Technical characteristics and design of the MAZ-5551 dump truck

MAZ-5551 diagram - car diagrams

Schematic electrical diagram of the equipment of the MAZ-5551 truck, the designation of the elements is shown under each fragment of the module.
The information is intended for car service centers for the purpose of carrying out repairs and maintenance of the truck. You can enlarge a fragment by clicking on it. Electrical equipment of the MAZ-5551 truck

8 13.5205010 3-blade windshield wiper 5 14.3726010 Side turn signal repeater 12 1426-3737000 Ground switch 27 16.3741 Pneumatic signal valve 19 2001.3843010 Speedometer sensor 23 2412.3716010 Lantern rear fog 28 25.3708-01 Starter 3 2506.3731010 Position lamp 1 2606-3726010 Front turn indicator 6 3416.3711010 Headlight 17 3507-3716010 Rear lamp 18 3517-3716010 Rear lamp 15 4006.3709000 Windshield wiper and washer switch 9 5551-3805010-01 Instrument panel assembly 11 64221-3831010 Additional instrument panel assembly 10 64229-3805012 Instrument panel assembly 16 6606.3709000 Turn signal switch , low and high beam 13 6ST-190A Battery 14 ADUI-407511.002 Fuel level indicator sensor 29 BSK23.3722 On-board control system 24 MM124D-3810600 Emergency air pressure sensor 25 MM125D-3810600 Pneumatic brake signal switch, blocking 26 MM370-3829010-UHL Air pressure sensor 22 ME237-3730040 Electric motor 4 PK142-3714000 Cabin light 20 RS951A-3726010 Turn signal breaker 21 S306/S307-3721000 Electrical signal set 5 SBIE301.126.002 Side turn signal repeater ST-142D Starter 2 FP135-3716010-G Lantern reverse gear 7 FP152-3743010 Fog light

Schematic diagram of the sidelights, side lights, cabin and berth lighting, side repeaters, windshield wipers MAZ 5551

2 11.3714010-50 Cabin lighting 5 13.5205010 3-brush windshield wiper 20 13.5205800 Lever 10 13.5205900 MAZ-5551 brush 19 14.3726010 Side turn signal repeater 7 201418 Bolt M 6-6g 3 201454 Bolt M8-6gx16 18 220079 Screw M5-6gx14 14 220103 Screw M6 -6gx12 OST 37.001.127-81 13 240037 Screw M5x16 12 25.3731010 Lantern 16 250464 Nut M5-6N OST 37.001.124 -75 8 250508 Nut M6-6N OST 37.001.124 -75 17 252133 Washer 5T 6 252134 Washer 6T 4 252135 Washer 8T 9 5336-5205038 Windshield wiper bracket 11 64221-3731043 Gasket 21 64221-8201094 Cap 1 A24-21 Lamp 15 FP316-3731000 Reflector

Scheme of assembly and connection of electric pneumatic outlets of the MAZ 5551 semi-trailer

28 014-018-25-2-2 Ring 9 200267 Bolt M8-6gx45 14 201420 Bolt 3 201497 Bolt M10-6gx25 16 250508 Nut M6-6N OST 37.001.124 -75 11 250510 Nut M8 5 250512 Nut M10x1-6N 23 250636 Nut M16x1.5-6N 13 252004 Washer 6 OST 37.001.144 -96 8 252005 Washer 15 252134 Washer 6T 4 252136 Washer 10 OT 10 252155 Washer 8L 24 252159 Washer 12 315 403 Clamp 26 375960 Washer 27 404303 Fitting 25 404308 Fitting 451.711.027.0 Hose 2 500-3724042 Bushing 17 5336-3724152 Protective socket cover 22 54321-3521104 MAZ-5551 clamp 21 64221-3506380 Spiral pipeline 1 64221-3723140 Socket bracket 18 6422 1-3724473 Ground wire 20 952.200.221.0 Connecting head 19 952.200. 222.1 Connecting head 6 PS325-3723100 Plug socket 7 PS326-3723100 Additional plug socket

Pads, contacts, tips MAZ 5551 - designation and appearance

19 45 7373 8412 Tip D-5.5 V-10 L-18 45 7373 8413 Tip D-6.5 V.12L-18 45 7373 8416 Tip D-5.5 V-10 L-16 45 7373 8526 Tip D -4.2 V-8 L-15 45 7373 8527 Tip D-5.5 V-9 L-15 45 7373 8528 Tip D-6.5 V-12 L-16 45 7373 8531 Tip D-10.5 V -17 L-20 45 7373 8532 Tip D-12.5 B-19 L-21 45 7373 8536 Tip D-5.5 B-9 L-15 45 7373 8537 Tip D-6.5 B-12 L-16 45 7373 8547 Tip D-10.5 B-18 L-21 45 7373 8548 Tip D-12.5 B-20 L-22 45 7373 8553 Tip D-5.5 B-10 L-18 45 7373 8554 Tip D -6.5 V-12 L-18 45 7373 9001 Socket block 14 45 7373 9002 Pin block 1 45 7373 9003 Socket block 5 45 7373 9004 Pin block 6 45 7373 9007 Socket block 7 45 737 3 9008 Pin block 8 45 7373 9009 Block socket 2 45 7373 9011 Socket block 15 45 7373 9013 Socket block 9 45 7373 9014 Socket block 11 45 7373 9016 Socket block 4 45 7373 9028 Socket block 3 45 7373 9035 Socket block roaring 13 45 7373 9089 Socket block 10 45 7373 9094 Socket block 12 45 7373 9096 Pin block 17 4573738008 MAZ-5551 socket 20 64221-3537048 Clamp L-200 64221-3724620 Clamp L-94 64221-3724622 Clamp L-136 64221-372462 6 Clamp L-234 64221-3724628 Clamp L-269 21 64221. 3724618 Lock

Diagram of the instrument panel and controls

21 0975.00.00.000-05 Refrigerator switch 15 0975.00.00.000-08 Cross-axle differential lock switch 17 0975.00.00.000-09 Center differential lock switch 27 11.3704 Push-button switch 1318-27 Tachometer 13 22 02-3803010-41 Plug 5 2212-3803010-07 Lamp control lamp for turning on the turn signal 6 2212-3803010-08 Control lamp for turning on the trailer turn signal 8 2212-3803010-11 Control lamp 11 2212-3803010-13 Control lamp for turning on the cross-axle differential lock 12 2212-3803010-14 Control lamp for turning on the center differential lock 9 2212 -3803010-17 Control lamp for turning on the electric torch heater 7 2212-3803010-28 Control lamp for turning on the high beam headlights 10 2212-3803010-35 Control lamp for turning on the gearbox divider 35 2312.3803010-03 Control lamp block 38 233064-01 Screw 2 M6-6N OST 37.001. 126-81 3 2531-3813010 Tachometer 4 28.3801010 Instrument cluster MAZ-5551 40 3012.3803.010 Indicator lamp block 29 32.3710 Hazard switch 32 374373 Nut М10х1-6Н 20 3812.3710 000-02.04 Rear fog lamp switch 14 3812.3710000-02.05 Hitch light switch 21 3812.3710000-02.17 Refrigerator switch 23 3812.3710000-02.23 Heated mirror switch 18 3812.3710000-02.27 Semi-trailer rotary axle lock switch 15 3812.3710000-02.28 Cross-axle differential lock switch 17 3812.3710000-02.29 Hitch light switch 22 3812.3710000-02.38 Road train sign light switch 19 3812.3710000-10.03 Switch fog lights 16 3812.3710000.02.09 Engine light switch 5337-3805010 Instrument panel assembly 53371-3805010 Instrument panel assembly 33 5428-3710021 Switch handle MAZ-5551 54323-3805010 Instrument panel

Electrical diagram of the MAZ 5551 car

Typical electrical diagram of a MAZ 5551 truck. To enlarge the diagram, click on it. On the diagrams, letters indicate the colors of the wires: B - white, G - blue; J - yellow; O - orange; P - pink; C - gray; 3 - green; K - red; Kch - brown; Ch - black; F - purple. The vehicle's power supply system consists of two sources: batteries and an alternating current generator set. In addition, the system includes a number of intermediate relays, a battery mass switch and a key switch for instruments and starter.

MAZ car power supply system

MAZ battery connection diagram

MAZ vehicles are equipped with batteries of the 6ST-182EM or 6ST-132EM type. The voltage of each battery is 12 V. Two batteries are connected in series, which increases the operating voltage to 24 V.

Fuses in the MAZ electrical circuit

Electrical diagram of MAZ 5551, MAZ 5433, MAZ 54331 and MAZ 5433

11.3704000 Control button for remote activation of the mass 11.3714010 Cabin light 11.3747010 Relay 11.3812010 Voltage indicator 1102.3740999 Fuel solenoid valve 111.3722000 Fuse block 12.3802010 Electric speedometer 1202.3 741000 Additional resistor with electrothermal relay 124.3803010 Warning lamp 13.5205009 3-brush windshield wiper 13.5205010 3-brush windshield wiper 131-3839600 Air clogged sensor filter 14.3726010 Side turn signal repeater 20.3843010 Electric speedometer sensor 25.3708000-01 Starter assembly 32.3710000 Hazard switch 341.3711010 Headlight 47KV Socket 47KV 500-3724057-D Jumper battery 504-3724062-Zh Wire from batteries to starter 5335-3724071-01 Wire "ground" Price 5336-3724039-11 Power cable for portable lamp socket 5336-3724060-02 Ground wire 5336-3724069-10 Ground switch wire 5336-3724078-01 — 5336-3724188-01 — 5336-3900032 — 5 433-3724028 -01 Harness along the side member 5433-3724328-01 — 54331-3724021 Harness for the rear light left 54331-3724026 Harness for the rear light right 5551-3724008 Harness main 5551-3724021 Harness for the rear light left Price 5551-372402 6-01 Right rear light harness 5551-3724028 -03 Harness on the side member 5551-3724046-02 Harness on the roof 5551-3724056 Wire from the battery to the ground switch 5551-3724160 Harness right 5551-3724328-01 - 6ST-190A Battery BM163B-3806600 -D Fuel level sensor VK343 -3709000-01.03 Switch VK343-3709000-01.04 Switch VK343-3709000-01.16 Switch VK343-3709000-01.35 Switch VK353-3703999 Starter switch VK353-3704000 Starter switch VK403 A-3716000 Switch VK416B-3709000-01 Switch for lighting the instrument panel with rheostat VK856- 3707999 Starter switch VK860B-3737000 Ground switch G273V-3701000 Alternator KT127-3749999 Contactor LV211-3714328 Lamp holder (44737473129) MM111D-3810600 Emergency oil pressure sensor MM1 24D-3810600 Emergency air pressure sensor MM125D-3810600 Pneumatic brake signal switch, blocking MM370-3829010 Air pressure sensor ME237-3730000 Electric motor P145-3726010 Light and turn switch P147-3709000-04.11 Switch P147-3709000-09.09 Switch P150-3709000-09.11 Switch PD308B- 3715300 Engine compartment lamp PD511B-3803010 Control lamp block PD512B-3803010 Indicator lamp block PR112-3722000-01 Fuse block PR112-3722100-A Fuse insert PR112-3722200-A Fuse insert PS300A3-3723149 Plug PS325-3723149 Plug PS400-3723100 Socket plug PF1306-3712010 Sidelight PF233A-3737999 Signal light RS103-3707999 Starter relay RS530-3721000 Relay RS531-3721000 Noise alarm RS951A-3726010 Turn signal breaker S306-3721000-G Signal (set. up to 1988) S307-3720999 Signal (installed before 1988) S313-3721000 Signal (installed since 1988) S314-3721000 Signal (installed since 1988) S314G-3721000 Signal (installed since 1988) d.) TM100V-3808000 Water temperature indicator sensor TM112-3810000 Water temperature indicator sensor UB170-3806010-01 Fuel level indicator UK168-3810010 Pressure indicator receiver UK170-3810010-02 Pressure indicator UK171-3807010-01 Index water temperature FG152A-3742999 Headlight fog lamp FG152A-3743000 Fog lamp FP130-3716010-B Rear left lamp FP130-3716010-G Rear right lamp FP135-3716010-G Reversing lamp FP310E-3731009 Retroreflector YA120M1-3701999 In integral voltage regulator

Source of the article: https://electroshemi.ru/publ/drugie_skhemi/maz_5551/18-1-0-51

General information

MAZ 5551 is considered one of the oldest models currently produced by the Minsk Automobile Plant. The enterprise itself appeared in the capital of Belarus in 1944. Four years later, the plant produced its first cars. The debut of the MAZ 5551 took place much later - in 1985. The MAZ 5337 model was chosen as the basis for the equipment. After significant improvements, the new product was put into production.

The car has received noticeable changes compared to its predecessor. The shape of the gear shift lever, which was made in the form of a crowbar on earlier versions, has been revised. The driver no longer had to catch transmissions in the interior space. At the same time, the previous speed switching scheme has been preserved.

Other improvements include:

• absence of problems with “unfastening” the cabin, present in predecessors;
• replacing the drum handbrake with an element with spring energy accumulators. The brake system also includes bolts for forced brake release, providing braking in the absence of air in the system;
• new shape of headlights, individual cab components and radiator grille. The split windshield was replaced with a panoramic one with a large view. A spoiler was also installed on the roof of the car.

The first modifications of the MAZ 5551 had a completely unremarkable appearance. A cabover cab with a powerful front bumper with large round headlights and a small radiator grille, visually divided into three sections, was chosen for the car. The classic variation received a lifting metal body with one folding side and a rear unloading scheme.

In 1998, MAZ 5551 underwent restyling. The updated version received a new cabin design, minor design changes and a revised instrument panel. The inside of the car has become more spacious. The vehicle was equipped with a large 2-seater cabin with the ability to recline to check the technical condition.

The restyled version turned out to be more interesting. The radiator grille increased in size (the previous divisions were removed), and the bumper became more streamlined (in addition to headlights, turn signals were installed on it). Plastic elements appeared on the sides next to the doors. The structurally updated MAZ 5551 has changed slightly - some shortcomings have been corrected, new engines have appeared. This modification is currently offered on the market.

The MAZ 5551 family is quite extensive. The basic version is a dump truck with a folding body. However, the Minsk Automobile Plant also produces a chassis used for installing various special-purpose equipment, which increases the scope of application of the vehicle. Articulation into a road train is also available. For the northern regions, the “HL” modification is produced, the operation of which is possible at temperatures down to -60 degrees Celsius.

MAZ 5551 differs from most competitors in its compact dimensions, therefore it can be used in urban environments. Traditionally, the car is in demand at construction sites within the city. The main purpose of the machine is to transport bulk materials over short distances. High technical characteristics make this model one of the most popular in the middle class dump truck category.

Electrical systems of a MAZ car

The electrical system includes the following mechanisms:

1. Power supply and engine starting system. It consists of an intermediate relay, a battery mass switch, a device key switch and a starter.
2. Accumulator battery. Its rated voltage is 12 V. There are 2 batteries installed here, which are connected in series with each other.
3. Generator set. This is an alternating current generator equipped with a rectifier unit.
4. Starter with Euro-3 electrical circuit. It consists of a contact bolt, a glass, an armature rod, a relay, a winding, threaded plugs, and an electrical grid.
5. Battery disconnect switch. It is necessary to disconnect and connect the battery to the vehicle ground.
6. Electric torch device. Its function is to facilitate engine starting in low temperature conditions.
7. Preheater.
8. Lighting and light signaling system. This electrical circuit includes headlights, spotlights, fog lights, rear lights, and lighting inside the driver's cabin.
9. Instrumentation. This includes a speedometer, a two-needle pressure level indicator, a block of control and warning lamps.
10. Sound alarm. It is designed to alert you when the air pressure level in the brake mechanism drops to a critical level.

Maz 5516

Another dump truck produced at the Belarusian plant has a 6x4 wheel arrangement and has been produced since 1994. We are talking about the famous Maz 5516 truck.

This Maz model was initially produced for several purposes, which is explained by 2 types of booths - long and short. Let's take a closer look at the area where this truck is used.

Modification 5516 is intended for the transportation of bulk cargo, in particular grain. Here are its features:

• Differs from the standard version in the ability to perform 2-sided lateral unloading;
• The volume of the platform of this modification is increased to 22 cubic meters. meters, therefore, the carrying capacity is increased. The latter is 20 tons.

The 5549 was made on the 5335 platform. On this MAZ 5549, a distinctive feature is the optics moved to the front bumper. This meets exactly the latest requirements regarding the installation of light optics on dump trucks.

A special cap and decorative radiator grille were installed in the front area of ​​the cabin. “Dimensions” were also installed here, clearly combined with the turn indicators.

The carrying capacity of this MAZ is relatively small - 8 tons. But it consumes much less - 22 l/100 km.

AUTOMOTIVE ELECTRICAL DIAGRAMS

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Electrical connection diagram for the chassis of MAZ cars -631705

List of electrical equipment elements on the diagrams of the MAZ-631705 Al car - Fuse and relay block A3 - Windshield wiper breaker A6 - Turn signal breaker A7 - Radio tape recorder A8 - Range locking relay BAI, BA2 - Loudspeaker VK - Temperature sensor VR1.VR2 - Air pressure sensor VRZ - Oil pressure sensor BP4.BP5 - Emergency air pressure sensor BPI0 - Emergency oil pressure sensor BV2 - Speedometer sensor BV3 - Speed ​​sensor EKZ, EK4 - Spark plug EFU E1, E2 - Headlight EZ, E4 - Fog light E5, E6 - Front light E7 — Lantern E8 — License plate lamp E9…E11 — Road train sign lamp EI2 — Underbody lamp

E13,E14 — Side turn signal EI5.EI6 — Position light E17, E18 — Rear light E20 — Reversing light E23.E24 — Cabin light E25 — Engine light E26 — Headlight — spotlight E28, E27 — Bed light EK1 ,EK2 - Shelving light EZO - Mirror heater EL1...EL6 - Instrument backlight lamp FU1 - Fuse 60 A FU2 - Fuse 30 A FU3-FU9 - Fuse 8 A FU11 - Fuse 16 A G - Generator GBl, GB2 - Battery 6CT I90A HA 1 - Set of electrical signals HA2 - Pneumatic signal KK1 - Additional resistance KK2 - Parking brake warning lamp breaker K1 - Starter relay Ml - Starter M2, MZ - Heater motor M4 - Wiper gear motor M8 - Washer motor RR - Instrument cluster P2 - Tachometer PS — Speedometer RP — Backlight rheostat XSl — Main socket XS3 — Socket XS4 — Portable lamp socket in the cabin XS5, XS6 — Socket WA — Antenna SA1 — Starter switch SA2 — Wiper switch SA3 — Main light switch SA4 — Turn signal switch SA5 — Heater switch SA7 — Lamp switch SA8 — Lamp switch SB1, SB3 — Push-button switch SB4 — Hazard switch SA9 — Hydraulic extraction valve switch Push-button switches with backlight: SB5 — Fog lights SB8 — Neutral switch SB9 — Engine light SB11 — Finder headlight SB12 — Interwheel differential SB13 — Center differential SB 14 — Road train lights SB 15 — Heated mirrors SB20 — Shelving lights SK — Emergency temperature sensor SLI — Fuel level sensor SP1.SP6 — Stop signal switch SP7 — Switch SQ1, SQ2 — Switch Warning lamps: HG1 — Warning lamp block HG4 — Tractor turns HG5 — Trailer turns HG7 — ECU systems HG8 — High beam HG9 — Divider switches HG10 — Interaxle blocking HG11 — Cross-wheel locks HG12 — Neutral switches Electro-pneumatic valve: Y1 — Pneumatic signal Y2 — Fuel electric valve Y3, Y4, Y7 , H9 -Electromagnet Y5 -Electromagnet

Electrical connection diagram for the cabin of MAZ-631705 cars

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Maintenance, faults and repairs

Basic malfunctions and repairs of electrical equipment:

1. The indicator lamps are out of order. In this case, it is recommended to check the reliability of the contact in the detachable connections, inspect the safety device for damage and defects, check the integrity of the backlight rheostat and the serviceability of the relay.
2. The lights do not come on when reverse gear is engaged. In this case, you should eliminate the short circuit in the flashlight wiring, check the reliability of the contacts, connect the harness to the reverse sensor, inspect the lamp for defects, and align the wires in the block.
3. The rear brake lights do not light up. The problem may be due to an open circuit, a short circuit, a malfunction of the brake signals, or a broken incandescent lamp filament.
4. The head lights do not light up. It is necessary to inspect the electrical wiring for a short circuit, conduct an external inspection of the switch (if damage is found, replace it), and check the serviceability of the relay.
5. Heated mirrors do not work. You should inspect the contacts in the detachable connections, check the fuse for wear, and replace damaged parts in the system.
6. The headlights are constantly on. In this case, you need to check the serviceability of the switch, the reliability of the contacts in the blocks, and inspect the relay for defects.
7. The direction indicators do not light up. It is necessary to replace the lamps, inspect the breaker, and replace the BKA.
8. The tachometer is out of order. The malfunction may be caused by malfunctions of the sensor, safety device, or unreliable contacts in the blocks.

MAZ generator repair

To perform the work, the installation is usually removed from the power unit.

Next, disconnect the battery ground. Then disconnect the wires from the terminals. Do not forget to loosen the tension bolt of the MAZ generator belts, as well as the fastening nuts.

Hold the installation carefully to avoid damaging the brackets. Release the bolt and carefully remove the pin. Then remove the MAZ generator belt from the pulley and the installation itself. The assembly is performed in the opposite state.

The removed mechanism must be cleaned and disassembled according to the diagram:

1. Unscrew the screw connection of the wires, as well as the brush holder, and dismantle the part;
2. Unscrew the IRN and remove the regulator;
3. Unscrew the cover fastenings and the coupler of the MAZ generator;
4. Unscrew the nuts;
5. Remove the cover with the stator;
6. Unscrew the terminal nuts, as well as the rectifier screws;
7. Remove the pulley by unscrewing the connection;
8. Knock out the key;
9. Remove the fan and bushing;
10. Release the cover from the shaft and remove the bearings.

Specifications

MAZ-5551 - technical characteristics and features of vehicle parameters:

Engine

The MAZ-5551A2-323 has an engine model - YaMZ-236M2-1, whose power is 180 hp. With. The power unit is equipped with 6 cylinders, the diameter of which is 13 cm. The working volume is 11.15 liters. The maximum crankshaft speed is 1,450 rpm. The cylindrical elements are arranged in a V-shape. The stroke of the piston part is 140 mm.

The engine consumes diesel fuel. It is equipped with a direct fuel injection system and turbocharging. The design of the power unit includes an intermediate air flow cooling system and a heat exchange device with a crankshaft speed controller.

The amount of exhaust gas emissions into the atmosphere corresponds to the parameters of the international environmental standard Euro-3.

Fuel consumption

Fuel consumption of MAZ-5551 per 100 km is 22 liters. In winter, fuel consumption increases to 30 liters.

Load capacity

The characteristics of the MAZ include a load capacity of 10,000 kg.

Refueling volumes

Refueling tanks require a tank for fuel and oil. The volume of the fuel tank is 200 l, and the oil tank is 70 l.

Dimensions

MAZ body dimensions: 3.8x2.27x0.63 m.

Vehicle dimensions:

• height - 2.92 m;
• length - 5.99 m;
• width - 2.5 m.

Weight parameters

Vehicle weight - 16,230 kg, curb weight - 7,580 kg.