Belarus 1221.6 User manual

BELARUS
1221.6
1221.6-0000010 OM
OPERATOR’S MANUAL
2014

1221.6-0000010 OM
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 1221.6
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-1221.6”.
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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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-1221.6”....................18
1.5 Noise level at the operator's working place of the tractor “BELARUS-1221.6” .................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 instrument board.......................................................................................21
2.3 Upper shield unit of button switches and rear wiper switch..........................................23
2.4 Cab heater and fan control ..........................................................................................24
2.5 Conditioner control.......................................................................................................25
2.5.1 Conditioner control in conditioning mode ..................................................................25
2.5.2 Conditioner control in a heating mode ......................................................................25
2.5.3 Cab ventilation ..........................................................................................................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 ......................................................................................................31
2.8.1 General information ..................................................................................................31
2.8.2 Assignment and operation principle of integrated indicator gauges..........................31
2.8.3 Pilot lamps of the integrated indicator .......................................................................34
2.8.4 Description of testing the indicator performance.......................................................35
2.8.5 Programming panel of integrated indicator ...............................................................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 information
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............................................................................................................41
2.14 Switching of ranges and gears of gearbox 16х8 .................................................................42
2.14.1 General information ................................................................................................42
2.14.2 Tractor velocity diagram with GB 16x8 ...................................................................42
2.15 Control panel for rear axle DL, FDA drive and front PTO. ..................................................43
2.15.1 General information ................................................................................................43
2.15.2 Rear axle DL control ...............................................................................................43
2.15.3 Front driving axle (FDA) drive control .....................................................................44
2.16 Rear and front power take-off shaft control ......................................................................44
2.16.1 Handle to shift between the continuous and ground-speed drives of rear PTO .....44
2.16.2 Rear power take-off shaft engagement ...................................................................45
2.16.3 Two-speed continuous drive of rear PTO switch.....................................................45
2.16.4 Tractor operation without use of rear PTO ..............................................................46
2.16.5 Front power take-off engagement...........................................................................46

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2.17 Rear lift linkage control with hydraulic lift ...................................................................46
2.17.1 RLL control elements with hydraulic lift...................................................................46
2.17.2 General information about control rules for RLL with hydraulic lift ..........................47
2.18 HLL pump control.......................................................................................................48
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 or RS213Mita installed by means of levers............................................................49
2.19.2 Control of remote hydraulic cylinders with distribution valve RP70-622 installed by
means of joystick and lever ................................................................................................50
2.20 Cutout fuses...............................................................................................................51
2.20.1 General information ................................................................................................51
2.20.2 Fuses for electrical equipment system....................................................................51
2.20.3 Fuses for electronic systems to control DL and FDA and PTO..............................54
2.20.4 Fuse for engine electronic control system...............................................................55
2.21 Cab locks and handles...............................................................................................57
2.21.1 Cab door locks........................................................................................................57
2.21.2 Left-side window opening .......................................................................................57
2.21.3 Rear window opening .............................................................................................58
2.21.4 Cab roof opening ....................................................................................................58
2.21.5 Cab emergency exits ..............................................................................................58
2.22 Seat and its adjustments............................................................................................58
2.22.1 General information ................................................................................................58
2.22.2 Adjustments of BELARUS seat...............................................................................59
2.22.3 Adjustments of Grammer seat ................................................................................60
2.23 Controlling drive of transmission hydraulic system pump ..........................................61
2.24 Controlling pneumatic system compressor ................................................................61
2.25 Connector elements of the electrical equipment ........................................................62
2.25.1 Socket to connect coupled agricultural equipment .......................................................62
2.25.2 Connection of additional electrical equipment of coupled machines ...............................62
2.26 Creeper control ..........................................................................................................63
2.26.1 Creeper control on tractors with GB16x8. ...............................................................63
2.26.2 Creeper control on tractors with GB 24x12 .............................................................64
2.27 Gears and ranges shifting of GB 24х12............................................................................64
2.28 Control of rear lift linkage with electrohydraulic control system..................................66
2.28.1 General information on control rules of rear lift linkage
with electrohydraulic control system ..................................................................................66
2.28.2 RLL control panel....................................................................................................66
2.28.3 Remote buttons of RLL control system ...................................................................68
2.28.4 Troubleshooting of RLL electronic control system ..................................................69
2.29 Fuel tank ....................................................................................................................70
2.30 SCR system operation ...............................................................................................70
2.30.1 Tank for SCR system liquid ....................................................................................70
2.30.2 Indication of SCR system operation........................................................................71
3 INTENDED USE OF TRACTOR.....................................................................................74
3.1 Safety measures to be taken preparing tractor for operation .......................................74
3.2 Tractor use...................................................................................................................75
3.2.1 Boarding the tractor ..................................................................................................75
3.2.2 Preparing for start and starting the engine................................................................75
3.2.3 Tractor motion start, GB shifting ...............................................................................77
3.2.4 Tractor stop...............................................................................................................78
3.2.5 Engine stop...............................................................................................................78
3.2.6 Leaving the tractor ....................................................................................................79

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3.2.7 PTO use....................................................................................................................79
3.2.8 Selection of optimal inner pressure in tires depending on operational conditions and
load on tractor axles ..........................................................................................................81
3.2.8.1 Selection of optimal inner pressure in tires depending on operational conditions
and load on tractor axles....................................................................................................81
3.2.8.2 Tire inflation ...........................................................................................................82
3.2.9 Rear wheel track formation .......................................................................................83
3.2.10 Rear wheel twinning................................................................................................84
3.2.11 Front wheel track formation ....................................................................................85
3.3 Safety measures to be taken when operating the tractor.............................................87
3.3.1 General safety measures to be taken when operating the tractor.............................87
3.3.2 Fire safety measures ................................................................................................90
3.4 Tractor final assembly and run-in.................................................................................91
3.4.1 Tractor final assembly...............................................................................................91
3.4.2 Technical maintenance before tractor run-in.............................................................91
3.4.3 Tractor run-in ............................................................................................................91
3.4.4 Technical maintenance during tractor run-in.............................................................92
3.4.5 Technical maintenance after tractor run-in................................................................92
3.5 Emergency actions ......................................................................................................93
4 COUPLING OF IMPLEMENTS.......................................................................................94
4.1 General information .....................................................................................................94
4.2 Types of implements coupled with tractor “BELARUS-1221.6”....................................95
4.3 Rear lift linkage ...........................................................................................................96
4.3.1 General information ..................................................................................................96
4.3.2 Three-point rear lift linkage .......................................................................................96
4.3.3 RLL components adjustment rules .........................................................................100
4.3.3.1 Buckles ................................................................................................................100
4.3.3.2 Lifting rod .............................................................................................................101
4.3.3.3 Upper link.............................................................................................................102
4.3.4 Attachment of implements to a tractor ....................................................................102
4.4 Drawbar hitches.........................................................................................................103
4.4.1 General information ................................................................................................103
4.4.2 Drawbar hitch DH-2V (short towing yoke)...............................................................104
4.4.3 Drawbar hitch DH-ЗV (long towing yoke)................................................................105
4.4.4 Drawbar hitch DH-2R (python)................................................................................106
4.4.5 Drawbar hitch DH-1М-01 (draw bar) .......................................................................107
4.4.6 Drawbar hitch DH -1 (crossbeam)...........................................................................108
4.4.7 Automatic coupling clevis KU2000/329NB33 and automatic coupling clevis
KU5410/329-33................................................................................................................109
4.4.8 Piton-Fix coupling PB5329NNB33 .........................................................................111
4.4.9 Coupling balls KI8329NB33 and KB8329NB33 ......................................................113
4.5 Usage patterns of tractor hydraulic system for driving of operated parts and other
elements of unitized hydraulically operated machines and aggregates ...........................116
4.6 Front ballast weight..................................................................................................118
4.7 Trailer brake actuator.................................................................................................119
4.7.1 General information ................................................................................................119
4.7.2 Double-line pneumatic drive of trailer brakes..........................................................119
4.7.3 Single-line pneumatic drive of trailer brakes ...........................................................120
4.7.4 Hydraulic drive of trailer brakes ..............................................................................121
4.7.4.1 General information .............................................................................................121
4.7.4.2 Adjustment of hydraulic actuator of trailer brakes ................................................122
4.8 Determination of PTO shaft and cardan shaft applicability ........................................123

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4.9 Features of application of PTO shafts and cardan shafts ..........................................123
4.10 Ways of changing of drawbar features and passing ability of the tractors ......................127
4.11 Features of the tractor application in special conditions...........................................128
4.11.1 Tractor operation in areas with rugged topography. .............................................128
4.11.2 Application of substances for the purpose of chemical treatment .........................128
4.11.3 Operation in a forest .............................................................................................128
4.12 Finding of total weight, loads on the front and rear axles, tires holding capacity and
required minimum ballast.................................................................................................129
4.13 Possibility of front loader installation ........................................................................131
4.13.1 General information ..............................................................................................131
4.13.2 Safety measures at tractor “BELARUS-1221.6” operation with loader installed ...133
4.13.3 Information about mounting holes of tractor..........................................................135
4.14 Three-point front lift linkage .....................................................................................137
4.14.1 General information about the device ...................................................................137
4.14.2 The rules of agricultural implements coupling to FLL...........................................139
4.14.3 Rules of shifting FLL from operating position to transport position ......................140
5 MAINTENANCE............................................................................................................141
5.1 General instructions...................................................................................................141
5.2 Providing access to the components for maintenance services .........................................143
5.3 Maintenance procedure .............................................................................................145
5.4 Scheduled maintenance servicing operations............................................................148
5.4.1 Maintenance on a shift basis (SBMS) in every 8 – 10 hours of
operation or per shift........................................................................................................148
5.4.2 Maintenance services in every 125 hours of operation ...........................................156
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 inconsistent with
intervals of MS-1, 2MS-1, MS-2, MS-3 and special MS...................................................160
5.4.3.1 General instructions .............................................................................................160
5.4.3.2 Operation 32. Check/adjustment of clearances in steering joints ........................160
5.4.3.3 Operation 33. Check and adjustment of wheels toe-in.........................................161
5.4.3.4 Operation 43. Check / adjustment of clutch pedal free travel...................................162
5.4.3.5 Operation 47. Check / adjustment of service brake control..................................163
5.4.3.6 Operation 48. Check / adjustment of parking brake control .................................164
5.4.4 General maintenance services ...............................................................................165
5.4.4.1 General guidelines ...............................................................................................165
5.4.4.2 Operation 78. Adjustment of valves of GB driven centrifuge................................165
5.4.4.3 Operation 79. Maintenance of engine air cleaner ................................................166
5.5 Seasonal maintenance services ................................................................................168
5.6 Safety measures during maintenance and repair operations.....................................169
5.6.1 General safety requirements...................................................................................169
5.6.2 Safety precautions for exclusion of hazardous situations, related to
an accumulator battery and a fuel tank............................................................................169
5.6.3 Guidelines for safe use of leveling jacks and statement of places
where they shall be installed............................................................................................170
5.7 Instruments, work tools and measuring devices while maintenance
services and repair ...........................................................................................................172
5.8 Filling and lubrication of the tractor with fuel and lubrication materials ......................173
6. POSSIBLE MALFUNCTIONS AND GUIDELINES FOR TROUBLESHOOTING 178
7 TRACTOR STORAGE..................................................................................................189
7.1 General instructions...................................................................................................189
7.2 Requirements for inter-shift storage of machines ......................................................189

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7.3 Requirements for short-term tractors storage ............................................................189
7.4 Requirements for outdoors long-term storage ...........................................................190
7.5 Preservation...............................................................................................................191
7.6 Depreservation and represervation............................................................................191
7.7 Putting tractor into operation after long-term storage.................................................191
7.8 Safety requirements for preservation.........................................................................192
8. TRACTOR TOWING....................................................................................................192
Service bulletins……………………………………………………………………………… 193

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Introduction
The present manual is designed for studying the structure, operation rules and mainte-
nance of tractors “BELARUS-1221.6”.
Scrutinize this manual and operator’s manual of the engine 260S4-0000100 OM, at-
tached 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 responsibil-
ity for possible further injuries to the operator and 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;
SPTA – spare parts, tools and accessories;
RA – rear axle;
RLL – rear lift linkage;
II – integrated indicator;
GB – gearbox;
HPC – heating plugs controller;
MTU – machine and tractor unit;
CC – coupling clutch;
LL – lift linkage;
IAH – inlet air heater;
FDA – front driving axle;
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;
—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;
—upper beam;
—temperature of engine cool-
ant;
—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