Minsk Tractor Works Belarus 1221B.2 Quick start guide

BELARUS
1221.2/1221В.2
1221.3/1221.4
1221-0000010 РРС
DISASSEMBLY-ASSEMBLY MANUAL
Minsk Tractor Works 2010

Due to continual improvement of manufactured articles, design of some assembly
units and parts can be amended without being included in this publication.
Some technical data and figures given in this manual can differ from those actually
installed on your tractor. Overall dimensions and values of mass are approximate (for
reference purpose only). You can obtain more detailed information from your dealer of
trade mark BELARUS.
_______________________________________________________________________
Minsk Tractor Works RUE, 2010
All rights reserved. No part of this manual may be reproduced in any form
whatsoever without written permission of Minsk Tractor Works RUE.

Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4
2
CONTENTS
INTRODUCTION ...........................................................................................................................................................7
1 SAFETY REQUIREMENTS........................................................................................................................................8
2 GENERAL ................................................................................................................................................................10
3 DISMOUNTING AND MOUNTING OF ENGINE AND ITS SYSTEMS ....................................................................12
3.1 DISMOUNTING-MOUNTING OF ENGINES MMZ AND DEUTZ..........................................................................12
3.2 DISMOUNTING OF SUPERCHARGED AIR COOLER (SAC), MOUNTED ON TRACTORS BELARUS-1221.320
3.3 DISMOUNTING OF SUPERCHARGED AIR COOLER (SAC), MOUNTED ON TRACTORS BELARUS-1221.4
WITH ENGINE MMZ ...................................................................................................................................................21
3.4 DISMOUNTING OF SUPERCHARGED AIR COOLER (SAC), MOUNTED ON TRACTORS BELARUS-1221.4
WITH ENGINE DEUTZ................................................................................................................................................22
3.5 DISMOUNTING-MOUNTING OF COOLING SYSTEM MOUNTED ON TRACTORS BELARUS-1221.4 WITH
ENGINE MMZ..............................................................................................................................................................23
3.6 DISMOUNTING-MOUNTING OF COOLING SYSTEM MOUNTED ON TRACTORS BELARUS-1221.4 WITH
ENGINE DEUTZ..........................................................................................................................................................24
3.7 DISMOUNTING-MOUNTING OF COOLING SYSTEM MOUNTED ON TRACTORS BELARUS-
1221.2/1221В.2/1221.3 WITH ENGINE MMZ.............................................................................................................25
3.8 DISASSEMBLY-ASSEMBLY OF FUEL TANK 1221-1101500, MOUNTED ON TRACTORS BELARUS-
1221.2/1221В.2/1221.3/1221.4 WITH ENGINES MMZ AND DEUTZ, WITH TWO CYLINDERS OF LIFT LINKAGE
(HYDRAULIC LIFT OF THE HYDRAULIC SYSTEM).................................................................................................26
3.9 DISASSEMBLY-ASSEMBLY OF AIR PURIFIER UNIT MOUNTED ON TRACTORS BELARUS-
1221.2/1221В.2/1221.3/1221.4 (MMZ) .......................................................................................................................28
3.10 DISASSEMBLY-ASSEMBLY OF AIR PURIFIER UNIT MOUNTED ON TRACTORS BELARUS-1221.4 DEUTZ
.....................................................................................................................................................................................29
3.11 DISASSEMBLY-ASSEMBLY OF EXHAUST SYSTEM OF TRACTORS BELARUS-1221.4 .............................30
3.12 DISASSEMBLY-ASSEMBLY OF FUEL SUPPLY CONTROL MOUNTED ON TRACTORS BELARUS-1221В.2
.....................................................................................................................................................................................32
3.13 DISASSEMBLY-ASSEMBLY OF FUEL SUPPLY CONTROL, MOUNTED ON TRACTORS BELARUS-
1221.2/1221.3..............................................................................................................................................................34
3.14 DISASSEMBLY-ASSEMBLY OF FUEL SUPPLY CONTROL, MOUNTED ON TRACTORS BELARUS-1221.4
WITH ENGINES MMZ ИDEUTZ ................................................................................................................................36
4 TRANSMISSION ......................................................................................................................................................37
4.1 TRANSMISSION DISASSEMBLY (GENERAL PROVISIONS) ............................................................................39
4.2 UNIT-BY-UNIT DISASSEMBLY ............................................................................................................................39
4.2.1 DISCONNECTING ENGINE FROM TRANSMISSION (TRACTOR DISCONNECTION)..................................39
4.2.2 DISMOUNTING (DISCONNECTION) OF CLUTCH COUPLING BODY ...........................................................40
4.2.3 DISMOUNTING (DISCONNECTION) OF GEAR BOX BODY ...........................................................................42
4.2.4 TRANSMISSION ASSEMBLY............................................................................................................................43

Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4
3
4.3 CLUTCH ................................................................................................................................................................44
4.3.1 DISASSEMBLY-ASSEMBLY OF CLUTCH CONTROL UNITS BELARUS-1221.2/1221.3/1221.4...................44
4.3.1.1 DISASSEMBLY-ASSEMBLY OF CLUTCH CONTROL UNITS FOR BELARUS-1221В.2.............................45
4.3.2 DISASSEMBLY-ASSEMBLY OF CLUTCH COUPLING....................................................................................48
4.3.3 MOUNTING DISKS OF CLUTCH COUPLING ON ENGINE FLYWHEEL.........................................................51
4.3.4 ADJUSTING POSITION OF SQUEEZE LEVERS .............................................................................................51
4.3.5 REDUCTION GEAR SECTION OF CLUTCH COUPLING BODY.....................................................................53
4.3.6 DISASSEMBLY OF THE REDUCTION GEAR SECTION OF CLUTCH COUPLING BODY ............................54
4.3.7 ASSEMBLY OF CLUTCH COUPLING BODY ...................................................................................................65
4.4 GEAR BOX............................................................................................................................................................66
4.4.1 DISASSEMBLY OF GEAR BOX. DISMOUNTING GEAR BOX.........................................................................66
4.4.2 DISMOUNTING HYDRAULIC SYSTEM UNITS, GEARS’ ASSEMBLY AND GEAR SHIFTING YOKES .........67
4.4.3 DISASSEMBLY OF GEARS’ ASSEMBLY .........................................................................................................71
4.4.5 DISASSEMBLY OF REDUCED GEARS’ SHAFT..............................................................................................77
4.4.6 DISASSEMBLY OF GEAR TRAIN SHAFT ........................................................................................................80
4.4.7 DISASSEMBLY OF CONTROL MECHANISM ..................................................................................................84
4.4.8 ASSEMBLY OF GEAR BOX ..............................................................................................................................85
4.5 REAR AXLE ..........................................................................................................................................................87
4.5.1 DISASSEMBLY OF REAR AXLE.......................................................................................................................87
4.5.2 ASSEMBLY OF REAR AXLE.............................................................................................................................94
4.5.3 ADJUSTING REAR AXLE................................................................................................................................100
4.6 BRAKES ..............................................................................................................................................................104
4.6.1 DISMOUNTING OF PARKING AND RIGHT-SIDE FOOT BRAKE AS AN ASSEMBLY .................................105
4.6.2 DISASSEMBLY OF PARKING BRAKE............................................................................................................105
4.6.3 DISASSEMBLY OF LEVER FOR PARKING BRAKE CONTROL ...................................................................106
4.6.4 DISMOUNTING OF BRAKES’ LEVERS ..........................................................................................................107
4.6.5 DISMOUNTING OF CLUTCH OF DIFFERENTIAL INTERLOCK (DRY TYPE) ..............................................107
4.6.6 DISASSEMBLY OF DIFFERENTIAL INTERLOCK CLUTCH ..........................................................................108
4.6.7 DISMOUNTING OF LEFT-SIDE FOOT BRAKE ..............................................................................................109
4.6.8 DISASSEMBLY OF TWO-DISK FOOT BRAKE...............................................................................................109
4.6.9 DISASSEMBLY OF RIGHT-SIDE THREE-DISK BRAKE ................................................................................110
4.6.10 ASSEMBLY OF RIGHT-SIDE THREE-DISK BRAKE (DRY TYPE) ..............................................................111
4.6.11 ASSEMBLY OF LEFT-SIDE FOOT BRAKE AND DIFFERENTIAL INTERLOCK CLUTCH .........................112
4.6.12 ASSEMBLY OF PARKING BRAKE................................................................................................................112
4.6.13 ASSEMBLY OF PARKING BRAKE CONTROL LEVER ................................................................................114

Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4
4
4.6.14 ADJUSTMENT OF FOOT BRAKE, VALVE AND REGULATOR OF PNEUMATIC SYSTEM PRESSURE..115
4.6.15 ADJUSTMENT OF PARKING BRAKE, BRAKE VALVE AND REGULATOR OF PNEUMATIC SYSTEM
PRESSURE...............................................................................................................................................................116
4.6.16 MULTI-DISK FOOT AND PARKING BRAKES OPERATING IN OIL BATH ..................................................117
4.6.18 DISASSEMBLY OF LEFT-SIDE MULTI-DISK BRAKE OPERATING IN OIL BATH .....................................119
4.6.19 ASSEMBLY OF LEFT-SIDE BRAKE .............................................................................................................121
4.6.20 DISASSEMBLY OF RIGHT-SIDE FOOT BRAKE..........................................................................................126
4.6.21 ASSEMBLY OF RIGHT-SIDE FOOT BRAKE................................................................................................130
4.7 DISASSEMBLY-ASSEMBLY OF BRAKES CONTROL ON REVERSAL OF BELARUS-1221В.2.....................135
4.8 DISMOUNTING OF COMPONENTS OF ONE-WIRE PNEUMATIC DRIVE OF TRAILER BRAKES ON
TRACTORS BELARUS-1221.2/1221.3.....................................................................................................................138
4.9 DISMOUNTING OF COMPONENTS OF TWO-WIRE PNEUMATIC DRIVE OF TRAILER BRAKES ON
TRACTORS BELARUS-1221.2/1221.3.....................................................................................................................140
4.10 DISMOUNTING OF COMPONENTS OF COMBINED PNEUMATIC DRIVE OF TRAILER BRAKES FOR
TRACTOR BELARUS-1221.4 WITH ENGINE DEUTZ.............................................................................................142
4.11 DISMOUNTING OF COMPONENTS OF ONE-WIRE PNEUMATIC DRIVE OF TRAILER BRAKES FOR
TRACTOR BELARUS-1221.4 WITH ENGINE MMZ.................................................................................................145
4.12 DISMOUNTING OF COMPONENTS OF TWO-WIRE PNEUMATIC DRIVE OF TRAILER BRAKES .............147
4.13 DISASSEMBLY-ASSEMBLY OF REAR PTO...................................................................................................149
4.13.1 DISASSEMBLY-ASSEMBLY OF REAR PTO CONTROL .............................................................................159
4.13.2 ADUSTMENT OF PTO...................................................................................................................................162
5 FRONT DRIVING AXLE (FDA) ..............................................................................................................................164
5.1 DRIVE OF FRONT DRIVING AXLE....................................................................................................................164
5.1.1 DISASSEMBLY OF FDA DRIVE......................................................................................................................165
5.1.2 ASSEMBLY OF FDA DRIVE............................................................................................................................169
5.1.3 ADJUSTMENT AND TESING FDA DRIVE......................................................................................................172
5.2 DISASSEMBLY OF FDA WITH PLANETARY-CYLINDRICAL REDUCTION GEARS.......................................175
5.2.1 DISASSEMBLY OF FDA FINAL DRIVE...........................................................................................................175
5.2.2 ASSEMBLY AND ADJUSTMENT OPERATIONS ...........................................................................................179
5.3 DISASSEMBLY OF PLANETARY-CYLINDRICAL REDUCTION GEAR............................................................183
6 WHEELS AND HUBS.............................................................................................................................................194
6.1 MOUNTING-DISMOUNTING WORKS ON WHEEL DISMANTLED FROM TRACTOR.....................................194
6.2 DISMOUNTING REAR WHEEL AND HUB.........................................................................................................196
6.2.1 DISASSEMBLY-ASSEMBLY OF REAR WHEEL HUB....................................................................................196
7 STEERING .............................................................................................................................................................197
7.1 DISASSEMBLY-ASSEMBLY OF UNITS OF HYDROSTATIC STEERING CONTROLMOUNTED ON
TRACTORS BELARUS-1221.2/1221.3/1221.4 WITH ENGINE MMZ» ....................................................................197

Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4
5
7.1.1 DISASSEMBLY-ASSEMBLY OF UNITS OF THE HYDROSTATIC STEERING CONTROLMOUNTED ON
TRACTORS BELARUS-1221.4 WITH ENGINE DEUTZ» ........................................................................................201
7.1.2 DISASSEMBLY-ASSEMBLY OF UNITS OF THE HYDROSTATIC STEERING CONTROLMOUNTED ON
TRACTORS BELARUS-1221В.2 ..............................................................................................................................204
7.2 STEERING COLUMN..........................................................................................................................................207
7.2.1 DISASSEMBLY-ASSEMBLY OF STEERING COLUMN .................................................................................207
7.2.2 DISASSEMBLY-ASSEMBLY OF STEERING COLUMN OF THE REVERSE CONTROL STATION .............214
7.3 DISASSEMBLY OF STEERING ROD.................................................................................................................219
8 CABIN.....................................................................................................................................................................220
8.1 DISMOUNTING AND MOUNTING OF THE CABIN ...........................................................................................220
8.2 DISMOUNTING-MOUNTING OF FACIA OF TRACTOR BELARUS-1221.2/1221В.2 .......................................225
8.3 DISMOUNTING-MOUNTING FACIA OF TRACTORS BELARUS-1221.3/1221.4 .............................................226
8.4 DISASSEMBLY-ASSEMBLY OF FACIA PANELS OF THE RIGHT-SIDE PANEL ............................................228
8.5 DISASSEMBLY-ASSEMBLY OF PANELS 85-6702550 OF FRONT CABIN WALL ..........................................229
8.6 DISASSEMBLY-ASSEMBLY OF REAR WHEELS’ FENDERS ..........................................................................230
8.6.1 DISASSEMBLY-ASSEMBLY OF PLASTIC FENDERS OF TRACTORS’ REAR WHEELS............................230
8.6.2 DISASSEMBLY-ASSEMBLY OF METAL FENDERS OF TRACTORS’ REAR WHEELS...............................231
8.7 DISASSEMBLY-ASSEMBLY OF FRONT WHEELS’ FENDERS OF TRACTORS BELARUS-1221 AND
MODIFICATIONS ......................................................................................................................................................233
8.8 DISMOUNTING-MOUNTING OF AIR CONDITIONER (OPTION) MOUNTED ON TRACTORS BELARUS-
1221.3/1221.4............................................................................................................................................................234
8.9 CHECK AND ADJUSTMENT OF TENSION OF THE BELT OF AIR CONDITIONER COMPRESSOR DRIVE 237
9 HYDRAULIC HINGE SYSTEM ..............................................................................................................................239
9.1 DISASSEMBLY-ASSEMBLY OF HYDRAULIC HINGE UNITS. .........................................................................239
9.1.1 DISASSEMBLY-ASSEMBLY OF HYDRAULIC SYSTEM ASSEMBLIES........................................................246
9.2 DISASSEMBLY-ASSEMBLY OF REAR HINGE DEVICE (RHD) OF TRACTOR EQUIPPED WITH HYDRAULIC
HOIST........................................................................................................................................................................252
9.3 DISASSEMBLY-ASSEMBLY OF LIFTING TYPE TRACTIVE-DRAWING DEVICE (TDD) WITH HYDRAULIC
HOIST........................................................................................................................................................................254
10 DISASSEMBLY-ASSEMBLY OF SEMI-FRAME AND BALLAST ........................................................................257
10.1 DISASSEMBLY-ASSEMBLY OF SEMI-FRAME OF TRACTORS BELARUS-1221.2/1221В.2/1221.3/1221.4
...................................................................................................................................................................................257
10.2 DISASSEMBLY-ASSEMBLY OF BALLAST .....................................................................................................258
10.3 DISCONNECTION OF FRONT BEAM FROM ENGINE DEUTZ......................................................................259
11 ELECTRICAL EQUIPMENT.................................................................................................................................260
11.1 DISMOUNTING-MOUNTING OF ELEMENTS OF THE ELECTRICAL EQUIPMENT FOR ENGINES
MOUNTED ON TRACTORS BELARUS-1221.2/1221В.2/1221.3/1221.4 WITH ENGINES MMZ ИDEUTZ...........260

Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4
6
11.1.1 DISMOUNTING ELEMENTS OF ELECTRICAL EQUIPMENT OF ENGINE (MMZ) MOUNTED ON
TRACTORS BELARUS-1221.2/1221В.2 ..................................................................................................................261
11.1.2 DISMOUNTING ELECTRICAL EQUIPMENT ELEMENTS OF ENGINE (MMZ) MOUNTED ON TRACTORS
BELARUS-1221.3......................................................................................................................................................262
11.1.3 DISMOUNTING ELECTRICAL EQUIPMENT ELEMENTS OF ENGINES (MMZ OR DEUTZ) MOUNTED ON
TRACTORS BELARUS-1221.4.................................................................................................................................262
11.2 DISASSEMBLY-ASSEMBLY OF STORAGE BATTERY COMPARTMENT AND STARTING SYSTEM
ELEMENTS MOUNTED ON TRACTORS BELARUS-1221.2 ..................................................................................265
11.3 DISASSEMBLY-ASSEMBLY OF STORAGE BATTERY COMPARTMENT AND STARTING SYSTEM
ELEMENTS MOUNTED ON TRACTORS BELARUS-1221В.2/1221.3/1221.4 WITH ENGINES MMZ AND DEUTZ»
...................................................................................................................................................................................267
11.3.1 DISMOUNTING ELEMENTS OF STORAGE BATTERY COMPARTMENT..................................................267
11.4 DISMOUNTING-MOUNTING OF ELEMENTS OF TRANSMISSION ELECTRICAL EQUIPMENT .................269
11.5 CONTROL OF TRACTOR UNITS.....................................................................................................................272
11.5.1 CONTROL OF REAR HINGE DEVICE (RHD) 1221 – 8700610 MOUNTED ON TRACTORS BELARUS-
1221.2/1221В.2 .........................................................................................................................................................272
11.5.2 OPERATIONS TO BE PERFORMED WHEN DISMOUNTING/MOUNTING CABIN: ...................................273
11.6 CONTROL OF DI, FDA AND FRONT PTO 1221-8700210-Д(ELECTRICAL PART) MOUNTED ON
TRACTORS BELARUS-1221.3.................................................................................................................................278
11.7 CONTROL OF DI, FDA, PTO AND REDUCTION GEAR 1221-8700250-Д(ELECTRICAL PART) MOUNTED
ON TRACTORS BELARUS 1221.3 ..........................................................................................................................281
11.7.2 OPERATIONS TO BE MADE WHEN DISMOUNTING-MOUNTING THE CABIN:........................................283
11.8 CONTROL OF DI AND FDA, MMZ OR DEUTZ, (ELECTRICAL PART) MOUNTED ONTRACTORS BELARUS
1221.4........................................................................................................................................................................285
11.8.1 OPERATIONS TO BE PERFORMED WHEN REPLACING ENGINE: ..........................................................286
11.8.2 OPERATIONS TO BE MADE WHEN DISMOUNTING-MOUNTING THE CABIN:........................................287
11.9 CONTROL OF ENGINE DEUTZ 1221.4 – 8700910-Б, MOUNTED ON TRACTORS BELARUS 1221.4........289
11.9.1 OPERATIONS TO BE PERFORMED IN REPLACING ENGINE: .................................................................290
11.9.2 OPERATIONS TO BE PERFORMED WHEN DISMOUNTING/MOUNTING CABIN: ...................................290
11.10 CONTROL OF ENGINE MMZ 1221.4 – 8700910-М, MOUNTED ON TRACTORS BELARUS 1221.4.........291
11.10.1 OPERATIONS TO BE PERFORMED IN REPLACING ENGINE: ...............................................................292
11.10.2 OPERATIONS TO BE PERFORMED WHEN DISMOUNTING/MOUNTING CABIN: .................................292
11.11 DISMOUNTING-MOUNTING AND DISASSEMBLY-ASSEMBLY OF DASHBOARD ....................................293
11.11.1 DISMOUNTING-MOUNTING OF DASHBOARD 80-3805010-Д1 MOUNTED ON TRACTORS BELARUS-
1221.2/1221В.2 .........................................................................................................................................................293
11.11.2 DISMOUNTING OF DASHBOARD MOUNTED ON TRACTORS BELARUS-1221.3/1221.4 .....................297

Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4
7
INTRODUCTION
This manual contains procedure of disassembly-assembly of units and assemblies, data on
their design and operation, adjustment and technical characteristics of units of tractors
BELARUS 1221.2/1221В.2/1221.3/1221.4 with engines MMZ and Deutz. It is an indispensible
guide for maintenance personnel engaged in repair or maintenance.
To obtain exhaustive information about tractors use this manual, as well as “Operating
manual for tractor BELARUS 1221” and its modifications, enclosed with each tractor.
Data contained in this manual is accurate at the time of this manual compilation. As tractors
BELARUS are continually updated, Minsk Tractor Works PA reserves the right to introduce
design amendments without notifying the customers. All data given in this manual can be
amended, and illustrative materials can differ from those describing tractors currently
manufactured.
ATTENTION! Carefully study and strictly follow all directions given below in section "Safety
requirements".
Abbreviations used:
PTO – Power-take-off;
FPTO – Front power-take-off shaft;
FDA – Front driving axle;
GSB – Gear shifting box;
HHS – Hydraulic hinge system;
RHD – Rear hinge device;
FHD – Front hinge device;
HSC – Hydrostatic steering control;
SAC – Supercharged air cooler;
CC – Clutch coupling;
RA – Rear axle;
DI – Differential interlock;
TH – Trailer hitch;
SB – Storage battery.


Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4
8
1 SAFETY REQUIREMENTS
For your safety purpose carefully study this manual before starting maintenance and repair
works. Pay particular attention to all warnings and recommendations given in this manual.
Always consult operating and maintenance manual issued by the manufacturer.
1. Any equipment can present danger for personnel. Remember that careless steering or
wrong maintenance can be the source of danger both for an operator and his associates.
2. Strictly follow safety regulations in handling lifting and transport mechanisms. Tractor lifted
above the ground by means of lifting mechanisms and poorly fastened by ropes can fall down on
you. Before jacking one of the axles, put the tractor on hard even surface. Another axle must be
securely blocked with wedges (pads) put under wheels. Do not loll tractor against slag bricks,
hollow tiles or other supports that can collapse by tractor weight. Do not work under tractor lifted
only by jack, and observe all recommendations given in this manual.
3. Before starting to disassembly tractor into components, carefully clean adjacent assembly
units from dust, mud, oil and grease.
4. When disengaging power transmission constituents, use disengagement tool. Securely put
transmission constituents on supports and jacks. Do not rely solely on jacks to support tractor
when working under it: tractor can move from jacks and injure or maim you, unless wheels are
blocked with wedges on both sides. Always block front and rear wheels of tractor which must
always be jacked. Always place raised section of tractor on supports before starting any work.
5. Make sure tractor will remain immobile: shift gear in the gear box, engage parking brake,
shut down the engine and pull out key from starter switch and instruments. Disconnect storage
battery to rule out possibility of starting engine by someone else, while you are working under
tractor.
6. Wear suitable protective cloths (gloves, footwear, working cloths) and goggles.
7. Use serviceable and suitable tools. Self-made (provisional) tools and wrong work techniques
can result in dangerous situation. Use mechanical tools only for loosening fasteners. Use proper
size tools for tightening and loosening fittings. Do not use “inch system” tools for metric fasteners.
Avoid possibility of injuring caused by wrench slippage.
8. To avoid burns take care when draining hot oil from filling tanks of hydraulic system, power
transmission and FDA. Leaks of oil, lubricants, solvents and other liquids that can pollute
environment and be harmful for your health must be properly disposed in accordance with local
legislation and regulations.
9. Refill filling tanks and use only fuel, oils, lubricants and special liquids recommended by the
manufacturer according to annexes “Recommended oils, fuels, lubricants and special liquids” listed
in operating manuals for tractor and engine installed on it.
DO NOT USE OTHER LUBRICANTS!

Disassembly-assembly manual for tractor BELARUS-1221.2/1221В.2/1221.3/1221.4
9
10. For washing parts and assembly units use special washing agents.
When using kerosene or benzene for washing, observe fire safety regulations; make washing in
ventilated premises.
Keep tidy working place where dismounting-mounting works are underway.
11. When checking travel of foot brakes’ pedals, make sure travel of interlocked brakes’ pedals is
90-110 mm with effort of 600 N.
12. Make sure clutch pedal has free travel and reliably returns to initial position. Pedal hang-up in
intermediate positions and at free travel section is not allowed. Clutch must provide full
disengagement, smooth engagement and not slip during operation.
13. Upon completion of repair works related to transmission run-in the tractor for 30 hours at all
gears without load, or use for easy transport works.
ATTENTION! Remember that failure to follow above-listed recommendations can lead to major
injuries and will depreciate your work!