Case 21E 121E 221E 321E Compact Wheel Loader Repair Manual 87630260 – PDF DOWNLOAD

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Case 21E 121E 221E 321E Compact Wheel Loader Repair Manual 87630260 – PDF DOWNLOAD

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Case 21E 121E 221E 321E Compact Wheel Loader Repair Manual 87630260 – PDF DOWNLOAD

GENERAL SAFETY INSTRUCTIONS :

Carefully read this Manual before proceeding with maintenance, repairs, refuelling or other machine operations. Repairs have to be carried out only by authorized and instructed staff; specific precautions have to be taken when grinding, welding or when using mallets or heavy hammers.

• Not authorized persons are not allowed to repair or carry out maintenance on this machine. Do not carry out any work on the equipment without prior authorisation.
• Ask your employer about the safety instructions in force and safety equipment. Nobody is allowed to seat on the operator’s place during machine maintenance unless he is a qualified operator helping with the maintenance work. If it is necessary to move the equipment to carry out repairs or maintenance, do not lift or lower the equipment from any other position than the operator’s seat.
• Never carry out any operation on the machine when the engine is running, except when specifically indicated. Stop the engine and ensure that all pressure is relieved from hydraulic circuits before removing caps, covers, valves, etc. All repair and maintenance operations should be carried out with the greatest care and attention.
• Service stairs and platforms used in a workshop or in the field should be built in compliance with the safety rules in force. Any functional disorders, especially those affecting the safety of the machine, should therefore be rectified immediately.

TABLE OF CONTENTS:

Case 21E 121E 221E 321E Compact Wheel Loader Repair Manual 87630260 – PDF DOWNLOAD

SECTION 00 – INTRODUCTION
1 SAFETY INSTRUCTIONS 1
2 TECHNICAL SPECIFICATIONS 11
SECTION 10 – ENGINE
1 DIESEL ENGINE 1
2 FUEL SYSTEM 2
SECTION 25 – FRONT AXLES
1 REMOVAL AND INSTALLATION 1
2 DIMENSIONS 3
3 TECHNICAL SPECIFICATIONS 4
4 OIL CHANGE AND GREASING 7
5 DISASSEMBLY AND ASSEMBLY 8
5 1 BRAKE DISC ASSY 8
5 2 BRAKE CALIPER 15
5 3 EPICYCLIC REDUCTION GEAR ASSY (21E) 23
5 4 EPICYCLIC REDUCTION GEAR ASSY (121E, 221E, 321E) 27
5 5 WHEEL HUB ASSY (21E) 31
5 6 WHEEL HUB ASSY (121E, 221E, 321E) 40
5 7 WHEEL SHAFT ASSY (121E, 221E, 321E) 46
5 8 BRAKE AND WHEEL SHAFT ASSY (121E, 221E, 321E HIGH SPEED) 50
5 9 DIFFERENTIAL SUPPORT ASSY 58
5 10 DIFFERENTIAL ASSY 66
5 11 PINION ASSY 73
6 TROUBLESHOOTING 80
7 SPECIAL TOOLS 83
SECTION 27 – REAR AXLES
1 REMOVAL AND INSTALLATION 1
2 DIMENSIONS 3
3 TECHNICAL SPECIFICATIONS 7
4 OIL CHANGE AND GREASING 13
5 DISASSEMBLY AND ASSEMBLY 14
5 1 HYDRAULIC MOTOR ASSY TB150 14
5 2 HYDRAULIC MOTOR ASSY TB138 5 HIGH SPEED 17
5 3 TRANSMISSION BOX ASSY TB150 21
5 4 TRANSMISSION BOX ASSY TB138 5 HIGH SPEED 30
5 5 EPICYCLIC REDUCTION GEAR ASSY (21E) 51
5 6 EPICYCLIC REDUCTION GEAR ASSY (121E, 221E, 321E) 55
5 7 WHEEL HUB ASSY (21E) 59
5 8 WHEEL HUB ASSY (121E, 221E, 321E) 68
5 9 WHEEL SHAFT ASSY (121E, 221E, 321E) 74
5 10 DIFFERENTIAL SUPPORT ASSY 78
5 11 DIFFERENTIAL ASSY 87
5 12 LIMITED SLIP DIFFERENTIAL ASSY 94
5 13 PINION ASSY 101
6 TROUBLESHOOTING 108
7 SPECIAL TOOLS 112
SECTION 33 – BRAKES SYSTEM
1 BRAKES SYSTEM DIAGRAM 1
2 OPERATION 2
2 1 SERVICE BRAKE 4
2 2 PARKING BRAKE 6
3 BRAKE PEDAL VALVE 7
3 1 ADJUSTMENTS 10
3 2 TROUBLESHOOTING 13
4 ACCUMULATORS 14
4 1 BRAKE ACCUMULATOR 14
4 2 PUMP ACCUMULATOR 15
4 3 MAINTENANCE 16
5 TROUBLESHOOTING 18
SECTION 35 – HYDRAULIC SYSTEM
1 HYDRAULIC DIAGRAMS 1
1 1 21E HYDRAULIC DIAGRAM 1
1 2 21E HYDRAULIC DIAGRAM WITH OPTIONAL OUTFITS 3
1 3 121E HYDRAULIC DIAGRAM 5
1 4 121E HYDRAULIC DIAGRAM WITH OPTIONAL OUTFITS 7
1 5 221E BASIC MODEL HYDRAULIC DIAGRAM 9
1 6 221E HYDRAULIC DIAGRAM WITH OPTIONAL OUTFITS 11
1 7 321E HYDRAULIC DIAGRAM 13
1 8 321E HYDRAULIC DIAGRAM WITH OPTIONAL OUTFITS 15
2 TRANSMISSION HYDRAULIC SYSTEM 17
3 PISTON PUMP AT VARIABLE DISPLACEMENT 24
4 GEAR PUMP 60
5 PRIORITY VALVE 65
6 HYDRAULIC MOTOR 66
7 ONE-WAY DISTRIBUTOR VALVE 85
8 HYDRAULIC OIL TANK 86
9 TROUBLESHOOTING 88
SECTION 39 – FRAME
1 ARTICULATED JOINT 1
SECTION 41 – STEERING SYSTEM
1 STEERING SYSTEM DIAGRAM 1
2 OPERATION 2
3 ADJUSTMENTS 3
4 POWER STEERING 4
4 1 TECHNICAL SPECIFICATIONS 5
4 2 HYDRAULIC DIAGRAM 5
4 3 COMPONENTS 6
4 4 DISASSEMBLY AND ASSEMBLY 7
4 5 TROUBLESHOOTING 24
4 6 SPECIAL TOOLS 25
5 STEERING CYLINDER 26
5 1 REMOVAL AND INSTALLATION 27
5 2 DISASSEMBLY 29
6 TROUBLESHOOTING 34
SECTION 50 – HEATING AND AIR CONDITIONING SYSTEM
1 HEATING 1
2 AIR CONDITIONING 3
3 TROUBLESHOOTING 30
SECTION 55 – ELECTRICAL SYSTEM
1 ELECTRICAL DIAGRAMS 1
2 FUSES AND RELAYS 16
3 VOLTAGE AND CONTINUITY CHECK 18
4 BATTERY 19
5 BULBS 22
6 TROUBLESHOOTING 26
SECTION 82 – WORKING EQUIPMENT
1 HYDRAULIC DIAGRAM 2
2 OPERATION 3
3 REMOVAL AND INSTALLATION 4
4 QUICK TOOL COUPLER 6
5 BUCKET 10
6 LIFTING FORKS 14
7 CYLINDERS 18
7 1 LIFTING CYLINDER 18
7 2 DUMPING CYLINDER 22
8 CONTROL VALVE 26
9 LOAD HOLDING VALVE 29
10 TROUBLESHOOTING 30

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