Part of the Case Repair Manuals.
This 759-page Case 821C Loader, 721C Loader Service Manual (OEM #7-13451) puts the complete factory rebuild process for both wheel loaders in one searchable file. Inside you get full electrical troubleshooting with wiring schematics, hydraulic system diagrams covering the loader control valve and cylinders, and torque tables for decimal, metric, and steel hydraulic fittings. You also pull up power train, steering, and brake procedures with the same pressure-check and troubleshooting depth your dealer uses. Set hydraulic hose fittings (1/4-inch tube OD, 7/16-20 thread) to 72 to 144 pound-inches, and confirm the system holds 174 litres before you chase a phantom leak. No more guessing why the loader control valve won't hold pressure. Bookmarked by section so you jump straight from Power Train to Hydraulics without scrolling, then pull it up on your phone right at the machine and get back to work.
Other editions of this manual
What's Inside This Case 821C, 721C Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 5-18 | Standard Torque Specifications (Decimal Hardware, Metric Hardware, Steel Hydraulic Fittings) |
| Engine | 19-40 | Engine and Radiator Removal and Installation, Stall Test |
| Fuel System | 41-42 | |
| Electrical | 43-217 | Removal and Installation of Starter and Alternator, Electrical Specifications, Troubleshooting, And Schematics, Batteries, Starter and Starter Solenoid |
| Steering | 218-269 | Removal and Installation of Steering Components, Steering Specifications, Pressure Checks, And Troubleshooting, Steering Control Valve |
| Power Train | 270-434 | Transmission Specifications, Pressure Checks, And Troubleshooting, Transmission, 821C Front Axle, 721C Front Axle - 821C Rear Axle, Drive Shaft |
| Brakes | 435-476 | Removal and Installation of Brake Components, Hydraulic Brake Troubleshooting, Brake Accumulators, Brake Actuator Valve, Brake Accumulator Valve |
| Hydraulics | 477-651 | Removal and Installation of Hydraulic Components, Hydraulic Specifications, Troubleshooting, And Pressure Checks, Cleaning the Hydraulic System |
| Mounted Equipment | 652-756 | Pedals and Levers, Air Conditioning Troubleshooting and System Checks for Systems with HFC-134a Refrigerant, Air Conditioner System Service |
| Hydraulic and Electrical Schematics | 757-759 | Wiring Diagrams, Hydraulic Circuit Diagrams, Schematic Sheets, Connector Pinouts |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Hydraulic hose fitting torque (1/4 inch tube OD, 7/16-20 thread) | 72 to 144 pound-inches (8 to 16 Newton metres) | p. 10 |
| Accumulator charge valve cut out pressure | 187 to 194 bar (2715 to 2815 psi) | p. 449 |
| Normal operating oil temperature (above ambient) | 56 degrees C (100 degrees F) | p. 290 |
| Total hydraulic system capacity | 174 litres | p. 14 |
| Transmission oil operating temperature | 80 to 120 °C | p. 274 |
| Accumulator nitrogen charge pressure | 55 to 57 bar | p. 447 |
| Steering relief valve pressure setting | 184 to 193 bar | p. 231 |
| Cab and canopy mounting bolts torque | 786 to 840 Nm | p. 743 |
| Parking brake adjustment (M16 adjusting screw) | 0.5 to 1.5 mm | p. 656 |
| 821C Loader | ||
| In-line fuel filter replacement | USE CASE FILTERS | p. 17 |
| 621C/921C | ||
| Brake pump output, 621C/921C | 27.4 L/min at 172 bar | p. 447 |
| 721C/821C | ||
| Brake pump output, 721C/821C | 32 L/min at 172 bar | p. 447 |
