Part of the Case Operator Manuals.
Every one of the 657 pages in this Case CX135SR Service Manual PDF (OEM #SM135SRTOC-0EN) is aimed at one machine: the CX135SR crawler excavator, standard and Tier 3. You get full-size electrical and hydraulic schematics (pp. 655-657), a dedicated troubleshooting section with pressure measurement and flow curve procedures, and step-by-step teardown coverage for the main pump, control valve, swing motor, final drives, and every attachment cylinder. Inside: undercarriage work too, from track removal to take-up rollers. Set the main relief valve at 34.3 MPa for boom, arm, and bucket circuits, then torque the turntable bearing bolts to 280-312 Nm. Your excavator is parked and the meter is running. Get factory numbers, not forum guesses. Bookmarked PDF that opens on any device; type a spec into the search bar and jump straight to the right section.
What's Inside This Case CX135SR Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information | 3-56 | Safety, General Information and Standard Torque Data |
| Engine | 57-60 | Removal and Installation of the Engine, Engine Specifications, Disassembly and Assembly of the Engine |
| Fuel System | 61-64 | Removal and Installation of the Fuel Tank, Fuel Engine System |
| Electrical System | 65-146 | Electrical and Engine Functions and Service Support |
| Undercarriage | 147-196 | Removal and Installation of Tracks, Rollers, Take-Up Roller |
| Drive Train | 197-262 | Removal and Installation of the Drive Motor and Final Drive Transmission, Disassembly and Assembly of the Drive Motor and Final Drive Transmission |
| Specifications, Troubleshooting, and Hydraulic Pressure Settings | 263-288 | Hydraulic Pressure Settings, Troubleshooting, Pressure Measurement, Flow Curve |
| Hydraulic Reservoir and Main Pump | 289-324 | Hydraulic Reservoir Removal, Main Hydraulic Pump Removal, Main Hydraulic Pump Disassembly, PTO Unit |
| Main Hydraulic Control Valve | 325-406 | Control Valve Disassembly, Control Valve Assembly, Relief Valves, Anti-Drift Valves |
| Attachment Cylinders | 407-470 | Boom Cylinder, Dipper Cylinder, Bucket Cylinder, Offset Cylinder, Blade Cylinder |
| Hand Control Levers and Foot Control Pedals | 471-522 | Hand Control Lever Disassembly, Foot Control Pedal Disassembly, Pilot Function Blocks |
| Solenoid Valves and Cushion Control Valve | 523-558 | Solenoid Valve Block, Cushion Control Valve, Hydraulic Swivel |
| Hydraulic Functions and Component Functions | 559-648 | Travel Circuits, Swing Circuits, Boom Circuits, Arm Circuits, Option Circuits |
| Upperstructure | 649-657 | Air Conditioning Unit, Large Size Hydraulic Schematics, Large Size Hydraulic Schematics - 2PC and Dozer Blade, Large Size Electrical Schematics |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Set pressure of main relief valve (Boom/Arm/ Bucket) | 34.3 MPa (4974.79 psi) | p. 21 |
| Set pressure of main relief valve (Swing) | 28.0 MPa (4061.06 psi) | p. 21 |
| Swing motor operating pressure | 28 MPa (4061 psi) | p. 26 |
| Swing motor mechanical brake torque | 284.7 Nm (209.98 lb-ft) | p. 26 |
| Turntable bearing (lower frame) torque setting | 280-312 Nm (206-230 lb-ft) | p. 48 |
| Engine Output | 70.9 kW / 2000 rpm | p. 18 |
| Hydraulic Oil Tank Capacity | 81 L | p. 19 |
| Engine Oil Capacity | 17.2 L | p. 19 |
| Main Relief Valve Pressure | 34.3 MPa | p. 21 |
| Swing Relief Valve Pressure | 28.0 MPa | p. 21 |
| Travel Motor Relief Valve Pressure | 37.3 MPa | p. 26 |
| Swing Motor Relief Valve Pressure | 28 MPa | p. 26 |
