Technical characteristics and repair instructions for the MAZ agricultural worker

Device

Device MAZ-4370 Zubrenok:

1. Power unit. It includes an air filter and a two-stage hopper designed to collect dust.
2. Transmission. This truck model is equipped with a pneumatic version of the gearbox, equipped with hydraulic power steering.
3. Chassis. This includes the front axle, braking device and longitudinal linkage.
4. Brake system. It can be working, auxiliary, parking and spare.
5. Electrical equipment. This includes a tachograph, a heating unit, and an interior lighting system.
6. Steering system with distributor.
7. Driver's cabin.
8. Cargo part.

The transport can also be used together with a car trailer.

Transmission

The MAZ-437041-262 gearbox includes the following elements:

1. Carter. It contains all the main components. Using the gearbox housing, the gearbox is attached to the clutch mechanism.
2. Transmission shafts. Their rotation occurs in a bearing, which is installed in the crankcase. The shafts are equipped with gears with different numbers of teeth.
3. Synchronizing device. It is designed for smooth and silent gear shifting. This mechanism equalizes the angular speeds of rotating gears.
4. Gear shift device. It is controlled using a special handle, which is located in the driver's cabin.

The MAZ gear shift diagram is in the vehicle's operating manual.

Gearbox ratios depend on the selected vehicle modification (from 3.59 to 8.75).

Rear axle

The design of the MAZ-437043 rear axle consists of the following elements:

• beam;
• flanges;
• mounting bolts and nuts;
• locking ring;
• 2 stamped casings;
• gearbox housing.

The ends of the stamped casings are welded to flanges, which have holes for oil seals and bearings. This design reduces the likelihood of oil leakage in the gearbox.

On the front side of the flanges there are fasteners that are necessary to connect the rear axle to the brake system of the rear wheels. The mounting bolts also connect the oil deflector, the plate that is necessary to secure the bearing, and the sealing gasket. The locking ring is needed to secure the ball bearing.

Electrical equipment

Electrical equipment MAZ-437041-268 includes:

1. A rechargeable battery with a rated voltage of 12 V. The batteries are connected in series to each other; the wiring diagram is in the user manual.
2. Generator type installation. It is equipped with a rectifier unit, which has an integrated voltage regulator.
3. Starter. This is a device designed to start an engine.
4. Battery disconnect switch.
5. An electric torch device, which is necessary to facilitate starting the engine at sub-zero temperatures.
6. Power unit pre-heater.
7. Lighting system (internal and external) and light signaling.

Device and characteristics

The MAZ-555142 dump truck is compact and can be easily moved in the city. The truck is designed for transporting bulk materials and other cargo. The equipment is used in agriculture, industry, road and municipal construction. The standard car model is equipped with a rear dump body.

The movement of the body is remote controlled. The driver's cabin has 2 seats and storage space. The chair has springs and can move forward and backward. There is an adjustable steering column.

The side mirrors are electrically heated. The disadvantage is the lack of good shock absorption in the area where the cabin is attached. To gain access to the truck's systems, the cab can be tilted forward hydraulically. The cab moves with the radiator grille open. The bottom of the vehicle is heated, which allows the truck to be used in winter.

Specifications:

1. Dimensions 5990x7850x2500 mm.
2. Power 180 hp
3. Speed ​​83 km/h.
4. Weight 7580 kg.
5. Load capacity 8500 kg.
6. Body volume 5.4 m³.
7. Body dimensions 3800x2269x630 mm.
8. Wheel formula 4x2.
9. Turning radius 7.9 m.

The body lift drive is located under the platform. The tipping mechanism is hydraulic with pneumatic control. A telescopic hydraulic cylinder is installed. This allows you to develop high load capacity with low weight. To increase safety, the hydraulic cylinder control valve is equipped with a fuse.

In this case, with an overload of more than 1.5 tons, the platform will not fully rise. The tailgate axles are controlled by a pneumatic cylinder. The truck is equipped with a double-disc clutch. The components of this system are subject to wear due to heavy overloads and require regular maintenance.

Engine

The truck is equipped with a D260.1-440 diesel engine. This is a four-stroke six-cylinder internal combustion engine with a vertical cylinder arrangement. The engine is equipped with direct fuel injection and a turbocharging system. This motor can be operated at air temperatures from -45 ºC to +40 ºC.

Engine Specifications:

1. Name D260.1-440.
2. Four-stroke type.
3. Engine capacity 7.12 liters.
4. Cylinder diameter 110 mm.
5. Piston stroke 125 mm.
6. Compression ratio 15.
7. Specific fuel consumption 220 g/kWh.
8. Power 114 kW.
9. Rotation speed 2100 rpm.
10. Torque 622 Nm.
11. Weight 700 kg.

Specifications

MAZ-437041-328 - technical characteristics:

Fuel consumption

The average fuel consumption per 100 km of MAZ-437043 is 31 liters.

Load capacity

Load capacity characteristics: maximum cargo weight is 4,700 kg.

Dimensions

Dimensions and body size:

• length - 6.25 m;
• width - 2.48 m;
• height - 2.3 m.

Vehicle weight - 10,100 kg.

Maintenance and repair

Main malfunctions of MAZ-437043-328 and ways to eliminate them:

1. The starter turns the crankshaft. In this case, it is recommended to carry out an external inspection of the contacts of the chain mechanism, contacts of the starter brushes, and also check the charge level and integrity of the batteries.
2. Low supply air pressure. This problem may be caused by a leak in the airflow system. If the resistance level of the exhaust pipeline is increased, the exhaust valves become clogged, so they need to be flushed.
3. Oil leaks out of the coupling through the seals. The malfunction may be due to a damaged or worn oil seal. In this case, the damaged element should be replaced.

Diagnostics

The diagnostic procedure is carried out in several stages:

• external inspection of the main components;
• computer diagnostics of transport;
• engine and gearbox disassembly.

During the external inspection it is necessary to check:

• condition of the power unit;
• integrity of transmission parts and the presence of gaps between structural elements;
• integrity of the suspension mechanism;
• tire pressure level and wheel condition;
• serviceability of the brake system;
• integrity of cabin glass;
• functioning of internal and external lighting.

Computer diagnostics are necessary to check the condition of the manual transmission. It allows you to evaluate the operation of the turbocharger air intercooling system and the serviceability of the ignition system.

Disassembly

Engine disassembly procedure:

1. Install the dismantled motor on a special stand.
2. Unscrew the clutch housing mounting bolts.
3. Remove the gearbox.
4. Remove the bolts from the coupling housing.
5. Remove the pressure plate.
6. Pull out the driven disk.
7. Remove the middle drive and driven disk.
8. Undo the cotter pins and unscrew the 2 fasteners.
9. Remove the starter, generator set, and pneumatic compressor.
10. Remove the impeller.
11. Dismantle the fan, pull out the rod and remove the filter element.
12. Remove the side plugs.
13. Remove the connecting pipes of the water thermostats.
14. Remove the exhaust valve cover.
15. Remove the fuel pipe.

Engine Installation

Description of the MAN engine installation process:

1. Using a special lifting mechanism (crane or winch), it is necessary to install the motor on the MAZ. The rear supports must be secured to the brackets.
2. Then you need to screw in the bolts and tighten them.
3. After this, the fan impeller should be installed.
4. Using a tube, connect the expansion tank to the radiator part.
5. Connect the upper radiator pipe to the power unit.
6. Then you need to connect the heating system pipe.
7. Attach the inlet pipe to the water pump pipe.
8. Connect the oil line to the hydraulic booster.
9. Finally, you need to install the connectors and cables of the oil pressure level sensors in the mechanism.

Engine models for MAZ Zubrenok:

• YaMZ;
• MAN;
• Mercedes;
• Renault.

Clutch adjustment

The MAZ clutch is adjusted as follows:

1. Adjust the amount of withdrawal of the middle disk of the driving type. This helps provide the required clearance between the coupling surfaces.
2. Adjust the gap between the end part of the valve cover body and its adjusting bolt.
3. Adjust the pedal free play.
4. Engage the clutch and set the gearbox handle to the neutral position.
5. They begin to turn the engine flywheel, screwing the nuts into the middle drive disk until they stop.
6. Secure the adjusting screws using locknuts.
7. Measure the gap between the end of the rear valve cover and the adjusting bolt.
8. Check the free play of the pedal.

MAZ 555102, 555105 Operating manual

Operation and maintenance manual for MAZ vehicles 555102, 555105, 555140, 555142, 533702, 533703, 533742, 543302, 543303, 543342, 543403, 543405, 543442. The manual includes a brief description of the design of the vehicles MAZ, instructions for use and care and adjustment of components and assemblies. Intended for drivers and road transport workers involved in the operation of these vehicles. The general editing was carried out by the chief designer of the association, V. V. Korsakov.

Contents of the book: Safety requirements and warnings 7 Technical characteristics 11 Controls and monitoring devices 19 Brief description of the design and operation of the vehicle components, their adjustment and maintenance 24 Engine 24 Transmission 31 Chassis 54 Steering 73 Brake systems 77 Electronic control systems 87 Electrical equipment 91 Cabin 101 Mechanism for lifting the platform of a dump truck 108 Truck platform 115 Fifth wheel coupling 117 Design features of a vehicle with hydraulic take-off 119 Timber equipment 120 Possible malfunctions of vehicle units and systems and how to eliminate them 125 Running in the vehicle 136 Features of vehicle operation 137 Preparing the vehicle for operation 137 Driving the car and monitoring its operation 148 Maintenance 150 Maintenance of the car during the warranty period 150 Types and frequency of maintenance 151 List of maintenance work 153 Lubrication of the car 156 Marking the car 157 Storing the car 158 Transporting the car 159 Factory guarantees And the procedure for presentation, consideration and satisfaction of claims regarding vehicle quality 160 Applications 163

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Modifications

The serration has several modifications. They all differ in terms of load, capacity and carrying capacity:

1. MAZ-437043-322. This is a tractor-trailer with a sleeping bag. The volume of the cargo platform is 35 m³, the engine power is 155 hp. s., drive axle ratio - 3.9. The maximum weight of the lifted load is 4700 kg.
2. MAZ-437040. This is a truck weighing 10100 kg. Here the total weight is distributed as follows: 3650 kg falls on the front axle, and 6450 kg on the rear cart. The modification is equipped with an MMZ-D245.9-540 engine, the power of which is 136 hp. With.
3. MAZ-437041-268. This is a dump truck with a 4*2 wheel arrangement. The curb weight of the vehicle is 4900 kg. The equipment is equipped with a CAA3-3206 gearbox and an MMZ D-245.30E2 engine, made in accordance with the international environmental standard Euro-2.