BELARUS 1221.2/1221В.2/1221.3/1221.4 DISASSEMBLY-ASSEMBLY MANUAL – PDF

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 13
3 3 Dismounting of SAC, Mounted on Tractors BELARUS-1221 4 with Engine MMZ 21
3 4 Dismounting of 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 and DEUTZ 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
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
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 Adjustment 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 Testing 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 Control Mounted on Tractors BELARUS-1221 2/1221 3/1221 4 with Engine MMZ 197
7 1 1 Disassembly-Assembly of Units of the Hydrostatic Steering Control Mounted on Tractors BELARUS-1221 4 with Engine DEUTZ 201
7 1 2 Disassembly-Assembly of Units of the Hydrostatic Steering Control Mounted 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 and DEUTZ 260
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 on Tractors 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