Product Description

The Case 621B and 721B service manual covers comprehensive service, repair and troubleshooting procedures for the wheel loader. This service manual has over 1,800 pages of technical information with illustrations for professional and DIY mechanics. View the service manual on your tablet, smartphone or computer and save time and money on repairs. This Case 621G, 721G Wheel Loader Service Manual contains detailed repair instructions and maintenance specifications to facilitate your repair and troubleshooting.

Case 721 Loader Wiring Drawings

Case 621d Parts Manual

Service manual includes full set of repair and technical service information, electrical wiring diagrams, disassembly and assembly instructions, fitting instructions for Wheel Loader Case 621D.
E-manual is very convenient, because it is designed to run on personal computers, supports English.
Electronic manual allows to troubleshoot and eliminate hardware conflicts.
This manual comes in PDF format. For work with manual you need to install any PDF Reader.
Service Manual covers:
General
Standard Torque Specifications
Fluids and Lubricants
Metric Conversion Chart
Loctite Product Chart
Engines
Engine and Radiator Removal and Installation
Engine and Radiator Removal and Installation P.I.N. JEE0135501 and Above
Stall Tests
For Engine Repair, See the Engine Service Manual
Fuel System
Section Index - Fuel System
For Fuel System Repair, See the Engine Service Manual
Electrical
Section Index - Electrical
Removal and Installation of Starter and Alternator
Electrical Specifications and Troubleshooting
Electrical Specifications and Troubleshooting P.I.N. JEE0135501 and Above
Batteries
Information and Diagnostic Center
Alternator - 65 Ampere
Alternator - 45 Ampere
Steering
Section Index - Steering
Removal and Installation of Steering Components
Steering Specifications, Pressure Checks, and Troubleshooting
Steering Control Valve
Steering Priority Valve
Steering Cylinders
Center Pivot
Auxiliary Steering Motor and Pump
Power Train
Removal and Installation of Power Train Components
Transmission Specifications, Pressure Checks, and Troubleshooting
Transmission
Front Axle
Rear Axle
Drive Shafts, Center Bearing, and Universal Joints
Wheels and Tires
Transmission Control Valve
Brakes
Section Index - Brakes
Removal and Installation of Brake Components
Hydraulic Brake Troubleshooting
Brake Accumulators
Parking Brake
NOTE: For parking brake and brake pedal adjustments, see Section 9001
Hydraulics
Section Index - Hydraulics
Removal and Installation of Hydraulic Components
Hydraulic Specifications, Troubleshooting, and Pressure Checks
Cleaning the Hydraulic System
Cylinders
Coupler Solenoid Locking Valve
Pilot Pressure Accumulator and Ride Control Accumulator
Mounted Equipment
Section Index - Mounted Equipment
Pedals and Levers
Air Conditioning Troubleshooting and System Checks For Systems with HFC-134a Refrigerant
Air Conditioner System Service
Removal and Installation of Air Conditioning Components For Systems with HFC-134a Refrigerant
Loader
ROPS Cab and ROPS Canopy
Cab Glass Installation
Electrical Schematic Foldouts and Hydraulic Schematic Foldout In Rear Pocket
Electrical Schematic Foldouts and Hydraulic Schematic Foldout P.I.N. JEE0135501 and Above