Belarus 1220.6 User manual

BELARUS
1220.6
1220.6-0000010 OM
OPERATOR’S MANUAL
2016

The operator's manual was composed by an engineer of the first Department of
Constructive and Experimental Works (DCEW), Y.A. Soroka, 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 – Y.N.Kozlovsky, head of DCEW-1.
Editor-in-chief – N.I. Zezetko, chief designer of tractor production of OJSC “MTW”.
Operator's manual contains brief description and specifications of tractors Belarus 1220.6
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 servicing of tractors
BELARUS-1220.6.
In view of OJSC “MTW” policy directed to constant upgrading of produced goods, the con-
struction 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 or on www.belarus-tractor.com.
© OJSC Minsk Tractor Works, 2016
All rights reserved. No part of this book may be reproduced in any form without written
permission of OJSC MTW.

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3
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-1220.6”................. 17
1.5 Noise level at the operator's working place of the tractor “BELARUS-1220.6”........... 17
1.6 Tractor and its component marking......................................................................... 17
2 CONTROLS AND INSTRUMENTS............................................................................ 19
2.1 Layout of controls and instruments of the tractor.................................................... 19
2.2 Switches of instrument board.................................................................................. 20
2.3 Upper shield unit of button switches and rear wiper switch.....................................22
2.4 Cab heater and fan control...................................................................................... 23
2.5 Conditioner control.................................................................................................. 24
2.5.1 Conditioner control in conditioning mode............................................................. 24
2.5.2 Conditioner control in a heating mode................................................................. 25
2.5.3 Cab ventilation..................................................................................................... 25
2.6 Instrument board..................................................................................................... 26
2.7 Pilot lamps unit........................................................................................................ 28
2.7.1 General information.............................................................................................. 28
2.7.2 Functioning algorithm of pilot lamp to indicate operation of heating plugs........... 29
2.8 Integrated indicator and II control panel.................................................................. 30
2.8.1 General information.............................................................................................. 30
2.8.2 Assignment and operation principle of integrated indicator gauges..................... 30
2.8.3 Pilot lamps of the integrated indicator.................................................................. 34
2.8.4 Description of testing the indicator performance.................................................. 34
2.8.5 The Intergrated Indicator Programming Method.................................................. 35
2.9 Engine control panel................................................................................................... 37
2.9.1 General information.............................................................................................. 37
2.9.2 Information display............................................................................................... 37
2.9.2.1 General information........................................................................................... 37
2.9.2.2 Adjustment of brightness and sharpness of the information display................. 38
2.9.2.3 Call up of changeable images and parameters on the screen of the infor-
mation display............................................................................................................... 38
2.10 Steering................................................................................................................. 41
2.10.1 General information............................................................................................ 41
2.10.2 Steering wheel adjustments............................................................................... 41
2.11 Parking brake control............................................................................................ 41
2.12 Handle for fuel feed manual control...................................................................... 41
2.13 Tractor pedals....................................................................................................... 42
2.14 Switching of ranges and gears of gearbox...................................................................................... 43
2.14.1 General information............................................................................................ 43
2.14.2 Tractor with GB16х8 velocity diagram............................................................... 43
2.15 Control of rear axle DL, FDA drive and rear PTO................................................................... 44
2.15.1 General information............................................................................................ 44
2.15.2 Rear axle DL control...........................................................................................44
2.15.3 Front driving axle (FDA) drive control................................................................ 45
2.16 Rear power take-off shaft control............................................................................................. 45
2.16.1 Lever shifting rear PTO from continuous drive to ground-speed drive.............................. 45
2.16.2 Rear power take-off shaft engagement.............................................................. 45
2.16.3 Two-speed continuous drive of rear PTO switch................................................ 46

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2.16.4 Tractor operation without use of rear PTO......................................................... 46
2.17 Rear lift linkage control.......................................................................................... 47
2.17.1 RLL control elements......................................................................................... 47
2.17.2 General information about RLL control rules......................................................47
2.18 HLL pump control.................................................................................................. 49
2.19 Hydraulic lift linkage distribution valve sections (remote cylinders) control............. 49
2.19.1 Сontrol of remote hydraulic cylinders with distribution valve RP70-1221 or
RP70-1221.1 installed by means of levers.................................................................... 49
2.19.2 Control of remote hydraulic cylinders with distribution valve RP70-622 or
RS213Mita installed by means of joystick and lever........................................................ 51
2.20 Cutout fuses.......................................................................................................... 53
2.20.1 General information............................................................................................ 53
2.20.2 Fuses for electrical equipment system............................................................... 53
2.20.3 Fuses for electronic systems to control rear axle DL, FDA, RPTO, GB and
RLL reduction gears...................................................................................................... 54
2.20.4 Fuse for engine electronic control system (EECS).............................................55
2.21 Cab locks and handles.......................................................................................... 58
2.21.1 Cab door locks................................................................................................... 58
2.21.2 Left-side window opening................................................................................... 58
2.21.3 Rear window opening......................................................................................... 59
2.21.4 Cab roof opening................................................................................................ 59
2.21.5 Cab emergency exits..........................................................................................59
2.22 Seat and its adjustments....................................................................................... 59
2.23 Controlling drive of transmission hydraulic system pump..................................... 62
2.24 Controlling pneumatic system compressor........................................................... 62
2.25 Connector elements of the electrical equipment................................................... 63
2.25.1 Socket to connect coupled agricultural equipment......................................................... 63
2.25.2 Connection of coupled machines electrical equipment through socket block... 63
2.25.3 Additional connection options for electrical equipment of coupled machines................ 64
2.26 Creeper control...................................................................................................... 65
2.26.1 Creeper control on tractors with GB16х8........................................................... 65
2.26.2 Creeper control on tractors with GB 24x12........................................................ 66
2.27 Gears and ranges shifting of GB 24х12....................................................................... 66
2.28 Control of rear lift linkage with electrohydraulic control system.............................68
2.28.1 General information on control rules of rear lift linkage with electro hydraulic
control system............................................................................................................... 68
2.28.2 RLL control panel............................................................................................... 68
2.28.3 Remote buttons of RLL control system.............................................................. 70
2.28.4 Troubleshooting of RLL electronic control system............................................. 71
2.29 SCR system operation.......................................................................................... 72
2.29.1 SCR system liquid tank...................................................................................... 72
2.29.2 SCR system operation Indication....................................................................... 72
3 INTENDED USE OF TRACTOR................................................................................ 76
3.1 Safety measures to be taken preparing tractor for operation.................................. 76
3.2 Tractor use.............................................................................................................. 77
3.2.1 Boarding the tractor.............................................................................................. 77
3.2.2 Preparing for start and starting the engine........................................................... 77
3.2.3 Tractor motion start, GB shifting...........................................................................78
3.2.4 Tractor stop.......................................................................................................... 80

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3.2.5 Engine stop.......................................................................................................... 80
3.2.6 Leaving the tractor............................................................................................... 81
3.2.7 PTO use............................................................................................................... 81
3.2.8 Selection of optimal inner pressure in tires depending on operational conditions
and load on tractor axles............................................................................................... 83
3.2.8.1 Selection of optimal inner pressure in tires depending on operational condi-
tions and load on tractor axles...................................................................................... 83
3.2.8.2 Tire inflation....................................................................................................... 85
3.2.9 Rear wheel track formation.................................................................................. 86
3.2.10 Rear wheel twinning........................................................................................... 87
3.2.11 Front wheel track formation................................................................................ 88
3.3 Safety measures to be taken when operating the tractor........................................ 90
3.3.1 General safety measures to be taken when operating the tractor........................90
3.3.2 Fire safety measures............................................................................................ 93
3.4 Tractor final assembly and run-in............................................................................ 94
3.4.1 Tractor final assembly.......................................................................................... 94
3.4.2 Technical maintenance before tractor run-in........................................................ 94
3.4.3 Tractor run-in........................................................................................................ 94
3.4.4 Technical maintenance during tractor run-in........................................................ 95
3.4.5 Technical maintenance after tractor run-in........................................................... 95
3.5 Emergency actions.................................................................................................. 96
4 COUPLING OF IMPLEMENTS.................................................................................. 97
4.1 General information................................................................................................. 97
4.2 Types of implements coupled with tractor “BELARUS-1220.6”...............................98
4.3 Rear lift linkage........................................................................................................99
4.3.1 General information.............................................................................................. 99
4.3.2 Three-point rear lift linkage...................................................................................99
4.3.3 RLL components adjustment rules....................................................................... 103
4.3.3.1 Buckles.............................................................................................................. 103
4.3.3.2 Lifting rod...........................................................................................................104
4.3.3.3 Upper link.......................................................................................................... 105
4.3.4 Attachment of implements to a tractor..................................................................105
4.4 Drawbar hitches...................................................................................................... 106
4.4.1 General information.............................................................................................. 106
4.4.2 Fixed towing yoke (DH-2V).................................................................................. 107
4.4.3 Drawbar hitch rotary yoke (DH-ЗV)...................................................................... 108
4.4.4 “Python” drawbar hitch (DH-2R)........................................................................... 109
4.4.5 Drawbar hitch draw bar (DH-1М-01).................................................................... 110
4.4.6 Drawbar hitch crossbeam (DH -1)........................................................................ 111
4.4.7 Determining the maximum allowable load on tractor DH depending on the rear
tires standard size, applicable DH type and tractor travel speed.................................. 112
4.5 Usage patterns of tractor hydraulic system for driving of operated parts and other
elements of unitized hydraulically operated machines and aggregates........................ 113
4.6 Front ballast weight installation................................................................................... 114
4.7 Trailer brake actuator............................................................................................. 115
4.7.1 General information.............................................................................................. 115
4.7.2 Double-line pneumatic drive of trailer brakes....................................................... 115
4.7.3 Hydraulic drive of trailer brakes............................................................................ 116
4.7.3.1 General information........................................................................................... 116

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4.7.3.2 Adjustment of hydraulic actuator of trailer brakes............................................117
4.8 Determination of PTO shaft and cardan shaft applicability.................................... 118
4.9 Features of application of PTO shafts and cardan shafts...................................... 118
4.10 Ways of changing of drawbar features and passing ability of the tractors.................. 122
4.11 Features of the tractor application in special conditions...................................... 123
4.11.1 Tractor operation in areas with rugged topography.......................................... 123
4.11.2 Application of substances for the purpose of chemical treatment.................... 123
4.11.3 Operation in a forest......................................................................................... 123
4.12 Finding of total weight, loads on the front and rear axles, tires holding capacity
and required minimum ballast......................................................................................124
4.13 Possibility of front loader installation................................................................... 126
4.13.1 General information.......................................................................................... 126
4.13.2 Safety measures at tractor “BELARUS-1220.6” operation with loader in-
stalled....................................................................................................................... .128
4.13.3 Information about mounting holes of tracto
r
..................................................... 130
5 MAINTENANCE........................................................................................................132
5.1 General instructions.............................................................................................. 132
5.2 Providing access to the components for maintenance service
s
........................................... 134
5.3 Maintenance procedure......................................................................................... 135
5.4 Scheduled maintenance servicing operations....................................................... 138
5.4.1 Maintenance on a shift basis (SBMS) in every 8 – 10 hours of operation or per
shift.............................................................................................................................. 138
5.4.2 Maintenance services in every 125 hours of operation...................................... 145
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 is incon-
sistent with intervals of MS-1, 2MS-1, MS-2, MS-3 and special MS............................149
5.4.3.1 General instructions......................................................................................... 149
5.4.3.2 Operation 31. Check/adjustment of clearances in steering joints.................... 149
5.4.3.3 Operation 32. Check and adjustment of front wheels toe-in............................ 150
5.4.3.4 Operation 39. Check and adjustment of clutch pedal free travel..................... 151
5.4.3.5 Operation 42. Check / adjustment of service brake control............................. 152
5.4.3.6 Operation 43. Check / adjustment of parking brake control.............................153
5.4.4 General maintenance services........................................................................... 155
5.4.4.1 General guidelines........................................................................................... 155
5.4.4.2 Operation 68.
A
djustment of valves of GB driven cent
r
ifuge........................... 155
5.4.4.3 Operation 69. Adjustment of oil pressure in the engine lubrication system.... 156
5.4.4.4 Operation 70. Maintenance of engine air cleaner............................................ 157
5.5 Seasonal maintenance services............................................................................ 158
5.6 Safety measures during maintenance and repair operations................................ 159
5.6.1 General safety requirements.............................................................................. 159
5.6.2 Safety precautions for exclusion of hazardous situations, related to an accu-
mulator battery and a fuel tank.................................................................................... 159
5.6.3 Guidelines for safe use of leveling jacks and statement of places where they
shall be installed.......................................................................................................... 160
5.7 Instruments, work tools and measuring devices while maintenance services and
repai
r
............................................................................................................................... 162
5.8 Filling and lubrication of the tractor with fuel and lubrication materials................. 163
6. POSSIBLE MALFUNCTIONS
A
ND GUIDELINES FOR TROUBLESHOOTING... 169
6.1 Possible clutch failures and instructions for their troubleshooting......................... 169
6..2 Possible failures in the gearbox and instructions for their troubleshooting.......... 170

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6.3 Possible failures in the electronic control system for rear axle differential lock,
front driving axle drive, rear power take off shaft, GB reduction gear and instruc-
tions for their troubleshooting...................................................................................... 171
6.4 Possible failures in rear axle and instructions for their troubleshooting................ 173
6.5 Possible failures in rear power take-off shaft and instructions for their trouble-
shooting.................................................................................................... .................. 174
6.6 Possible failures of brakes and instructions for their troubleshooting.................... 175
6.7 Possible failures in the pneumatic system and instructions for their trouble-
shooting........................................................................................................... ........... 176
6.8 Possible failures of trailer brake hydraulic actuator and guidelines for trouble-
shooting........................................................................................................... ........... 178
6.9 Possible failures of the transmission hydraulic system and instructions for their
troubleshooting............................................................................................................ 179
6.10 Possible failures of FDA and instructions for their troubleshooting..................... 180
6.11 Possible failures of the hydrostatic steering control and instructions for their
troubleshooting............................................................................................................ 182
6.12 Possible failures in the HLL with a lift linkage and instructions for troubleshoot-
ing........................................................................................................... .................... 185
6.13 Possible failures in the HLL with RLL electronic control system and instruc-
tions for their troubleshooting...................................................................................... 187
6.13.1 Possible failures in the RLL electronic control system and instructions for
their troubleshooting.................................................................................................... 187
6.13.2 Possible failures of the hydraulic lift linkage and guidelines for troubleshoot-
ing........................................................................................................... .................... 192
6.14 Possible failures in the electrical equipment and instructions for their trouble-
shooting........................................................................................................... ........... 194
6.15 Possible failures of air-conditioning, air ventilation and cab heating systems
and instructions for troubleshooting............................................................................. 196
6.16 Possible engine failures and instructions on their troubleshooting...................... 197
7 TRACTOR STORAGE.............................................................................................. 198
7.1 General instructions............................................................................................... 198
7.2 Requirements for inte
r
-shift tractor storage of machines....................................... 198
7.3 Requirements for short-term tractor storage..........................................................198
7.4 Requirements for outdoors long-term tractor storage............................................ 199
7.5 Preservation...........................................................................................................200
7.6 Depreservation and represervation....................................................................... 200
7.7 Putting tractor into operation after long-term storage............................................ 201
7.8 Safety requirements for preservation.................................................................... 201
8. TRACTOR TRANSPORTATION AND TOWING..................................................... 201
Service bulletins...........................................................................................................203
ANNEX А(Сompulsory) – Electric circuit diagram of BELARUS-1220.6 engine
electronic control system............................................................................................. 204
ANNEX B (Сompulsory) – Electric circuit diagram of BELARUS-1220.6 with GB
16x8rear axle DL, FDA and rear PTO electronic control system................................. 205
ANNEX C (Compulsory) – Electric circuit diagram of BELARUS-1220.6 with GB
24x12 rear axle DL, FDA, reduction unit gears and rear PTO..................................... 206
ANNEX D (Compulsory) – Electric circuit diagram of BELARUS-
920.6/952.5/952.6/1021.5/1021.6/1025.5/1220.6/1220.5/1220.6/1221.5/1221.6
electrical equipment connections................................................................................ 207

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Introduction
The present manual is designed for studying the structure, operation rules and mainte-
nance of tractors “BELARUS-1220.6”.
Scrutinize this manual 245 S4-0000100 OM engine operation manual, attached to your
tractor. It will help you to study the rules of correct operation and maintenance.
Failure to follow this instruction can lead to operator's injury or a breakdown of a tractor.
Operation of a tractor, its maintenance and repair shall be carried out only by employ-
ees, familiar with all of its parameters and characteristics and informed about necessary safety
requirements to prevent casualties.
In connection with constant development of the tractor some changes, which are not
depicted 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 tractor breakdown. In addition, shall the consum-
er introduce any changes in the assembly units within the warranty period, the tractor war-
ranty will be automatically terminated.
Adopted abbreviations and conventional notations:
AB – accumulator battery;
DL – differential lock;
PLU – pilot lamps unit;
ECO – engine control unit;
PTO – power takeoff shaft;
PRS – power reception shaft;
HSC – hydrostatic steering control;
HLL – hydraulic lift linkage;
FLM – fuel and lubrication materials
FFVS – frequency fuel volume sensor;
STM – shift-time maintenance;
SPTA – spare parts, tools and accessories;
RA – rear axle;
RLL – rear lift linkage;
II – integrated indicator;
GB – gearbox;
MTU – machine and tractor unit;
CC – coupling clutch;
LL – lift linkage;
IAH – inlet air heater;
FDA – front driving axle;
VC – voltage converter;
CM – 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.
The manufacturer uses standard international symbols, regarding application of instru-
ments and control units.

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Given below are the symbols with indication of their meanings.
—see the manual ;
—control manipulations;
—brake;
—fast;
—manual brake;
—slowly;
—audible beep;
—forward;
—alarm signaling;
—reverse;
—fuel; —accumulator charging;
—coolant;
—cab roof light;
—heating plugs; —parking lights;
—engine speed;
—tractor turn indicator;
—oil pressure in the engine;
—trailer turn indicator;
—temperature of engine cool-
ant;
—upper beam;
—low beam;
—off / stop;
—working lights;
—on / start;
—differential lock;
—gradual adjustment; —PTO engaged;
—front screen wiper; —front driving axle drive;

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—rear screen wiper and washer; —fan;
—starter
—starter lock
—oil pressure in HSC
—engine start;
—beacon —road-train
—oil pressure in gearbox
— external cylinder – retracting
— air filter clogged
— external cylinder – protracting
—air pressure in pneumatic sys-
tem — external cylinder – floating
— swivel lever – up
—engine stop
— swivel lever – down
— front working headlights on
handrails and roof
— instruments lightening — instruments power supply
—power supply +12V — AB disconnection lock