Part of the Case Repair Manuals.
This 936-page Case 621E Wheel Loader Service Manual (OEM #84243974) breaks down the 621E Tier 3 from engine and steering to power train, brakes, and hydraulics. Inside you get full electrical and hydraulic schematic foldouts, wiring pinouts for the instrument cluster and relay modules, and a dedicated troubleshooting section covering steering, transmission, and hydraulic pressure checks. You also get exploded views for teardown work, plus page after page of torque tables and clearance specs. Torque the engine drive shaft to coupler bolts to 53-62 Nm, and fill the cooling system to 36.0 liters. Stop tracing wires off a bad photocopy. This bookmarked PDF opens on your phone or tablet, so you can jump straight to the hydraulics section and get your loader back to work.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 7-26 | Section Index - General, Standard Torque Specifications, Fluids and Lubricants, Metric Conversion Chart |
| Engines | 27-66 | Section Index - Engines, Engine and Radiator Removal and Installation, Stall Tests, After Cooler, For Engine Repair, See Engine Service Manual |
| Fuel System | 67-68 | Section Index - Fuel System, For Fuel System Repair, See the Engine Service Manual |
| Electrical | 69-302 | Section Index - Electrical, Removal and Installation of Starter and Alternator, Electrical Specifications and Troubleshooting, Batteries, Instrument Cluster |
| Steering | 303-402 | Section Index - Steering, Removal and Installation of Steering Components, Steering Specifications, Pressure Checks, And Troubleshooting, Steering Cylinders, Center Pivot |
| Power Train | 403-650 | Section Index - Power Train, Removal and Installation of Power Train Components, Transmission Specifications, Pressure Checks, And Troubleshooting, Transmission, Front Axle |
| Brakes | 651-690 | Section Index - Brakes, Removal and Installation of Brake Components, Hydraulic Brake Troubleshooting, Brake Pump, Brake Accumulators, Parking Brake |
| Hydraulics | 691-838 | Section Index - Hydraulics, How to Read Hydraulic Schematics, Removal and Installation of Hydraulic Components, Hydraulic Specifications, Troubleshooting, And Pressure Checks |
| Mounted Equipment | 839-932 | Section Index - Mounted Equipment, Air Conditioning Troubleshooting and System Checks for Systems with HFC-134a Refrigerant, Air Conditioner System Service |
| Electrical and Hydraulic Schematics | 933-936 | Full-Size Electrical Wiring Schematics, Hydraulic System Schematics, Foldout Circuit Diagrams, Component and Connector Reference |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine Drive Shaft to Coupler Bolts Torque | 53 to 62 Nm (39 to 46 pound feet) | p. 631 |
| Power Relay Module A, Ignition Power (fuse A) | 105 A | p. 933 |
| Power Relay Module B, Ignition Power (fuse A) | 105 A | p. 933 |
| Engine Oil Capacity | 13.2 liters (14 U.S. Quarts) | p. 17 |
| Engine Cooling System Capacity | 36.0 liters (38 U.S. Quarts) | p. 17 |
| Fuel Tank Capacity | 246 liters (65 U.S. Gallons) | p. 17 |
| Hydraulic System Total System Capacity | 147.6 liters (39 U.S. Gallons) | p. 17 |
| Transmission Refill Capacity with Filter Change | 19.9 liters (21 U.S. Quarts) | p. 17 |
| Transmission Total System Capacity | 26.7 liters (28.2 U.S. Quarts) | p. 17 |
| Front Axle Capacity | 22.0 liters (23.2 U.S. Quarts) | p. 17 |
| Rear Axle Capacity | 22.0 liters (23.2 U.S. Quarts) | p. 17 |
| Steering Cylinder Torque for Piston Cap Screw | 810 to 925 Nm (597.5 to 682 pound feet) | p. 331 |
