Part of the Case Repair Manuals.
This 846-page Case 521E Service Manual (OEM 87728450 A - EU) covers the 521E, 521E Tier III, and 521E Wheel Loader Tier III down to the last cotter pin. Open it and you get full electrical schematic foldouts, hydraulic circuit diagrams with component numbers, and a dedicated troubleshooting section for loss of power or slow loader operation. Transmission, front axle, rear axle, steering, and brake pump procedures sit right alongside the air conditioning system checks nobody else bothers to document well. Set the auxiliary A and B port relief valve to 290 bar, and top off the engine with 11.8 liters of Case AKCELA 15W-40 after a filter change. No more flipping through three forum threads to find one pressure spec. It's bookmarked by section, so you jump straight from Power Train to Hydraulics without scrolling, then bring your tablet out to the 521E and get the bucket back to spec.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | General Service Information, Specifications, Standard Torques, And Maintenance for the 521E Wheel Loader | |
| Power Train | Transmission, Torque Converter, Axles, Differentials, And Final Drives | |
| Loader & Mounted Equipment | Loader Frame, Arms, Bucket and Linkage, Mounting, And the Mounted-Equipment Index | |
| Air Conditioning & Heating | Air Conditioning Troubleshooting and System Checks, A/C and Heater Component Removal and Installation, And Refrigerant Service | |
| ROPS & Cab | Roll Over Protective Structure (ROPS), Cab Structural Frame (Csf), And Cab Glass Installation | |
| Electrical & Hydraulic Schematics | Electrical and Hydraulic Schematic Foldouts and Wiring References |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine Oil Capacity with Filter Change | 11.8 liters (12.5 U.S. Quarts) | p. 18 |
| Engine Oil Type | Case AKCELA (SAE 15W-40) | p. 18 |
| Circuit relief valve pressure setting Auxiliary A and B port (XT and Z Bar) | 290 bar (4206 psi) | p. 680 |
| Circuit relief valve pressure setting Bucket A and B port (Z Bar) | 290 bar (4206 psi) | p. 680 |
| Fuel Tank Capacity | 189.3 liters (50 U.S. Gallons) | p. 18 |
| Hydraulic System Total Capacity | 113.6 liters (30.0 U.S. Gallons) | p. 18 |
| Transmission Total System Capacity | 26 liters (27.5 U.S. Quarts) | p. 18 |
| Axles Capacity (Front/Rear) | 22.0 liters (23.2 U.S. Quarts) | p. 18 |
| Torque for piston cap screw (Steering Cylinder) | 585 to 720 Nm (431 to 531 pound-feet) | p. 328 |
| Torque for gland (Steering Cylinder) | 339 to 475 Nm (250 to 350 pound-feet) | p. 328 |
| Torque converter stall speed | 1950 to 2030 rpm | p. 58 |
