UMZ-421, engine: specifications

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2018-03-21 00:05:13

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The Engine UMZ-421 has a rich history. There are several modifications of the specified device. They are actively installed on the machines of the series UAZ. Amplifiers they use vacuum type. If you believe the experts, the devices have a high step. The tensioners are capable of withstanding heavy loads. To understand in detail the motor, it is recommended to consider its performance.

421 engine specifications

General device settings

Model 421 (engine) has the following characteristics: four cylinders, the diameter of the rings 100 mm. the degree of compression is at the level of 8.2. At a frequency of 4000 rpm, the device emits a power of 82.4 kW. Maximum torque is 221 KS on the meter. The maximum frequency reaches 2500 revs per minute. Specific fuel consumption depends on the type of modification.

Motor unit

Model 421 (motor) includes cylinder block, carburetor and pump. Additionally used the damper device. The actuator is matched with the fan. In the lower part of a modification of the fitting. Additionally it is worth noting that the model set pass valve. Shaft of the engine is used with a diameter of 2.4 cm mounting channel is connected to the hose. The fixing block is positioned at the top of the device. Under the carb is the filter. The tensioner applies the modifications to the tank. engine 421

Fill mechanism

Fill mechanism on model 421 (engine) is installed in the side of the device. The recirculation valve it is designed for high pressure. Exhaust gases exit through the opening. To avoid wear of the unit is used pad. The lower pulley device is protected from gases. Exhaust oil has a hose. The filter in this case is absent.

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421 engine Gazelle

Nipple Department

Nipple division of the engine is located under the Central drive. It has two shafts which are connected through the disc. The valve device applies low pressure. The output tube is under the carb. For partition is used stand. If we consider the engine UAZ-421, he has Carter used it with the hose. Only the mechanism has three filters.

Fixing tank is carried out with clamps. If we consider the bottom part of the modifications, there are small holes. The upper pulley is fixed in the device under the clip. At the front of the engine installed lining. If we consider the upper part of the device, there is the air filter. Under it there is a block connector. The pulley on the motor 421 ("Gazelle") is installed under the tank. It should also be noted that in the model there is a hose inlet that is required to cool the system.

engine injector 421

Starter motor

The Starter on the engine UMZ-421 is installed with a closing mechanism. He only has three blocks. Experts say that the model is able to operate at lower speeds. For circuit contactor is used. To the starter the device are fed three conductor.

Cooler device

The Radiator of the model is associated with the starter. Connector on model 421 (engine) is put under the block. The pulley in this case is applied at 3 mm. From one extender moves hose. If we consider the upper part, it is necessary to mention the existence of conductive channels for the exhaust gases. There are special clamps that are attached to nuts. In order to disconnect used the keys. The shaft need to fix. After disconnecting the pump will be able to see the starter.

Modification 421.10

The Specified modification 421 (engine) has the following characteristics: maximum torque of 221 KS on the meter, the average frequency reaches 2500 revs per minute. It is produced with an elongated pin. It has the carb with the drive. Directly the valve is used with the tensioner.

It should Also be noted that the device is wide exit. Considering the engine UAZ-421, you can see that he has a tensioner is used with a pipe. Channels are manufactured overlays. Special attention in the modification deserves a modified starter. The filter in this case is located in front of the damper. If we talk about the shortcomings, it should be noted that the hoses from the carb often fly. Additionally can trap problems with the connector. In this case, it is fixed under the drive. Fan the model is able to operate at high speed for a long time.

The Engine 4215.10

A modification of 421 (the engine) is done with vent Carter. The drive is applied to two outputs. If we talk about the benefits of modification, it is important to note that it can withstand large overload. The oil pump used is of high quality, and a drain tube rarely needs cleaning. Also, experts indicate good conductivity of the channels. The soot on them is very rarely observed. The carb standard is used with the stand. Also worth mentioning that the connector is installed in the lower part of the engine.

engine repair 421

Modification 4218.10 engine

Presents the 421 engine (injector) with durable seals. The cylinders in this case are on the sides. If we consider the advantages of a model, noteworthy are the long channels. Block under the oil in the device is well protected. Experts point to a wide neck modification. The radiator used with additional racks. The air filter is fixed at the Desk. All models have three scifi.

It should Also be noted that the fan is able to maintain a high momentum. The pump is used with the connector. The tensioner is installed at the bottom of the engine near the lever. The actuator is fixed on the nut. In order to make repairs to the device will have to first remove the radiator. After this will only fix the upper pulley and rotate clockwise the bolt. The dilator is removed from the engine using the key. Trim cover selected small thickness.

engine UMZ 421

Repair starter

The Starter of this modification fails, usually because of the disconnect contacts. In order to test them, removed the block connector with a key. The next step is inspected, the surface of the tank. If there is visible oil leakage, it is necessary to detect broken hose. Also the problem can be the shift reservoir. The nozzle is closed.

Supply is inspected last. To disconnect the starter, you need to prepare a Phillips head screwdriver. Fitting in this case do not need to touch. Unscrew the hoses, you can use a screwdriver. The first fasteners, the starter is near the extender. The hoses in this case you cannot touch. After removing the bolts will only remove the starter. This can be done independently without assistance of others. To test the contactor, Unscrew the protective cover. If the clamping plates are loose wires, they need to pressurize. This can be done manually.

engine UAZ 421

Replacement pads for the connector

Replace the cover plate on the connector is quite simple. When there is a leak in the first place it is necessary to flush the engine. After that, it is important to ensure that the problem lies in the connector. Further, to make the repair 421 engine, you must proceed directly to the inspection details. It will have to twist the upper pulley. The next step is inspected, the tank device. Cover the model is removed with a key.

The Bolts at the engine are around. It should be noted that the cover must be lifted very carefully. Trim should not fall through to the filter. It should also be noted that you have to hold the tank. Trim should be clean and supple. If you can see the Browning, so it will have to be replaced. After the operation the lid is placed on its original place. The fasteners are wound gradually. In this case, it is necessary to continuously monitor the position of the cover. If it is tightened incorrectly, so the cover must again be removed.


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Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

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