This manual includes information on how to operate, repair, service and maintain the machine on our own without wasting time in service Centre. It consists of step-by-step instructions with diagrams and illustrations.

Topics in the Case 21E, 121E, 221E, 321E Series 3 Wheel Loader Service Manual:

INTRODUCTION
SAFETY INSTRUCTIONS
TECHNICAL SPECIFICATIONS

ENGINE
DIESEL ENGINE SERVICE AND OVERHAUL
FUEL SYSTEM
COOLING SYSTEM
LUBRICATION SYSTEM

FRONT AXLES
REMOVAL AND INSTALLATION
DIMENSIONS
TECHNICAL SPECIFICATIONS
OIL CHANGE AND GREASING
DISASSEMBLY AND ASSEMBLY
BRAKE DISC ASSY
BRAKE CALIPER
EPICYCLIC REDUCTION GEAR ASSY (21E)
EPICYCLIC REDUCTION GEAR ASSY (121E, 221E, 321E)
WHEEL HUB ASSY (21E)
WHEEL HUB ASSY (121E, 221E, 321E)
WHEEL SHAFT ASSY (121E, 221E, 321E)
BRAKE AND WHEEL SHAFT ASSY (121E, 221E, 321E HIGH SPEED)
DIFFERENTIAL SUPPORT ASSY
DIFFERENTIAL ASSY
PINION ASSY
TROUBLESHOOTING
SPECIAL TOOLS

REAR AXLES
REMOVAL AND INSTALLATION
DIMENSIONS
TECHNICAL SPECIFICATIONS
OIL CHANGE AND GREASING
DISASSEMBLY AND ASSEMBLY
HYDRAULIC MOTOR ASSY TB150
HYDRAULIC MOTOR ASSY TB138.5 HIGH SPEED
TRANSMISSION BOX ASSY TB150
TRANSMISSION BOX ASSY TB138.5 HIGH SPEED
EPICYCLIC REDUCTION GEAR ASSY (21E)
EPICYCLIC REDUCTION GEAR ASSY (121E, 221E, 321E)
WHEEL HUB ASSY (21E)
WHEEL HUB ASSY (121E, 221E, 321E)
WHEEL SHAFT ASSY (121E, 221E, 321E)
DIFFERENTIAL SUPPORT ASSY
DIFFERENTIAL ASSY
LIMITED SLIP DIFFERENTIAL ASSY
PINION ASSY
TROUBLESHOOTING
SPECIAL TOOLS

BRAKES SYSTEM
BRAKES SYSTEM DIAGRAM
OPERATION
SERVICE BRAKE
PARKING BRAKE
BRAKE PEDAL VALVE
ADJUSTMENTS
TROUBLESHOOTING
ACCUMULATORS
BRAKE ACCUMULATOR
PUMP ACCUMULATOR
MAINTENANCE
TROUBLESHOOTING

HYDRAULIC SYSTEM
HYDRAULIC DIAGRAMS
TRANSMISSION HYDRAULIC SYSTEM
PISTON PUMP AT VARIABLE DISPLACEMENT
GEAR PUMP
PRIORITY VALVE
HYDRAULIC MOTOR
ONE-WAY DISTRIBUTOR VALVE
HYDRAULIC OIL TANK
TROUBLESHOOTING

ARTICULATED JOINT

STEERING SYSTEM
STEERING SYSTEM DIAGRAM
OPERATION
ADJUSTMENTS
POWER STEERING
TECHNICAL SPECIFICATIONS
HYDRAULIC DIAGRAM
COMPONENTS
DISASSEMBLY AND ASSEMBLY
TROUBLESHOOTING
SPECIAL TOOLS
STEERING CYLINDER
REMOVAL AND INSTALLATION
DISASSEMBLY
TROUBLESHOOTING

HEATING AND AIR CONDITIONING SYSTEM
HEATING
AIR CONDITIONING
TROUBLESHOOTING

ELECTRICAL SYSTEM
ELECTRICAL DIAGRAMS
FUSES AND RELAYS
VOLTAGE AND CONTINUITY CHECK
BATTERY
BULBS
TROUBLESHOOTING

WORKING EQUIPMENT
HYDRAULIC DIAGRAM
OPERATION
REMOVAL AND INSTALLATION
QUICK TOOL COUPLER
BUCKET
LIFTING FORKS
CYLINDERS
LIFTING CYLINDER
DUMPING CYLINDER
CONTROL VALVE
LOAD HOLDING VALVE
TROUBLESHOOTING