Part of the Case Repair Manuals.
All 195 pages of this Case Compact Loader Service Manual (OEM #GSS-1476-2) are built around one machine family: the 4120, 4125, 4130, 4135, 4136, 4140, 4150, and 4155. Inside you get model-specific hydraulic and hydrostatic schematics, full wiring diagrams for every variant from the 4120 through the 4155, and troubleshooting charts that walk through pump failures and hydrostatic drive faults without guesswork. A complete run of exploded views spans the pump drive housing, wheel drive cases, and ROPS loader assembly, backed by torque tables covering standard hardware and hydraulic tube fittings. Torque the cylinder anchor nuts to 1315-1355 N·m (970-1000 ft. lbs.) and seat the 1-1/8-inch rod seal with tool 8101-533: those are your actual factory numbers, not somebody's best guess on a forum. No more chasing specs that may be wrong. Download the PDF, jump to any bookmarked section, search by keyword, and get your machine back in the field.
What's Inside This Case 4120–4155 Manual
| System | Pages | Key Topics |
|---|---|---|
| Safe Work Rules | 5-6 | Work Safely – Follow These Rules, To Prevent Injury, Always Use Safety Stands, Always Wear Safety Glasses, Keep Work Area Organized and Clean, Reinstall Safety Devices |
| Standard Torque Data for Nuts and Bolts | 7-8 | Standard Torque Data for All Standard Application Nuts and Bolts, Provided, Foot Pound = 1.355 Newton Meters, Bolt Type Identification Chart, Newton Meter = 0.738 Foot Pound |
| Metric Conversion Tables | 9-10 | Conversion Table - Inches to Millimeters, Inch = 25.4 Millimeters, Example to Convert 2.4635 Inches to Millimeters, Conversion Table - Millimeters to Inches, Mm = .03937008 Inches |
| Standard Torque Data for Hydraulic Tubes and Fittings | 11-13 | Tube Nuts for 37° Flared Fittings, O-Ring Boss Plugs, Adjustable Fitting Lock Nuts, Swivel Jic 37° Seats, Instructions for the Adjustable Standard Thread Tube Fittings |
| ROPS Protective Frame - Loader | 14-19 | Model 4120 (Bucket, ROPS, Loader), Models 4130, 4135, 4136, 4150 and 4155 (Bucket, Models 4135, 4140 |
| Engine | 20-51 | Model 4120 (Engine Specifications), Model 4125 (Engine Specifications, Fuel Tank), Models 4130 and 4135 (Engine Specifications), Model 4136 (Engine Specifications) |
| Pump Drive Housing | 52-63 | Model 4130, Models 4140, 4150 and 4155, Model 4150, Model 4130 Pump Drive Housing, Removal, Disassembly, Inspection |
| Wheel Drive Case | 64-81 | Model 4125, Front Wheel Case, Rear Wheel Case, Models 4120, 4130, 4140, 4150 and 4155, Wheel Case - Models 4135 and 4136 |
| Hydraulic System | 82-111 | Model 4120 (Specifications, Relief Valve Pressure Test, Relief Valve Adjustment, Hydraulic Pump Test, Hydraulic Pump, Control Valve, Troubleshooting) |
| Hydrostatic Drive | 112-161 | Model 4120 (Hydro-Transmission, Belt Adjustment, Troubleshooting), Model 4125 (Hydro-Transmission, Belt Adjustment) |
| Linkage and Seat Adjustment | 162-169 | Model 4120 and 4125 (Drive Linkage Adjustments), Models 4130, 4140 and 4150 (Drive Linkage Adjustment), Models 4125, 4130, 4140 and 4150 (Seat Lock Adjustment), Models 4135 |
| Brakes | 170-177 | Park Brake, Model 4125, S/N 131 and Below, S/N 132 and Above, Models 4135 and 4136, Model 4140, Model 4150 |
| Electrical System | 178-195 | Model 4120, Model 4125, Model 4130, Model 4135, Model 4136 (Alternator Drive Belt Replacement), Model 4140, Model 4150, Model 4155 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Cylinder anchor nuts torque | 1315-1355 N·m (970-1000 ft. lbs.) | p. 106 |
| Rod seal installing tool for 1-1/8 inch rod seals | 8101-533 | p. 107 |
| MODEL 4155 | ||
| Tie bolts torque (4155 Control Valve) | 25 to 40 ft. lbs. | p. 101 |
| Spool cap mounting screws torque (4155 Control Valve) | 10 to 13 ft. lbs. | p. 101 |
| Model 4136 | ||
| Model 4136 Engine Oil Capacity | 3.785 litres (4 quarts) | p. 32 |
| Model 4140 (Diesel) | ||
| Model 4140 (Diesel) Engine Torque (max, at 2000 rpm) | 104 Nm (77 ft. lbs.) | p. 37 |
| Model 4140 (Gasoline) | ||
| Model 4140 (Gasoline) Engine Torque (max, at 1500 rpm) | 77 ft. lbs. | p. 37 |
