Despite the fact that Bukhanka is a fairly old car that has been on the market for several decades, starting in the 60s of the last century, the car still has many components. Moreover, each system requires appropriate care, timely maintenance and repair as necessary. Among the important components whose role becomes most noticeable in winter is the heater. It cannot be said that the stove on Bukhanka is somehow modern or highly efficient. Many complain about its low level of effectiveness. Moreover, this applies to the rear and front stoves to the same extent. Therefore, equipment is changed quite often. But it would not be amiss to study the structure and design of the Bukhanka oven equipment, as well as study the connection diagram of the electrical component, since the installation itself does not cause much difficulty.
Design of the UAZ Bukhanka stove.
The design of the UAZ Bukhanka engine cooling system
UAZ “Bukhanka” is a real all-wheel drive SUV that can go where other SUVs cannot.
This UAZ model has been produced since 1957. This car is used as special equipment in enterprises, as well as by ordinary people for fishing or hunting trips. UAZ “Bukhanka” accommodates up to 10 people
This car is valued for its cross-country ability and maintainability, the prices for spare parts for it are affordable for most owners, and repairs can be carried out independently. Two engines ZMZ-402 and ZMZ-409 were installed on the Bukhanka; if you want to repair the Bukhanka yourself, then you will be interested in the design of the UAZ Bukhanka engine cooling system.
Description
Interior heater UAZ 39094 (door 4091 injector) “UAZ” / # 390945-8110010
- article # 390945-8110010;
- available to order;
- check price and delivery time;
- there are analogues in stock (check);
- Delivery is carried out throughout Russia.
Find out the availability, price and delivery time of this product by calling 8 800 700-9-554 or through the feedback form. If necessary, our specialists will select for you similar products available in stock.
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General device
These cargo-passenger cars with carriage layout use closed-type liquid cooling. The coolant circulates in the system forcibly under the influence of a centrifugal pump. The manufacturer recommends using domestic Tosol as coolant. However, in emergency cases, you can fill the cooling system of the UAZ “Loaf” with ordinary water. The volume, including not only the cooling system circuits, but also the heater, on most models ranges from 13.2 to 15.3 liters.
Rear heater malfunctions
If the heater fails, buy a UAZ rear interior heater for replacement. To avoid difficulties when installing it, you should choose a model for the series and year of manufacture of the SUV. The repair is simple: just drain the coolant, disconnect the power supply and replace the heater according to the instructions.
Signs of a broken rear heater:
- antifreeze or antifreeze leak;
- the fan does not work;
- The radiator does not heat.
After diagnosis, the technician can carry out repairs or replacement. Order a rear interior heater for the UAZ “Patriot”, the purchase can be completed in a couple of clicks. Also in the catalog you can select heating for other series of machines. The store manager will answer all your questions.
Cooling system diagram for ZMZ-402
It's quite simple. This power unit is cooled by liquid that passes through two circuits.
The system is built according to a ring scheme and consists of several main components. The liquid moves from the radiator through the pipes to the thermostat, then passes through the engine cooling jacket. Then, through the water pump, it returns to the radiator. In addition, the cooling system of the UAZ “Loaf” with a 402 engine includes an electric fan, a temperature sensor, and heaters. Let's look at each element separately.
Features of electrical equipment
So, what features does the UAZ 452 electrical wiring diagram have? At the time of the start of production, the most difficult moment for the engineers and designers of the enterprise was the search for the highest quality elements and components.
In particular, we are talking about parts for the vehicle lighting system, as well as ignition, which is especially clearly seen in how the car’s cabin is filled:
- control elements for various transport systems;
- control devices for monitoring the condition of components and mechanisms.
External optics
At that time, designers had to resort to many freelance solutions in order to establish mass production of cars.
- The UAZ electrical circuit includes an optics switch, which was borrowed from the GAZ 69. By the way, the latter is the predecessor of the Bukhanka.
- In addition, almost all the optics were borrowed from the GAZ 64 - these are lights, etc.
Thermostat
This is the most delicate component in the system. It fails most often - modern spare parts are not of very high quality. The function of the thermostat is to control the flow of coolant through the engine. The ZMZ-402 unit, like many others, has two coolant circulation circles - large and, accordingly, small.
When the driver starts the engine and it warms up a little, the liquid in the cooling system of the UAZ “Loaf” circulates only in a small circle. This allows the engine to warm up faster. When the temperature reaches approximately 70 degrees, the thermostat will work and coolant will flow through the cooling radiator in a large circle. Operating temperatures for the 402 engine range from 82 to 90 degrees. If the engine does not warm up to these temperatures, this indicates that the thermostat is faulty. Often, due to wear, it jams and does not open.
water pump
The water pump on the UAZ Bukhanka car is mechanically driven, centrifugal type. The purpose of the device is to force antifreeze to move through the pipes and voids of the engine. The pump transports the fluid flow to the radiator, where the substance is cooled and back to the cylinders. Malfunctions in the pump will lead to overheating of the motor and serious damage, so the unit requires maintenance. The pump elements are as follows: aluminum frame, impeller, seal. The impeller, rotating, creates a centrifugal force that throws the liquid towards the walls of the frame. The job of the seal is to contain the coolant and prevent leakage at the joint.
Pump for UAZ-409:
Radiator and cooling fan
When the liquid in the cooling system of the UAZ “Loaf” passes through the engine, it will heat up. It must cool down to cool. A radiator is used for this. On these cars, the manufacturer installs mainly copper 3-row radiators. However, owners prefer to install aluminum solutions instead. As reviews note, with them the engine is cooled much more efficiently.
The radiator in the system acts as a cooler. It is cooled by the oncoming air flow when moving. When the car is stationary or moving at low speeds, the air flow is weak and cannot sufficiently blow over the radiator. Then the fan comes into play. In this car it is of a forced type. The element rotates when the engine is running, regardless of the coolant temperature. Thus, it is very difficult to overheat the engine.
Signs of airing
If it is difficult to start the internal combustion engine, an experienced driver also checks the exhaust. If fuel gets into the engine cylinders, then even in the absence of a full start, smoke should come out of the muffler. It doesn’t matter what color it will be, the main thing is that it should be there, even if it’s barely noticeable.
Thus, if no smoke comes out of the muffler, this is the first sign of airing in the vehicle (fuel system). Fuel is not entering the engine, which means there is air in the system.
There are, of course, cases when smoke comes out, but fuel does not enter the cylinders. The exception is explained by the fact that the smoke that remains in the system comes out. To insure against such a situation (although it occurs rarely, it is possible), it is recommended to keep the starter longer - about a minute without a break. This time is quite enough to fill the exhaust system with smoke.
If air gets into the vehicle, then some peculiarities arise in the operation of the car. For example, problems with startup may appear constantly, for several days, or may not appear for a long time. Of course, this directly depends on the strength of air suction.
Here's what else happens:
- after starting, the engine trembles, shakes, the entire operation of the engine can be assessed as extremely unstable;
- the engine starts well “when cold”, but as soon as it warms up a little, failures begin, right up to a stop;
- the engine does not start at all (this happens in neglected conditions, when air is already sucked in in large quantities).
Cooling jacket and pipes
To connect various components of the cooling system of the 402nd engine of the UAZ “Loaf”, pipes are used. These are rubber products in the form of tubes. The elements are quite reliable, but if they are used for a long enough time, they wear out and become old. Then the coolant may leak and its level drops. As a result, the motor overheats.
The cooling jacket is a necessary part, without which the engine simply will not cool down. The jacket passes through the entire cylinder block. It acts as a heat absorber. The coolant is then discharged to the radiator.
Heat meter
Temperature meter UAZ Bukhanka, a part that displays information about the degree of heating on the instrument panel. Since forced ventilation of the radiator is installed on the motors used, the sensor does not control the switching on of the product.
If the motor has been rebuilt and an electric fan has been installed, the temperature sensor reads information about the temperature conditions. Afterwards, the information is transmitted to the control unit, which analyzes and regulates the degree of heating. The meter is installed on the engine thermostat; product malfunctions lead to overheating of the unit and breakdown.
Heating degree meter, motor ZMZ-406:
Engine ZMZ-409
This engine is distinguished by a different valve cover, an improved timing mechanism, and a different cylinder head gasket. The volume of the power unit also increased, which immediately entailed the modernization of the cooling system of the ZMZ-409 UAZ “Loaves”.
The design of the cooling system is typical for internal combustion engines of this design that were ever manufactured at the Zavolzhsky plant. The engine is equipped with a liquid closed forced system. There is also a radiator, a jacket in the cylinder block and in the cylinder head, a pump, an expansion tank, temperature sensors, an electric fan, a heater core and other elements. Note that the operating principle of the cooling system of the 409 UAZ “Loaf” is simple and similar to injection engines. Here the coolant also moves in a large circle and in a small one.
how to connect the stove. Grade:
#1 TEMA
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Can I connect one pipe to the heater radiator from the tank (as an input) and the other from the pump (as an output). Exactly. And one more thing, where on the heater radiator is the inlet and where is the outlet? There isn't much difference.
And one more thing: if the partition between the heater radiator pipes is rotten, then the stove won’t heat up anyway!
Post edited by BOBA: September 29, 2008 - 08:40
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