Part of the Case Repair Manuals.
The loader is parked with the bucket down and a fault code on the cluster. This is the Case service manual for the 21F, 121F, 221F and 321F Tier 4B (final) compact wheel loaders. It is part number 47829079B, 2nd edition, May 2015. It covers the 121F XT, 121F ZB, 21F XT, 21F ZB, 221F HS, 221F STD, 321F HS and 321F STD.
This book gives you the real figures for the axles, travel pump, loader valve, steering, brakes and quick coupler. It also has the harness sheets and fault codes from 2741 to 4920. The engine chapter only covers engine and fuel tank remove and install.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 1-44 | Safety Rules, Basic Instructions for Shop and Assembly, Bolt and Pipe Fitting Tightening Torques, Consumables and Capacities, Machine Orientation, Hydraulic Contamination, Maintenance Standards, Electrical Equipment Precautions, Product Identification |
| Engine | 45-80 | Engine Remove and Install, Fuel Tank Remove and Install |
| Transmission Controls and Creeper | 81-96 | Powershift Transmission External Controls and Inching Valve, Creeper and Creep Speed Valve |
| Front Axle System | 97-200 | Powered Front Axle Specification for Axle Types 28.16 and 28.25, Dimensions, Torque, Remove and Install, Troubleshooting, Front Bevel Gear Set and Differential, Final Drive Hub, Steering Knuckles and Shafts |
| Rear Axle System | 201-366 | Powered Rear Axle 28.20 Specification, Torque, Transmission TB 172 and TB138.5 High Speed Motor, Rear Bevel Gear Set and Differential, Planetary and Final Drives, Final Drive Hub and Shafts |
| Brakes and Controls | 367-398 | Hydraulic Service Brakes, Parking Brake Adjustment, Front Axle Brake |
| Hydraulic Systems | 399-409 | Hydraulic Schematic Frames 01 and 02, Hydraulic System Troubleshooting |
| Reservoir, Gear Pump and Variable Displacement Pump | 410-463 | Reservoir, Cooler and Filters, Gear Pump and Tandem Gear Pump, Variable Displacement Pump Specification, Adjustment and High Pressure Check |
| Main Control Valve, Pilot System and High Flow | 464-481 | Main Control Valve Specification and Exploded View, Pilot System, High Flow Valve |
| Hydraulic Travel System | 482-507 | Gear Shift Valve Specification, Dynamic Description, Check, Remove, Disassemble, Inspect and Assemble |
| Loader Arm, Bucket and Quick Coupler Hydraulics | 508-528 | Front Loader Arm Hydraulic System, Front Loader Bucket Hydraulic System Troubleshooting, Quick Coupler Valve |
| Frames and Ballasting | 529-538 | Counterweight Remove and Install |
| Steering | 539-574 | Steering Control, Steering Valve and Hydraulic Control Components, Steering Cylinders |
| Electrical System: Harness Layouts | 575-659 | Electrical Schematic Sheets 01 to 24 for the Main Cab, Cab Roof, Frame, Engine and Transmission, Arm, Battery and Auxiliary Harnesses, With Connector Tables |
| Electrical: Circuit Schematics, Connectors and Fuses | 660-731 | Wire Color Codes, Electrical Schematic Sheets 02 to 26 for Power Distribution, Engine Control, Hydraulic Controller, Lighting, Instrument Cluster, CAN Bus and HVAC Circuits, Wire Connectors, Fuse and Relay Box |
| Front Axle Control and Instruments | 732-747 | Front Axle Control System and Differential Lock Control Valve, Warning Indicators, Alarms and Instruments |
| Fault Codes: Transmission Controls (UCM) | 748-833 | Fault Code Index, UCM Codes 2741 to 2894 for Differential Lock, Forward, Reverse, Direction, Gear, Creep Speed and Inching Solenoids |
| Fault Codes: Engine Control Unit (ECU) 3007-3518 | 834-1000 | Sensors, Injectors, Crankshaft and Camshaft Signals, Rail Pressure, Fuel Metering Unit, Glow Plugs, Oil Pressure, EGR and DPF Inducement Codes |
| Fault Codes: Engine Control Unit (ECU) 3616-3978 | 1001-1165 | Torque Limitation, H-Bridge and Valve Position, Injector Power Stages, Turbine Sensors, Fuel Metering and Diesel Particulate Filter Codes |
| Fault Codes: Hydraulic Functions (UCM) | 1166-1260 | UCM Codes 4351 to 4920 for Quick Coupler, High Flow, 3rd Function, Ride Control, Return to Dig, Floating and Main Hydraulics Solenoids |
| Platform, Cab, Bodywork and Decals | 1261-1281 | Cab Remove and Install |
| Special Tool Index | 1282-1287 | Index of Special Tools |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine oil | CASE AKCELA UNITEK NO. 1 SBL CJ-4 SAE 10W-40, 7.0 L (7.4 US qt) with filter change | p. 33 |
| Cooling system | 13 L (3.4 US gal), 50% coolant - 50% water | p. 33 |
| Fuel system | 25.0 L (6.6 US gal) | p. 33 |
| Hydraulic system and transmission | total 53 L (14 US gal), reservoir 40.0 L (10.6 US gal) | p. 33 |
| Axle oil | CASE AKCELA GEAR 135 H EP 80W-90 | p. 33 |
| Brake fluid | BRAKE LHM FLUID, 1.0 L (1.1 US qt) | p. 33 |
| Travel pump 21F - 121F | A4VG40DA1D2/32R, 40.0 cm³/rev (2.44 in³/rev) | p. 430 |
| Travel pump 221F - 321F | A4VG56DA1D2/32R, 56.0 cm³/rev (3.42 in³/rev) | p. 430 |
| Engine rated speed 21F - 121F / 221F - 321F | 2300 RPM / 2500 RPM | p. 430 |
| Travel pump pressure cut-off | 430 bar (6235 psi) | p. 430 |
| High-pressure relief valves 21F - 121F / 221F - 321F | 465 bar (6743 psi) / 467 bar (6772 psi) | p. 430 |
| Pump check oil temperature | 60 - 70 °C (140 - 158 °F) | p. 460 |
| Main control valve | 80 L/min (21.1 US gpm), nominal pressure 280 bar (4060 psi) | p. 466 |
| Main control valve plugs and valves | 42 N·m (31 lb ft) | p. 467 |
| Front axle 28.16 (21F - 121F) differential oil | 7.5 L (2.0 US gal) | p. 102 |
| Front axle 28.25 (221F - 321F) differential oil | 8 L (2.1 US gal) | p. 103 |
| Rear axle 28.20 (21F - 121F) transmission box | TB 172, oil 1.3 L (0.3 US gal) | p. 208 |
