Belarus 1523.6 User manual

BELARUS
1523.6
1523.6-0000010 OM
OPERATOR’S MANUAL
2014

The operator's manual was composed by an engineer of the first Department of
Constructive and Experimental Works (DCEW-1), A.V. Runov, with participation of key
specialists of DCEW-1 of OJSC “Minsk Tractor Works”
Publication responsible person – Y.M. Korotky, head of engineering office of design docu-
mentation of the DCEW-1.
Executive editor – N.I. Zezetko, chief designer of tractor production of OJSC “MTW”.
Editor-in-chief – A.G. Stasilevich, OJSC “MTW” general designer.
Operator's manual contains brief description and specifications of tractors Belarus 1523.6
produced by Minsk Tractor Works. The main tractors operating rules are set forth, the in-
formation about their adjustments and maintenance is provided.
Operator's manual is meant for tractor study, operation rules and maintenance of tractors
“BELARUS-1523.6”.
In view of Minsk Tractor Works policy directed to constant upgrading of produced goods,
the construction of some units and parts of Belarus tractor may undergo changes which
are not reflected in present edition. The detailed information may be obtained from
“BELARUS” dealer.
© Open Joint Stock Company ”Minsk Tractor Works”, 2014
All rights reserved. No part of this book may be reproduced in any form without written
permission of OJSC “MTW”.

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CONTENTS
1 TRACTOR DESCRIPTION AND OPERATION ..............................................................11
1.1 Tractor assignment ......................................................................................................11
1.2 Technical specifications ...............................................................................................12
1.3 Tractor composition .....................................................................................................15
1.4 Vibration level at the operator's working place of the tractor “BELARUS -1523.6»......18
1.5 Noise level at the operator's working place of the tractor “BELARUS -1523.6»...........18
1.6 Tractor and its component marking .............................................................................18
2 CONTROLS AND INSTRUMENTS ................................................................................20
2.1 Layout of controls and instruments of the tractor .........................................................20
2.2 Switches of the instrument board.................................................................................21
2.3 Upper shield unit of button switches ............................................................................24
2.4 Conditioner control....................................................................................................24
2.4.1 Conditioner control in the conditioning mode ............................................................24
2.4.2 Conditioner control in the heating mode ...................................................................25
2.4.3 Cab ventilation ..........................................................................................................25
2.5 Cab heater and fan control ..........................................................................................26
2.6 Instrument board..........................................................................................................27
2.7 Pilot lamps unit ............................................................................................................29
2.7.1 General information ..................................................................................................29
2.7.2 Functioning algorithm of pilot lamp to indicate operation of heating plugs................30
2.8 Integrated indicator and integrated indicator control panel ..........................................31
2.8.1 General information ..................................................................................................31
2.8.2 Assignment and operation principle of integrated indicator gauges..........................32
2.8.3 Pilot lamps of the integrated indicator .......................................................................35
2.8.4 Description of testing the integrated indicator performance ......................................36
2.8.5 The order of the integrated indicator programming...................................................36
2.9 Information display and engine control system panel ..................................................39
2.9.1 General information ..................................................................................................39
2.9.2 Adjustment of brightness and sharpness of the information display .........................39
2.9.3 Call-up of changeable images and parameters on the screen of the information
display................................................................................................................................39
2.9.4 Engine control system panel.....................................................................................42
2.10 Steering .....................................................................................................................42
2.10.1 General information ................................................................................................42
2.10.2 Steering wheel adjustments....................................................................................42
2.11 Parking brake control .................................................................................................43
2.12 Handle for fuel supply manual control........................................................................43
2.13 Tractor pedals............................................................................................................43
2.14 Switching of ranges and gears on GB 16х8...............................................................43
2.14.1 General information ................................................................................................43
2.14.2 Velocity diagram of tractor with GB 16х8 ................................................................44
2.15 Control panel for rear axle DL, FDA and FPTO drives...............................................45
2.15.1 General information ................................................................................................45
2.15.2 Front power take-off shaft control ...........................................................................46
2.15.3 FDA drive control ....................................................................................................46
2.15.4 Rear axle differential lock control............................................................................47
2.15.5 Annunciation of oil emergency temperature in the hydraulic lift linkage..................47
2.16 Rear PTO control.......................................................................................................48
2.17 Control of rear lift linkage (RLL) with the hydraulic lift................................................50
2.17.1 General information on rules of RLL control ...........................................................50
2.17.2 RLL control panel....................................................................................................50

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2.17.3 Remote buttons of RLL control system ...................................................................52
2.17.4 Troubleshooting of RLL electronic control system ..................................................53
2.17.5 Front lift linkage control...........................................................................................54
2.18 HLL pump control.......................................................................................................54
2.19 HLL valve group section control (remote cylinders) ...................................................55
2.20 Switching unit and electric cutout fuses .....................................................................56
2.20.1 General information ................................................................................................56
2.20.2 Switching unit and fuses for electrical equipment ...................................................56
2.20.3 Fuses for electronic systems of rear axle DL, FDA, GB reduction unit, FPTO and
RLL control ........................................................................................................................63
2.20.4 Fuses for engine electronic control system.............................................................64
2.21 Cab locks and handles...............................................................................................65
2.21.1 Cab door locks........................................................................................................65
2.21.2 Side window opening ..............................................................................................65
2.21.3 Rear screen opening...............................................................................................66
2.21.4 Cab hatch opening..................................................................................................66
2.21.5 Cab emergency exits ..............................................................................................66
2.22 Seat and its adjustments............................................................................................67
2.22.1 General information ................................................................................................67
2.22.2 Adjustments of “BELARUS” seat. ...........................................................................67
2.22.3 Adjustments of “Grammer” seat..............................................................................68
2.23 Control of the transmission hydraulic system pump drive ..........................................69
2.24 Control of the pneumatic system compressor............................................................69
2.25 Connector elements of the electrical equipment ........................................................70
2.25.1 Socket to connect coupled agricultural equipment..................................................70
2.25.2 Connection of additional electrical equipment of coupled machines.......................70
2.26 Creeper control ..........................................................................................................71
2.26.1 Creeper control on tractors with GB16x8 ................................................................71
2.26.2 Creeper control on tractors with GB 24x12 .............................................................72
2.27 Gears and ranges shifting of GB 24х12 .....................................................................72
2.28 Fuel tanks ..................................................................................................................74
2.29 SCR system operation ...............................................................................................74
2.29.1 Tank for SCR system liquid ....................................................................................74
2.29.2 Indication of SCR system operation........................................................................75
3 INTENDED USE OF TRACTOR.....................................................................................77
3.1 Safety measures while preparing tractor for operation.................................................77
3.2 Tractor use...................................................................................................................78
3.2.1 Boarding the tractor ..................................................................................................78
3.2.2 Engine start and preparation for it.............................................................................78
3.2.3 Start of tractor movement, GB shifting ......................................................................80
3.2.4 Tractor stop...............................................................................................................81
3.2.5 Engine stop...............................................................................................................81
3.2.6 Leaving the tractor ....................................................................................................82
3.2.7 PTO use....................................................................................................................82
3.2.8 Selection of optimal inner pressure in tires depending on operational conditions and
load on tractor axles ..........................................................................................................85
3.2.8.1 Selection of optimal inner pressure in tires depending on operational conditions
and load on tractor axles....................................................................................................85
3.2.8.2 Tire inflation ...........................................................................................................86
3.2.9 Rear wheel track formation .......................................................................................87
3.2.10 Rear wheel twinning................................................................................................88
3.2.11 Front wheel track formation ....................................................................................89
3.3 Safety measures while tractor operation......................................................................91

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3.3.1 General safety measures while tractor operation......................................................91
3.3.2 Fire safety measures ................................................................................................94
3.4 Tractor final assembly and run-in.................................................................................95
3.4.1 Tractor final assembly...............................................................................................95
3.4.2 Technical maintenance before tractor run-in.............................................................95
3.4.3 Tractor run-in ............................................................................................................95
3.4.4 Technical maintenance during tractor run-in.............................................................96
3.4.5 Technical maintenance after tractor run-in................................................................96
3.5 Emergency actions ......................................................................................................97
4 COUPLING OF IMPLEMENTS.......................................................................................98
4.1 General information .....................................................................................................98
4.2 Types of implements coupled with tractor “BELARUS -1523.6»..................................99
4.3 Lift linkage..................................................................................................................100
4.3.1 General information ................................................................................................100
4.3.2 Three-point rear lift linkage .....................................................................................100
4.3.3 RLL components adjustment rules .........................................................................104
4.3.3.1 Buckles ................................................................................................................104
4.3.3.2 Lifting rods ...........................................................................................................105
4.3.3.3 Upper link.............................................................................................................106
4.3.3.4 The rules of RLL adjustment for tractor operation with implements
of category 2 (LL-2) .........................................................................................................106
4.3.3.5 Mounting of implements to the tractor RLL ..........................................................107
4.3.4 Three-point front lift linkage ....................................................................................108
4.3.5 The rules of agricultural implements coupling to FLL..............................................110
4.3.6 The rules of shifting FLL from operating to transport position .................................110
4.4 Drawbar hitches.........................................................................................................111
4.4.1 General information ................................................................................................111
4.4.2 Drawbar hitch DH-2V (short towing yoke)...............................................................112
4.4.3 Drawbar hitch DH-ЗV (long towing yoke)................................................................113
4.4.4 Drawbar hitch DH-2R (“python”) .............................................................................114
4.4.5 Drawbar hitch DH-1М-01 (draw bar) .......................................................................115
4.4.6 Drawbar hitch DH -1 (crossbeam)...........................................................................116
4.4.7 Coupling clevis KU2000/329NB33 and coupling clevis KU5410/329-33.................117
4.4.8 Piton-Fix coupling PB5329NNB33 ..........................................................................119
4.4.9 Coupling balls KI8329NB33 and KB8329NB33 ......................................................121
4.5 Usage patterns of tractor hydraulic system for drive of operating parts and other
elements of hydraulically-powered coupled machines and implements...........................124
4.6 Front ballast weight....................................................................................................126
4.7 Trailer brake drive......................................................................................................127
4.7.1 General information ................................................................................................127
4.7.2 Integrated pneumatic drive of trailer brakes...........................................................127
4.7.3 Hydraulic drive of trailer brakes ..............................................................................128
4.8 Determination of PTO shaft and cardan shaft applicability ........................................130
4.9 Peculiarities of PTO shaft and cardan shaft applicability ...........................................130
4.10 Ways of changing drawbar features and passing ability of the tractor ....................134
4.11 Features of tractor application in special conditions ................................................135
4.11.1 Tractor operation in areas with rugged topography. Possibility of tractor application
for haylage preparation....................................................................................................135
4.11.2 Application of substances for chemical treatment.................................................135
4.11.3 Operation in a forest .............................................................................................135
4.12 Determination of total weight, loads on front and rear axles, tires holding capacity and
the required minimum ballast...........................................................................................136
4.13 Possibility of front loader installation ........................................................................138

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4.13.1 General information ..............................................................................................138
4.13.2 Safety measures while tractor “BELARUS-1523.6” operation with the loader
installed............................................................................................................................140
4.13.3 Information on the tractor mounting holes............................................................142
5 MAINTENANCE............................................................................................................144
5.1 General instructions...................................................................................................144
5.2 Providing access to the components for maintenance services.................................146
5.3 Maintenance procedure .............................................................................................147
5.4 Scheduled maintenance service operations ..............................................................150
5.4.1 Maintenance service on a shift basis (SBMS) in every 8 – 10 hours of operation or
per shift............................................................................................................................150
5.4.2 Maintenance service in every 125 hours of operation (MS-1).................................158
5.4.3 Maintenance services in every 250 hours of operation (2MS-1), in every 500 hours of
operation (MS-2), in every 1000 hours of operation (MS-3), in every 2000 hours of
operation (special maintenance) and maintenance service that does not coincide with
intervals of MS-1, 2MS-1, MS-2, MS-3 and special MS...................................................167
5.4.3.1 General instructions .............................................................................................167
5.4.3.2 Operation 35. Check / adjustment of clearances in steering joints ......................167
5.4.3.3 Operation 36. Check / adjustment of wheel toe-in ...............................................168
5.4.3.4 Operation 47. Check / adjustment of service brake control..................................169
5.4.3.5 Operation 48. Check / adjustment of parking brake control .................................172
5.4.4 General maintenance services ...............................................................................173
5.4.4.1 General instructions .............................................................................................173
5.4.4.2 Operation 82. Adjustment of GB centrifuge valves ..............................................173
5.4.4.3 Operation 83. Maintenance of engine air cleaner ................................................174
5.5 Seasonal maintenance services ................................................................................176
5.6 Safety measures while maintenance service and repair operations ..........................177
5.6.1 General safety requirements...................................................................................177
5.6.2 Safety precautions for exclusion of hazardous situations related to accumulator
batteries and a fuel tank...................................................................................................177
5.6.3 Guidelines for safe use of leveling jacks and statement of proper places for their
installation........................................................................................................................178
5.7 Instruments, work tools and measuring devices while maintenance
services and repair ..........................................................................................................180
5.8 Filling and lubrication of the tractor with fuel and lubrication materials ......................181
6. POSSIBLE FAILURES AND INSTRUCTIONS FOR THEIR TROUBLESHOOTING ...186
6.1 Possible clutch failures and instructions for their troubleshooting..............................186
6.2 Possible failures in gearbox and instructions for their troubleshooting ......................189
6.3 Possible failures in the electronic control system for rear axle differential lock, front
driving axle drive, front power take off shaft, GB reduction gear and instructions for their
troubleshooting ................................................................................................................190
6.4 Possible failures in rear axle and instructions for their troubleshooting......................192
6.5 Possible failures in rear power take-off shaft and instructions for their
troubleshooting ................................................................................................................193
6.6 Possible failures in front power take-off shaft and instructions for their
troubleshooting ................................................................................................................194
6.7 Possible failures of brakes and instructions for their troubleshooting ........................195
6.8 Possible failures in the pneumatic system and instructions for their troubleshooting.197
6.9 Possible failures of trailer brake hydraulic actuator and guidelines for troubleshooting
.........................................................................................................................................199
6.10 Possible failures of the transmission hydraulic system and instructions for their
troubleshooting ................................................................................................................200
6.11. Possible failures of FDA and instructions for their troubleshooting .........................201

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6.12 Possible failures of the hydrostatic steering control and instructions for their
troubleshooting ................................................................................................................203
6.13 Possible failures in the electronic control system of RLL and instructions for their
troubleshooting ................................................................................................................206
6.14 Possible failures of the hydraulic lift linkage and guidelines for troubleshooting ......212
6.14.1 General information ..............................................................................................212
6.14.2 Instructions for troubleshooting in HLL.................................................................212
6.15 Possible failures in the electrical equipment and instructions
for their troubleshooting ...................................................................................................215
6.16 Possible failures of air-conditioning and cab heating systems and instructions for
troubleshooting ................................................................................................................217
7. TRACTOR STORAGE .................................................................................................219
7.1 General instructions...................................................................................................219
7.2 Requirements for inter-shift storage of machines ......................................................219
7.3 Requirements for short-term tractors storage ............................................................219
7.4 Requirements for outdoors long-term storage ...........................................................220
7.5 Preservation...............................................................................................................221
7.6 Depreservation and represervation............................................................................221
7.7 Putting tractor into operation after long-term storage.................................................221
7.8 Safety requirements for preservation.........................................................................222
8. TRACTOR TOWING....................................................................................................222
Service bulletins...............................................................................................................223

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Introduction
The present manual is designed for studying the structure, operation rules and mainte-
nance of tractors «BELARUS-1523.6».
Scrutinize this manual and operator’s manual of the engine 260S4-0000100 OM, attached
to your tractor. It will help you to study the rules of correct operation and maintenance.
Failure to follow these instructions can lead to operator's injury or a tractor breakdown.
Tractor operation, its maintenance and repair shall be carried out only by employees, fa-
miliar with all of its parameters and characteristics and informed about necessary safety
requirements to prevent casualties.
Due to constant tractor development, some changes which are not specified in the present
manual can be introduced in the structure of certain units and parts.
Any arbitrary changes made by a consumer release the manufacturer from responsibility
for possible further injuries to the operator and a tractor breakdown.
Adopted abbreviations and conventional notations:
ADL – automatic differential lock;
AB – accumulator battery;
DL – differential lock;
RADL – rear axle differential lock;
PLU – pilot lamps unit;
FB – fuse block;
FC – fast coupling;
PTO – power takeoff shaft;
PRS – power reception shaft;
HSC – hydrostatic steering control;
HLL – hydraulic lift linkage;
HS – hydraulic system;
FFVS – frequency fuel volume sensor;
STM – shift-time maintenance;
RPTO – rear power take-off shaft;
SPTA – spare parts, tools and accessories;
RA – rear axle;
RLL – rear lift linkage;
II – integrated indicator;
GB – gearbox;
HPC – heating plugs controller;
MI – multifunction indicator;
MTU – machine and tractor unit;
CC – coupling clutch;
LL – lift linkage;
CL – coolant;
IAC – inlet air cooler;
FDA – front driving axle;
FPTO – front power take-off shaft;
FLL – front lift linkage;
VC – voltage converter;
FDAD – front driving axle drive;
CM – control module;
IICP – integrated indicator control module;
HPH – high pressure hoses;
HP – heating plugs;
SM – seasonal maintenance;
MS – maintenance service;
MS1 – maintenance service No1;
MS2 – maintenance service No2;
MS3 – maintenance service No3;
DH – drawbar hitch;
ECS – electronic control system;
EECS – engine electronic control system;
EE – electrical equipment.

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The manufacturer uses standard international symbols regarding application of instru-
ments and control units.
Given below are the symbols with indication of their meanings.
see the manual;
control manipulations;
brake;
fast;
handbrake;
slowly;
audible beep;
forward;
alarm signaling;
reverse;
fuel; accumulator charging;
coolant;
cab dome light;
heating plugs; parking lights;
engine speed; tractor turn indicator;
oil pressure in the engine;
tractor trailer turn indicator;
upper beam;
temperature of engine coolant;
low beam;
off / stop; working lights;
on / start;
differential lock;
gradual adjustment;
PTO engaged;

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front screen wiper; front driving axle drive;
rear screen wiper and washer; fan;
brake fluid level in main cylin-
der tanks;
air filter clogged;
oil pressure in HSC engine start;
beacon — road-train
oil pressure in gearbox — external cylinder – retracting
braking of gearbox — external cylinder – protracting
air pressure in pneumatic sys-
tem
— external cylinder – floating
— swivel lever – up engine stop
— swivel lever – down
lift linkage control system
— instruments lightening — instruments power supply
— power supply +12V — AB disconnection lock
— starter — starter lock
— front working headlights on
handrails and roof

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1 TRACTOR DESCRIPTION AND OPERATION
1.1 Tractor assignment
Tractor “BELARUS-1523.6” is intended for performance of various general–purpose agri-
cultural operations, primary cultivation and pre-sowing tillage, cereal and other crop sow-
ing if coupled with wide-span and multi-purpose mounted, semi-mounted and trailed ma-
chines and implements, for forage conservation, grain crop harvesting as well as for load-
ing-unloading and transportation work if combined with highly productive harvest com-
plexes.
Tractor “BELARUS-1523.6” is a general-purpose wheeled tractor of traction class 3 with
the wheel arrangement 4X4.
Physical configuration of tractor “BELARUS-1523.6” is shown in figure 1.1.1.
Physical configuration of tractor “BELARUS-1523.6” equipped with FPTO and FLL is
shown in figure 1.1.2.
Figure 1 1.1 – Basic configuration of tractor “BELARUS -1523.6»
Figure 1.1.2 – Tractor “BELARUS -1523.6» equipped with FLL and FPTO (for the rest see
figure 1.1.1)

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1.2 Technical specifications
Main parameters and specifications of tractor BELARUS -1523.6» are given in table 1.2.1.
Table 1.2.1
Parameter
(specification) designation
Parameter value for tractor
“BELARUS -1523.6”
1 Traction class according to GOST 27021 3
2 Rated traction force, kN 30
3 Engine 1)
а) model D-260.1S4
b) engine type 2) turbocharged with intercooling of inlet
air
c) number and arrangement of cylinders 2) six, in-line, vertical
d) cylinder displacement, l 2) 7,120
e) engine power, kW:
1) rated 2) 116,1
2) operating 112,4±2,0
f) crankshaft rated speed, rpm 2) 2100
g) specific fuel consumption at operating
power, g/(kW·h) 215±6,45
h) rated factor of torque backup, at least, %
2)
25
i) max torque, N·m 2)
660±20
4 Number of gears:
а) for forward travel 16 3)
b) for reverse travel 8 3)
5 Tractor travel speed (design) at crankshaft
rated speed, km/h:
a) for forward motion:
1) least 1,9 3)
2) highest 32,3
b) for backward motion:
1) least 2,9 3)
2) highest 15,5
6 Tractor weight, kg:
a) tare weight
b) operating with ballast
c)max operating
d) ex-works 4)
6050±100
6490±100
9000
6210±100
7 Distribution of operating weight on axles,
kg:
а) on front 2885±405)
b) on rear 3605±60 5)

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Table 1.2.1 continued
Parameter
(specification) designation
Parameter value for tractor
“BELARUS -1523.6”
8 Permissible load on axles, kN:
а) on front 40
b) on rear 60
9 Max weight of the trailer, kg
а) without brakes 2800
b) with independent brake 4500
c) with overrunning brake 12000
d) equipped with a brake system (trailer
brakes are interconnected with tractor
brakes)
25000
10 Road clearance, mm (on tires of basic
configuration), mm, at least: 380
11 Track dimensions (on tires of basic con-
figuration), mm:
а) for front wheels 1635±20 6), 1700±206),
1800±20, 1850±20, 1950±20, 2020±20, 2120 ±20
b) for rear wheels from 1650 to 1916 and from 1946 to 2445
12 Least radius of turning circle (with brak-
ing), m 5,5
13 Tractor base, mm 2760±30
14 Maximum fordable depth, m 0,85
15 Service life, years 12
16 Overall dimensions, mm:
a) length with loads and rear lift linkage in
transport position 5070±50
b) width along the ends of rear wheel semi-
axles 2250±10
c) cab height 3000±50
17 Tires (basic configuration):
а) front wheels 420/70R24
b) rear wheels 520/70R38
18 Electrical equipment according to GOST
3940:
а) rated supply voltage in on-board power
system, V
12
b) rated ignition voltage, V 24
19 Hydraulic system:
а) pump displacement under crankshaft
rated speed, l/min, at least
53
b) safety valve operating pressure, МPа20-2
c) nominal volume factor, at least 0,7

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Table 1.2.1 finished
Parameter
(specification) designation
Parameter value for tractor
“BELARUS -1523.6“
20 Operating equipment:
а) rear power take-off shaft: In subsection 3.2.7 “PTO use”
b) front power take-off shaft: In subsection 3.2.7 “PTO use”
c) rear lift linkage:
1) load-lifting capacity of rear lift linkage on
the suspension axle, kg, at least 6500
2) rear lift linkage lifting time from lower-
most to uppermost position with test load
on the suspension axle, s, at least
5
d) drawbar hitch: In section 4 “Coupling of implements”
_____________________________________________________________________
________________________________________
1) Engine parameters, not specified in table 1.2.1, shall comply with 260S4 – 0000100
OM document.
2) For referential use.
3) Without a creeper. Installation of a creeper against order provides additional four
speeds for forward travel and four speeds for the reverse.
4) To be specified depending on configuration.
5) With ballast mounted.
6) Tractor operation with this track is possible only with removed front wheel fenders. It
is allowed only for countries, where tractor operation with removed front wheel fenders
is permitted according to statutory acts.
Note – In Table 1.2.1 the number of gears and tractor travel speed at engine shaft rated
speed are specified for tractors BELARUS-1523.6 with installed GB 16х8 (basic configura-
tion). The number of gears and travel speed for tractors BELARUS-1523.6 with installed
GB 24х12 (custom design) are specified in subsection 2.27 “Gears and ranges shifting of
GB 24х12”.

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1.3 Tractor composition
Tractor framework is semi-frame.
Undercarriage – front and rear wheels are driving, with pneumatic tires of low pressure.
Front wheels are steering. Rear wheels can be twinned by means of a spacer.
The tractor is equipped with a 4-stroke piston six-cylinder inner combustion engine with in-
line vertical arrangement of cylinders, with direct injection of diesel fuel and compression
ignition, corresponding to environmental requirements of Stage 3B.
The system of engine lubrication is combined, some parts are lubricated under pressure,
some – by spattering. The lubrication system consists of an oil sump, oil pump, liquid-oil
heat exchanger, centrifugal oil filter and oil filter with paper filtering element.
The engine fuel supply system consists of the following parts:
- accumulator system of fuel supply Common RAIL, including a high-pressure fuel pump,
injectors, a fuel accumulator under high pressure, sensors of the engine working environ-
ment condition (pressure and temperature of fuel and air), electromagnetic actuating
mechanisms (fuel governor, electromagnetic injection valves), electronic unit of control and
communication check circuits, low-pressure pipelines, high-pressure pipelines;
- fuel fine filters;
- fuel coarse filters.
The system of engine start-up is an electric starter. A means of start-up facilitation under
low environmental temperatures are heating plugs.
The system of air delivery consists of a turbocharger, an air pipeline and a system of inlet
air cooling.
The turbocharger is executed as follows: a radial centripetal turbine and a centrifugal sin-
gle-stage compressor with a cantilever arrangement of wheels in relation to supports.
The system of air purification is equipped with dry air cleaner, having two purification sys-
tems, with two paper filtering elements.
The cooling system for inlet air is of a radiator type. The CAC radiator is intended for cool-
ing the air, charged into the inlet collector.
The cooling system is closed-type with coolant compulsory circulation carried out by a cen-
trifugal pump. The water pump is driven by a V-belt from the crankshaft pulley. Two ther-
mostats TC-107 mounted at the delivery line are provided for acceleration of engine warm-
ing-up after start-up and for automatic control of a temperature mode at various loadings
and ambient temperatures.
Two systems of selective catalytic reduction (SCR1, SCR2) are additionally installed in
the exhaust system to provide a required chemical composition of exhaust gases under
Stage 4.
The coupling clutch is frictional, dry, two-disk, spring-loaded. The clutch pads are asbestos
free. The coupling control drive is hydrostatic with a hydraulic booster.
The gearbox is 16х8, mechanical, step-by-step, with constant-mesh gears. Shifting of
gears within the ranges is carried out by means of synchro-mesh units; switching between
ranges is carried out by toothed clutches.
Against order it is possible to install GB 24x12.
Rear axle:
with the main drive – a pair of bevel pinions with circular teeth;
with the hub drive – a pair of cylindrical gears;
with final drives – of planetary type;
with a differential – with mechanical blocking, and electrohydraulic control.

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Brakes: service brakes are multi-disk, oil-lubricated, located on drive pinion shafts of hub
drive; the parking brake is independent, manually controlled. It is possible to mount dry-
friction brakes. The trailer brake control drive can be either double-line pneumatic, or hy-
draulic, interlocked with tractor operating brakes control. Against order it is possible not to
install the trailer brake pneumatic drive on the tractor – tires are inflated through a valve of
the pneumatic compressor.
The rear power take-off shaft on tractors with GB 16x8 is continuous two-speed and
ground-speed with smooth start.
The rear power take-off shaft on tractors with GB 24x12 is continuous four-speed and
ground-speed with smooth start, having two modes – standard and economic.
The direction of rotation is clockwise as viewed from the side of the shaft end extension
butt end.
The first variant of supply:
The tractor is equipped with PTO 3 shaft end extension (20 splines) according to GOST
3480. PTO 1c shaft end extension (8 splines) according to GOST 3480 and PTO 2 shaft
end extension (21 splines) according to GOST 3480 and ISO500 are included into tractor
SPTA.
The second variant of supply:
The tractor is equipped with PTO 2 (21 splines) according to GOST 3480 and ISO500.
PTO 1 (6 splines) according to ISO500 and PTO 3 shaft end extension (20 splines) ac-
cording to ISO500 are included into tractor SPTA.
Front PTO (against order) is continuous, one-speed. PTO 2 shaft end extension (21 teeth)
complies with GOST 3480. The direction of rotation is clockwise as viewed from the side of
the shaft end extension butt end.
The transmission hydraulic system provides the following:
- switching of GB reduction unit passes, RPTO drive, FPTO drive (optional), FDA drive,
differential lock;
- filtration of transmission oil;
- pressure feed lubrication of gearbox bearings, RA planetary gear reducer, FDA bearings;
- operation of the clutch hydraulic booster.
The steering is hydrostatic. The feed pump is gear-type, the direction of rotation is left. The
dosing pump is gerotor-type, with open center, without respond on the steering wheel. The
type of rotation mechanism is two hydraulic cylinders (TS50x200) of bidirectional action
and a steering linkage.
The front driving axle is portal-frame with dismountable tubes, with planetary-cylindrical
final gears. The main drive is a pair of bevel gears with circular teeth. The differential is
self-locked, with increased friction. The FDA is driven from the gearbox through the fric-
tional hydraulically-operated clutch and the crankshaft. The FDA control is electro-
hydraulic.
The hydraulic lift linkage is remote-cylinder, providing draft, position and combined adjust-
ment of tillage depth of agricultural machinery, and suppression of vertical oscillation of
agricultural implements in traveling position; with electrohydraulic system (HER) of rear lift
linkage automatic control. The system has three pairs of independent outlets.
Free drain is available at the back for tractor operation with hydraulic units with constant
delivery, for example, with hydraulic motors.
The rear lift linkage is a three-point linkage of category 3 under ISO 730 and a linkage 3
under GOST 10677. There are two cylinders TS90x250.
Bushings are included into tractor SPTA to provide an opportunity for coupling of imple-
ments of category 2 according to ISO 730 and lift linkage 2 according to 10677 to RLL.
The front lift linkage (against order) is a three-point linkage of category 2 under ISO 730
and a linkage 2 according to GOST 10677. There are two cylinders TS90x250.

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Drawbar hitches of a lift type:
- short towing yoke DH 2V – for coupling with semi-trailers and semi-trailed implements;
- long towing yoke DH 3V – for coupling with trailers and trailed implements;
- pin DH-2R (“Piton”) – for coupling with semi-trailers and semi-trailed machines (against
order);
- towing bar DH-1M-01 –for coupling with semi-trailed and trailed agricultural machines
(against order);
- cross member DH-1 – for coupling with trailed and semi-trailed machines (against order).
Drawbar hitches of lift type, which can be bought and mounted on tractors BELARUS-
1523.6 by customer itself are as follows:
- coupling clevis KU2000/329NB33 or KU5410/329-33 (produced by the company
“Walterscheid”) with spherical ball – for coupling with trailers and semi-trailers and agricultural
machineson trailers and semitrailers base;
- coupling Piton-Fix type PB5329NNB33 (produced by the company “Walterscheid’)
– for coupling with agricultural machines, having on hitch bar a tail-piece with loop;
- coupling ball type KI8329NB33 and KB8329NB33 (produced by the company
“Walterscheid”) – for coupling with agricultural machines, having on hitch bar an tail-piece
with spherical seat;
With MTW consent the customer can buy and mount on the tractor coupling clev-
ises, coupling “Piton-Fix” and coupling balls of other manufacturers, if their parameters
and coupling dimensions correspond to parameters and coupling dimensions set forth in
respective tables 4.4.6, 4.4.7, 4.4.8, 4.4.9, 4.4.10 of subsection 4.4. “Drawbar hitches”.
The cabin is a one-seated with a protective rigid framework, having thermal, noise and vi-
bration insulation, equipped with a sprung seat adjustable for operator's height and weight,
with rear-view mirrors, with a sun visor, with electrical wipers for front and rear screens,
with front and rear screen washers, with a roof lamp and a place to install a radio set, with
a system of heating and ventilation (against order – additional air-conditioning). Against
order the tractor can be equipped with an additional seat. The cab doors have got locks,
there are keys for the left door. The right door is for emergency exit. The cab complies with
category 2 under EN 15695-1:2009.
The electrical equipment complies with GOST 3940. The rated power supply voltage for
on-board network is 12V. The rated voltage for the start-up is 24V.
Instruments are a combination of devices; they are an integrated indicator; informational
display; pilot lamps (glow lamps and light emitting diodes), located on the block of pilot
lamps, on the control panel of the rear axle differential lock, PTO and FDA drive, on the
engine control system board.

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1.4 Vibration level at the operator's working place of the tractor “BELARUS -1523.6»
Vibration level at the operator's seat complies with the Council Directive 78/764/ЕEС. Val-
ues for vibration level are given in the EU type approval on each type of a seat.
1.5 Noise level at the operator's working place of the tractor “BELARUS -1523.6»
Noise level at the operator's workplace conforms to Directive 2009/76/ЕС, Appendix 2, and
does not exceed the value 86 dB (A). External noise level conforms to Directive
2009/63/ЕС and does not exceed the value 89 dB (A).
1.6 Tractor and its component marking
A metal nameplate is fixed at the rear of the cab on the right side, as shown in figure 1.6.1.
Additionally the tractor serial number is applied by means of percussion on the right side
member and duplicated on the right plate of the front ballast weight.
Figure 1.6.1 – The place of the tractor nameplate application
Engine number and numbers of its components are given in engine operation manual.
Nameplate for tractors ex-
ported to countries not in-
cluded into the EU
Nameplate for tractors ex-
ported to countries included
into the EU

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Numbers of tractor components are given in table 1.6.1.
Table 1.6.1 – Numbers of tractor components
Number of clutch casing
(to the left along the tractor
movement)
Number of gear box
(to the left along the tractor
movement)
Transmission and rear axle
serial number (on front
lower pad on the right side
of rear axle housing)
FDA number
(on the tube of the bar in
front)
Cab serial number
FDA serial number
Gearbox
version
number
FDA version number
Serial number
Serial number
Serial numbe
r
GB
RA
Clutch assembly
version number
Housing
Version number

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2 CONTROLS AND INSTRUMENTS
2.1 Layout of controls and instruments of the tractor
Controls and instruments located in the tractor cab are shown in figure 2.1.1.
Figure 2.1.1 – Tractor controls and instruments