Case 21E 121E 221E 321E Series 3 Compact Wheel Loaders Service Manual 87734636C – PDF DOWNLOAD

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Case 21E 121E 221E 321E Series 3 Compact Wheel Loaders Service Manual 87734636C – PDF DOWNLOAD

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DESCRIPTION:

Case 21E 121E 221E 321E Series 3 Compact Wheel Loaders Service Manual 87734636C – 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 authorization. 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 Series 3 Compact Wheel Loaders Service Manual 87734636C – PDF DOWNLOAD

SECTION 00 – INTRODUCTION
1 SAFETY INSTRUCTIONS 1
1 GENERAL SAFETY INSTRUCTIONS 2
1 TECHNICAL SPECIFICATIONS 12
SECTION 10 – ENGINE
1 DIESEL ENGINE 1
2 FUEL SYSTEM 2
3 COLD START DEVICE (NORTH AMERICA) 5
SECTION 25 – FRONT AXLES
1 REMOVAL AND INSTALLATION 1
2 DIMENSIONS 4
3 TECHNICAL SPECIFICATIONS 5
4 OIL CHANGE 10
5 DISASSEMBLY AND ASSEMBLY 13
5 1 DISC BRAKE ASSY (21E) 13
5 2 BRAKE CALIPER 20
5 3 REDUCTION GEAR (21E) 25
5 4 REDUCTION GEAR (121E, 221E, 321E) 28
5 5 WHEEL HUB (21E) 31
5 6 WHEEL HUB (121E, 221E, 321E) 40
5 7 WHEEL SHAFT (121E, 221E, 321E) 46
5 8 BRAKE AND WHEEL SHAFT (121E, 221E, 321E “STANDARD” and “HIGH SPEED”) 50
5 9 DIFFERENTIAL SUPPORT 58
5 10 DIFFERENTIAL ASSY 66
5 11 PINION 73
6 TROUBLESHOOTING 79
7 SPECIAL TOOLS 82
SECTION 27 – REAR AXLES
1 REMOVAL AND INSTALLATION 1
2 DIMENSIONS 3
3 TECHNICAL SPECIFICATIONS 7
4 OIL CHANGE 14
5 DISASSEMBLY AND ASSEMBLY 18
5 1 MOTOR TB150 18
5 2 MOTOR TB138 5 “HIGH SPEED” 21
5 3 TRANSMISSION BOX TB150 25
5 4 TRANSMISSION TB138 5 “HIGH SPEED” 34
5 5 REDUCTION GEAR (21E) 54
5 6 REDUCTION UNIT (121E, 221E, 321E) 57
INDEX
5 7 WHEEL HUB (21E) 61
5 8 WHEEL HUB (121E, 221E, 321E) 70
5 9 WHEEL SHAFT (121E, 221E, 321E) 76
5 10 DIFFERENTIAL SUPPORT 80
5 11 DIFFERENTIAL ASSY 88
5 12 LIMITED SLIP DIFFERENTIAL ASSY 94
5 13 PINION 101
6 TROUBLESHOOTING 107
7 SPECIAL TOOLS 110
SECTION 33 – BRAKE SYSTEM
1 BRAKE SYSTEM DIAGRAM 1
1 1 STANDARD DIAGRAM (21E) 1
1 2 “HIGH SPEED” DIAGRAM (121E, 221E, 321E) 2
2 TECHNICAL SPECIFICATIONS 3
2 1 BRAKE PEDAL VALVE 3
2 2 PRESSURE SWITCHES 3
3 OPERATION 4
3 1 SERVICE BRAKE OPERATION 6
3 2 PARKING BRAKE OPERATION 8
4 BRAKE PEDAL VALVE 9
5 PRESSURE SWITCHES 11
6 BRAKE ACCUMULATOR 12
6 1 TECHNICAL SPECIFICATIONS 12
7 CHECKS AND ADJUSTMENTS 13
7 1 SERVICE BRAKE SYSTEM PRESSURE CHECK 13
7 2 ACCUMULATOR PRESSURE CHECK 14
7 3 PEDAL ANGLE ADJUSTMENT 15
7 4 “INCHING” VALVE ADJUSTMENT 16
8 TROUBLESHOOTING 17
SECTION 35 – HYDRAULIC SYSTEM
1 HYDRAULIC DIAGRAMS 1
1 1 HYDRAULIC DIAGRAM FOR 21E 1
1 2 HYDRAULIC DIAGRAM FOR 21E WITH OPTIONAL OUTFITS 3
1 3 HYDRAULIC DIAGRAM FOR 121E 5
1 4 HYDRAULIC DIAGRAM FOR 121E WITH OPTIONAL OUTFITS 7
1 5 HYDRAULIC DIAGRAM FOR 221E 9
1 6 HYDRAULIC DIAGRAM FOR 221E WITH OPTIONAL OUTFITS 11
1 7 HYDRAULIC DIAGRAM FOR 321E 13
1 8 HYDRAULIC DIAGRAM FOR 321E WITH OPTIONAL OUTFITS 15
2 TRANSMISSION 17
2 1 HYDRAULIC DIAGRAM 17
2 2 OPERATION 18
2 3 ADJUSTMENTS 20
3 VARIABLE-DISPLACEMENT PISTON PUMP 22
3 1 TECHNICAL SPECIFICATIONS 23
3 2 MAIN VALVES 24
INDEX
3 3 DISASSEMBLY 32
3 4 ASSEMBLY 51
4 GEAR PUMP 58
4 1 TECHNICAL SPECIFICATIONS 58
4 2 COMPONENTS 59
4 3 DISASSEMBLY AND ASSEMBLY 60
5 PRIORITY VALVE 63
5 1 TECHNICAL SPECIFICATIONS 63
6 TRAVEL MOTOR 64
6 1 TECHNICAL SPECIFICATIONS 64
6 2 MAIN COMPONENTS 66
6 3 OPERATION 67
6 4 REMOVAL 70
6 5 DISASSEMBLY AND ASSEMBLY 71
7 ONE-WAY DISTRIBUTOR VALVE 85
8 HYDRAULIC OIL TANK 86
8 1 OIL FILTER 87
9 TROUBLESHOOTING 88
SECTION 39 – FRAME
1 ARTICULATED JOINT 1
1 1 COMPONENTS 1
1 2 DISASSEMBLY AND ASSEMBLY 2
SECTION 41 – STEERING SYSTEM
1 OPERATION 1
1 1 EMERGENCY STEERING 3
1 2 PRESSURE ADJUSTMENT 4
2 POWER STEERING 5
2 1 TECHNICAL SPECIFICATIONS 6
2 2 COMPONENTS 7
2 3 DISASSEMBLY AND ASSEMBLY 8
2 4 TROUBLESHOOTING 24
2 5 SPECIAL TOOLS 25
3 STEERING CYLINDER 26
3 1 REMOVAL AND INSTALLATION 27
3 2 DISASSEMBLY 29
4 TROUBLESHOOTING 34
SECTION 50 – HEATING AND AIR CONDITIONING SYSTEM
1 HEATING 1
2 AIR CONDITIONING 3
3 TROUBLESHOOTING 29
INDEX
SECTION 55 – ELECTRICAL SYSTEM
1 ELECTRICAL DIAGRAMS 1
2 FUSES AND RELAYS 17
3 VOLTAGE AND CONTINUITY CHECK 20
4 BATTERY 21
4 1 REPLACEMENT 24
5 BULBS 25
6 TROUBLESHOOTING 29
SECTION 82 – WORKING EQUIPMENT
1 HYDRAULIC DIAGRAM 2
2 OPERATION 3
3 REMOVAL AND INSTALLATION 4
4 QUICK TOOL COUPLER 6
4 1 COMPONENTS 7
4 2 QUICK TOOL COUPLER CYLINDERS 8
5 BUCKET 9
5 1 ASSEMBLY 9
5 2 DISASSEMBLY 10
5 3 BUCKET TEETH – REPLACEMENT 11
6 FORKS 12
6 1 DISASSEMBLY AND ASSEMBLY 13
6 2 CHECKS 14
7 CYLINDERS 16
7 1 BOOM CYLINDER 16
7 2 DUMPING CYLINDER 20
8 CONTROL VALVE 24
9 LOAD HOLDING VALVE 27
9 1 TECHNICAL SPECIFICATIONS 27
10 TROUBLESHOOTING 28

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PLEASE NOTE:

• This is the SAME manual used by the dealers to troubleshoot any faults in your vehicle. This can be yours in 2 minutes after the payment is made.
• Contact us at [email protected] should you have any queries before your purchase or that you need any other service / repair / parts operators manual.

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