Case 21E, 121E Series 3 Compact Wheel Loader Service Repair Manual 87734636C

This is an Original factory Service And Repair Manual for Case 21E, 121E, 221E, 321E Series 3 Compact Wheel Loader . Contains High Quality Images, Circuit Diagrams and Instructions to Help You to Service And Repair Your Machine. This Manual Can Be Used By Anyone From A First Time Owner/Amateur To A Professional Technician. All Manuals Are Printable, without restrictions, contains Searchable Text and bookmarks.

Part No: 87734636C

Models Covered:
Case 21E, 121E, 221E, 321E Series 3 Compact Wheel Loader

Manual Contents:
ECTION 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)………………………………………… 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
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

Pages: 489
Language: English
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