of application of high pressure hoses is hydraulic and pneumatic systems of various devices and mechanisms. Outside of industrial production, the owners of vehicles most often deal with RVD, these are power steering hoses (GUR), and those who use high-pressure pumps, for example, the most common Karcher brand in our country.
The design of the RVD is due to the need to withstand internal pressure, which can reach several hundred atmospheres.
In addition, the inner surface of the high-pressure hose must be insensitive to the influences of the transported medium. Therefore, its lower layer is made of oil-resistant rubber or synthetic rubber.
For the manufacture of the upper, thicker layer of the high-pressure hose, wear-resistant rubber is used, which, if necessary, is supplemented with thermal protection in the form of a corrugated coating, metal or polymer.
Between the upper and lower layers of rubber, a metal wire is wound in several layers, due to which the hose receives the required rigidity and strength. Wire layers are interspersed with thin rubber films.
There are two types of high pressure hoses, depending on the way the wire is wound:
Coiling. In the production of this type of hose, the wire turns are wound in even rows.
Braiding. In this case, the turns are wound at an angle to the axis of the hose so that the turns of the previous layer intersect with the turns of the next layer of wire. Braided hoses are more durable and able to withstand more pressure than coiled hoses.
In addition to wire, textiles can act as an internal rigid frame.
The number of wire layers and the thickness of the rubber layers are set by standards that determine the field of application of a particular type of hose.
To fix the hoses in place, fittings (tips) are mounted at their ends, which are of the following types:
Fastening of fittings to the ends of the hose is carried out using crimp couplings, which are crimped on special machines.
Depending on the type of shank, fittings are classified by series:
Universal. This series can be used in all hoses of high pressure hoses, except for hoses of the winding type.
Interlock. The series is used for winding sleeves.
When installing this type of fitting, it is imperative to remove both layers of rubber, inner and outer.
High pressure hose fittings
The operation to remove layers of rubber is called hose debarking.
Cs. Fittings of this series also crimp winding sleeves, but it is no longer necessary to remove the rubber of the upper and lower layers.
Failure of fittings is the most common case of damage to high pressure hoses. This is due to the magnitude and intensity of the loads they experience.
The causes of damage can be divided into the following types:
Manufacturing defects.Most often, this is a poor-quality crimping of the joint of a fitting with a hose, due to the use of artisanal or unfinished equipment.
Damage sustained during the operation of the main mechanism. They appear as cuts and ruptures in the hose. The most common cause is sagging of the hose due to the wrong length.
Damage caused by the inadequacy of the parameters of the high pressure hose to the operating conditions. This could be a hose rupture or a break in a fitting, because of this, the pressure was higher than that for which the hose was designed.
In the same series, damage to the outer layer of the RVD should be mentioned when it is used in a different temperature regime for which it is designed.
Important! In order to maximally protect against possible damage to the high pressure hoses, when choosing them, it is necessary to carefully check the compliance of their characteristics and parameters with the operating conditions.
High pressure hoses with fittings
First of all, we are talking about the calculated value of the maximum allowable pressure, temperature and the minimum bending radius of the hose.
Corrosion on fittings.
Broken sleeves.
Abrasion and deterioration of the upper layer of the hose.
Clogged sleeve.
Violation of the tightness of the fitting connection.
Fitting stripping from the hose.
Leaking fitting connection.
Thermal damage to the inner rubber layer.
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From the foregoing, it can be concluded that the repair of the high pressure hose consists either in replacing the damaged section or in replacing the fittings that have become unusable.
When replacing a damaged area, as well as when replacing fittings, it will be necessary to crimp the couplings, that is, technologically these two actions are very similar.
The sequence of operations in this case looks like this:
The damaged sleeve is detached from the main mechanism.
The cutting machine cuts a new sleeve according to the size of the old one. Moreover, for measurement, the distance between the ends of the nipples at its ends is taken. It is better to choose a high pressure hose designed for a higher pressure than that for which the old high pressure hose was designed.
The marking on the sleeves will help to choose the required diameter.
The factory marking DN indicates the inner bore diameter of the hose.
If a hose designed for increased pressure (heavy hose) is to be repaired, its ends are cleaned from the inside and outside to a metal braid. This operation is performed on debarkers.
Then the necessary fittings are selected. This can be tricky, since imported fittings are manufactured according to different standards.
After debarking and selection of fittings, they are crimped on crimping machines. Removable crimping jaws are available for each diameter.
Further, the quality of the crimping is checked. For this, a control probe is used, but it is best to test on a special test bench.
If a non-standard connection is found, then the repair is carried out using a repair fitting. For this, the head of the old fitting is taken, to which the part to be pressed is soldered.
This method is often used by motorists for emergency repair of power steering hoses, as well as owners of Kircher pumps and mini-washers.
The most common cause of damage to the power steering hoses is that when the steering wheel rotates, there is a serious force due to friction. This force causes deformation of the elastic element, which changes the size of the holes in the distribution mechanism, which regulates the pressure drop in the hydraulic cylinder.
As a result, the power steering sleeve connected to the restrictive valve wears out. This power steering hose is designed for pressure, depending on the car brand, from 70 to 130 kgf / cm2.
With such a high pressure, repairing a damaged power steering hose with clamps or wire is almost impossible.
There are two options left: either replace the entire power steering tube, or replace only the damaged part of it by rearranging the fittings to a new hose.
Moreover, it is better to rearrange the fittings in a special workshop.
Replacing and installing the power steering hose is performed as follows:
The front of the vehicle is jacked up.
The steering wheel is turned all the way to the left.
A syringe with a tube attached to a needle is pumped out of the hydraulic booster reservoir.
After that, the hose is disconnected, the working holes of the hydraulic system are closed with plugs.
Power steering hoses
The selection of a new hose is made with exact observance of the diameter, otherwise the working qualities of the hydraulic booster may change.
Then a new hose is installed, fluid is filled into the hydraulic system and the quality of the installation is checked.
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People with professional skills are able to repair the hose for the hydraulic systems of a car or a Karcher pump manually using the simplest equipment and devices. But the quality of such repairs will remain in doubt, which is highly undesirable.
It must be understood that high pressure creates an area of increased risk, when a breakdown or abnormal operation of the high pressure hose can lead to serious consequences. Especially when it comes not to the Karcher pump, but to the hydraulic systems of heavy equipment. A far from complete list of such consequences looks like this:
Shooting of fittings and dangerous burst of torn hoses;
Fire or explosion of working fluid;
Loss of vehicle control;
Poisoning and burns from fluid spilled from the hoses.
To avoid this and ensure long-term and high-quality operation of the repaired pipeline, strict adherence to instructions, attentiveness and accuracy during installation work, as well as contacting specialists, if necessary, will help.
VIDEO
Do-it-yourself "Karcher" repair. Do-it-yourself repair of a high-pressure hose, high-pressure car washes, mini-washers, foam nozzle, Karcher pump Regular use of the pressure washer requires high-quality service of the device in the service center. In order to save money, many users make repairs to "Karcher" with their own hands. It is not recommended to carry out self-cleaning and replacement of parts before the end of the warranty period, which will affect the refusal of further service.
For trouble-free operation of the device, regular replacement of the oil, seals and the cuff on the pump (high pressure pump) is required. In case of interruptions in water pressure or improper storage / use of the device, an urgent DIY repair of the "Karcher" may be required. What parts are failing?
Pump, motor and pressure sensor.
Electrical part.
Nozzle, hose and gun.
The choice of household mini-washers eliminates the emergence of difficulties in care, but different models have their own characteristics, which must be found out from the seller in advance. For example, a car wash nozzle with a lamellar structure will provide high-quality operation with regular cleaning with a toothpick. Otherwise, the ingress of small particles will cause the unit to stop working.
When purchasing a product, you should check the availability of the nearest service centers and the warranty period. If such questions are ignored, the breakdown of the machine will lead to unnecessary problems. If you decide to carry out the repair of "Karcher" with your own hands, the right step is to study the instructions in detail.
According to the manufacturer and car wash workers, the main causes of device breakdown are poor water quality and lack of service. To increase the service life of the unit, it is required to comply with the basic requirements:
Install a filtering device for coarse and fine water purification at the inlet to the AED.
Check the flow of the required volume of liquid in accordance with the technical parameters of the device. For example, if the flow rate is 15 l / min, and the water supply system allows you to get 13 l, after 2 months you may need to immediately repair the "Karcher" with your own hands (or in a service center).
Water piping should be 3/4 in. Per unit.
Factory nozzles and accessories are subject to self-replacement.
Video (click to play).
With regular preventive maintenance, it is possible to exclude the occurrence of unforeseen circumstances that will entail the replacement of expensive parts.
Check the condition and regularly change the oil in the pump plunger drive device. According to the manufacturer, the first oil change should be carried out after 50 hours of using the device, the subsequent service - after 350-550 hours. With an average flow rate of the washing area, it is sufficient to carry out the treatment once every 3 months.
Monitoring the condition of the pump for a good fluid flow, external application of oil, as well as minor repairs of the Karcher car wash with your own hands (changing filters, tightening the bolts) will extend the life of the device.
For AHU with heating, boiler prophylaxis is mandatory - cleaning the fuel filter (removing scale on the inner walls of the heat exchanger and external deposits).
Repair is required if there is a decrease in pump performance and a decrease in operating pressure. This is caused by fluid leaking from the plunger seals. The oil seals are worn out naturally or when exposed to abrasive elements. Under high pressure, small scratches will affect fluid seepage.
The first signal of a malfunction is a small puddle formed in the place where the hose runs. To resolve the issue, you can make a simple but painstaking repair of the Karcher car wash with your own hands. It is enough to change the oil seals (seals). It will be more difficult to install a new actuator, housing elements, seals, etc.
The suction channel is formed by housing elements that place a flat filter between them. The efficiency of the device depends on its state. The formation of defects in the adhesion of the surfaces of body parts leads to a decrease in the main characteristics of the device. With a low suction power while working with a hose and nozzles, repairing a Karcher high pressure washer with your own hands requires the preparation of a soft material to clean all surfaces and edges of the body parts. Damaged elements must be replaced.
If the device is equipped with the Total Stop system (shutdown of the pumping system in the absence of pressure on the trigger of the gun), leaks will lead to inadvertent activation - the automatic device perceives the pressure drop as a "start" command, the device rattles.
The decrease in performance or the shutdown of the AED is affected by the wear of the bypass or bypass valve, the rubber seal (ring) of the pressure sensor and the failure of the hose. This is accompanied by a low level of gun pressure, a decrease in the density and washing characteristics of the jet.
If the device does not maintain the specified pressure level, the pump is intermittently operating and the water is supplied in fragments, repairing the Karcher high pressure washer with your own hands will not be particularly difficult. It is enough to unscrew the bolts with a screwdriver and remove the housing, take out the motor with the pump and separate the motor from it. The pump must be directed upwards or oil will leak from the piston drive.
The valves are removed from the piston (the use of sharp objects is excluded, which can damage the surface), the pump is disassembled into 2 parts. The valves are removed again.
This is how the reason for the failure of the device is found out. This could be scale build-up or blockage. All parts inside the pump are cleaned and wiped with felt. Then the structure is assembled in reverse order.
Do-it-yourself repair of a high-pressure "Karcher" hose consists in crimping the damaged element at the ends or along the entire length. If the sleeve is torn off the flange, the unusable part should be cut straight to the area where there are no deformations. The required flange is selected and placed on the hose. The first one needs to be inserted into the second and squeezed in a vice. Hammer blows are applied from above.
If a cut is formed along the length of the sleeve, the same work is done. The hose is cut and removed to an intact area. A connector of a given diameter and two clamps are inserted. They are put on the hose, a connector is inserted, and tightly crimped with clamps. If cracks form along the entire length of the sleeve, repairing the Karcher high-pressure hose with your own hands is impossible. A complete replacement of the product is required - it is better to entrust this to the masters of the service center.
If the foam nozzle stops producing thick foam, is used for a long time or is not rinsed with clean water after use, the roller mesh becomes clogged with dried "chemistry".
To clean the foam tablet, a number of operations must be performed:
Detach the tank from the foam lance main unit.
The arrow marks the location of the pin holding the plastic tablet tip to the brass element. The pin should be knocked out. If you decide to repair the Karcher foam nozzle with your own hands, you can use an awl or a thin screwdriver.
After removing the plastic tip, you will see two petals forming a foam spray angle. The tip with them must be unscrewed.
In the inner part of the removed nozzle, steel threads will be visible, taking a rounded shape (in the form of a tablet). They should be removed with an awl. Cleaning of the hardened “chemistry” in the nozzle is carried out using a needle.
The assembly of the product is carried out in the reverse order.
Do-it-yourself repair of the "Karcher" nozzle correctly makes it possible to extend the life of the device and reduce the cost of its maintenance.
