Case 21E 121E 221E 321E Series 3 Compact Wheel Loaders Service Repair Manual

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
52 BRAKE CALIPER 20
53 REDUCTION GEAR (21E) 25
5

4 REDUCTION GEAR (121E 221E 321E) 28
55 WHEEL HUB (21E) 31
56 WHEEL HUB (121E 221E 321E) 40
5

7 WHEEL SHAFT (121E 221E 321E) 46
58 BRAKE AND WHEEL SHAFT (121E 221E 321E STANDARD and HIGH SPEED) 50
59 DIFFERENTIAL SUPPORT 58
5

10 DIFFERENTIAL ASSY 66
511 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
51 MOTOR TB150 18
52 MOTOR TB138

5 HIGH SPEED 21
53 TRANSMISSION BOX TB150 25
54 TRANSMISSION TB1385 HIGH SPEED

34
55 REDUCTION GEAR (21E) 54
56 REDUCTION UNIT (121E 221E 321E) 57

7 WHEEL HUB (21E) 61
58 WHEEL HUB (121E 221E 321E) 70
59 WHEEL SHAFT (121E 221E 321E) 76
5

10 DIFFERENTIAL SUPPORT 80
511 DIFFERENTIAL ASSY 88
512 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
11 STANDARD DIAGRAM (21E) 1
1

2 HIGH SPEED DIAGRAM (121E 221E 321E) 2
2 TECHNICAL SPECIFICATIONS 3
21 BRAKE PEDAL VALVE

3
22 PRESSURE SWITCHES 3
3 OPERATION 4
3

1 SERVICE BRAKE OPERATION 6
32 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
71 SERVICE BRAKE SYSTEM PRESSURE CHECK 13
7

2 ACCUMULATOR PRESSURE CHECK 14
73 PEDAL ANGLE ADJUSTMENT 15
74 INCHING VALVE ADJUSTMENT 16
8

TROUBLESHOOTING 17
SECTION 35 HYDRAULIC SYSTEM
1 HYDRAULIC DIAGRAMS

1
11 HYDRAULIC DIAGRAM FOR 21E 1
12 HYDRAULIC DIAGRAM FOR 21E WITH OPTIONAL OUTFITS 3
13 HYDRAULIC DIAGRAM FOR 121E

5
14 HYDRAULIC DIAGRAM FOR 121E WITH OPTIONAL OUTFITS 7
15 HYDRAULIC DIAGRAM FOR 221E 9
16 HYDRAULIC DIAGRAM FOR 221E WITH OPTIONAL OUTFITS 11
1

7 HYDRAULIC DIAGRAM FOR 321E 13
18 HYDRAULIC DIAGRAM FOR 321E WITH OPTIONAL OUTFITS 15
2 TRANSMISSION

17
21 HYDRAULIC DIAGRAM 17
22 OPERATION 18
23 ADJUSTMENTS

20
3 VARIABLE-DISPLACEMENT PISTON PUMP 22
31 TECHNICAL SPECIFICATIONS 23
32 MAIN VALVES 24

3 DISASSEMBLY 32
34 ASSEMBLY 51
4 GEAR PUMP

58
41 TECHNICAL SPECIFICATIONS 58
42 COMPONENTS 59
4

3 DISASSEMBLY AND ASSEMBLY 60
5 PRIORITY VALVE 63
51 TECHNICAL SPECIFICATIONS 63
6

TRAVEL MOTOR 64
61 TECHNICAL SPECIFICATIONS 64
62 MAIN COMPONENTS 66
6

3 OPERATION 67
64 REMOVAL 70
6

5 DISASSEMBLY AND ASSEMBLY 71
7 ONE-WAY DISTRIBUTOR VALVE 85
8 HYDRAULIC OIL TANK

86
81 OIL FILTER 87
9 TROUBLESHOOTING 88
SECTION 39 FRAME
1

ARTICULATED JOINT 1
11 COMPONENTS 1
1

2 DISASSEMBLY AND ASSEMBLY 2
SECTION 41 STEERING SYSTEM
1 OPERATION 1
1

1 EMERGENCY STEERING 3
12 PRESSURE ADJUSTMENT 4
2 POWER STEERING

5
21 TECHNICAL SPECIFICATIONS 6
22 COMPONENTS 7
23 DISASSEMBLY AND ASSEMBLY

8
24 TROUBLESHOOTING 24
25 SPECIAL TOOLS 25
3 STEERING CYLINDER

26
31 REMOVAL AND INSTALLATION 27
32 DISASSEMBLY 29
4 TROUBLESHOOTING

34
SECTION 50 HEATING AND AIR CONDITIONING SYSTEM
1 HEATING 1
2 AIR CONDITIONING

3
3 TROUBLESHOOTING 29

FUSES AND RELAYS 17
3 VOLTAGE AND CONTINUITY CHECK 20
4 BATTERY

21
41 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
41 COMPONENTS 7
42 QUICK TOOL COUPLER CYLINDERS

8
5 BUCKET 9
51 ASSEMBLY 9
5

2 DISASSEMBLY 10
53 BUCKET TEETH REPLACEMENT 11
6 FORKS

12
61 DISASSEMBLY AND ASSEMBLY 13
62 CHECKS 14
7

CYLINDERS 16
71 BOOM CYLINDER 16
72 DUMPING CYLINDER 20
8

CONTROL VALVE 24
9 LOAD HOLDING VALVE 27
91 TECHNICAL SPECIFICATIONS 27
10

TROUBLESHOOTING 28