This is the full Cat SIS repair bundle for the 236B, 246B, 252B, and 262B skid steers built 2004 to 2008, all running the 3044C (C3.4) diesel. You get Testing and Adjusting, Systems Operation, Disassembly and Assembly, plus the actual hydraulic and electrical schematic sheets, over 4,400 pages total. This is the material a Cat dealer tech pulls up before touching your machine: real pressure specs for the main relief (23000 kPa), line reliefs, pilot circuit, and charge pump, wiring harness open and short circuit test procedures, and step-by-step teardown for everything from the cylinder head to the final drives. If you own one of these B-series loaders out of warranty, this pays for itself the first time you skip a shop visit.
What's Inside This Caterpillar 236B-262B Repair Manual
| System | Pages | Key Topics |
|---|
| Schematics | 52-150 | Hydraulic and Electrical System Schematic Sheets, Fluid Power and Electrical Graphic Symbols |
| Air Inlet and Exhaust System | 151-242 | Air Cleaner, Turbocharger, Exhaust, Muffler |
| Basic Engine | 243-975 | Cylinder Head, Pistons, Crankshaft, C3.4/3044C Engine |
| Cooling System | 976-1173 | Water Pump, Thermostat, Radiator, Cooling Tests |
| Electrical and Starting System | 1174-2295 | Alternator, Starter, Batteries, Wiring Harness open/short Circuit Tests, System Schematics, Component Locations |
| Engine Arrangement | 2296-2458 | 3044C/C3.4 Engine Arrangement and Specifications |
| Frame and Body | 2459-2497 | Frame, Guards, Covers |
| Fuel System | 2498-2684 | Fuel Injection, Fuel System Pressure, Priming |
| Hydraulic System | 2685-3266 | Main and Line Relief Valve Pressures, Pilot System, Accumulator, Charge Pump, Hydraulic Tests |
| Implements | 3267-3292 | Loader Linkage, Lift and Tilt Cylinders |
| Lubrication System | 3293-3402 | Oil Pump, Engine Oil Relief Valve, Lubrication |
| Machine Arrangement | 3403-3414 | Overall Machine Arrangement |
| Operator Station | 3415-3929 | Cab, Controls, Seat, HVAC |
| Power Train | 3930-4372 | Hydrostatic Drive, Motors, Final Drives, Parking Brake |
| Service Equipment and Supplies | 4373-4395 | Tooling, Fluids, Supplies |
| Torque Specifications | 4396-4443 | Standard Bolt Torque Charts |
| Work Tools | 4444-4453 | Work Tool Attachments |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| 236B/246B/252B/262B |
| Main Relief Valve Pressure | 23000 ± 700 kPa (3336 ± 102 psi) | p. 2857 |
| Line Relief Valve Pressure - Lift Cylinder Head Raise position | 27600 ± 700 kPa (4003 ± 102 psi) | p. 2868 |
| Line Relief Valve Pressure - Tilt Cylinder Head Tilt Forward position | 24500 ± 700 kPa (3554 ± 102 psi) | p. 2868 |
| Line Relief Valve Pressure - Tilt Cylinder Rod Tilt Back position | 27600 ± 700 kPa (4003 ± 102 psi) | p. 2868 |
| Line Relief Valve Pressure - Auxiliary Circuit | 24500 ± 700 kPa (3554 ± 102 psi) | p. 2868 |
| Charge Pump Minimum Flow | 32 L/min (8.45 US gpm) | p. 2890 |
| All models (Type 1 relief valve) |
| Main Relief Valve Locknut Torque | 24 ± 3 N·m (18 ± 2 lb ft) | p. 2868 |
| Main Relief Valve Cap Torque | 24 ± 3 N·m (18 ± 2 lb ft) | p. 2868 |
| All models (at 2300 ± 25 RPM) |
| Pilot Pressure (Engine RPM) | 3225 ± 200 kPa (468 ± 29 psi) | p. 2873 |
| All models |
| Accumulator Charge Pressure | 900 ± 100 kPa (130 ± 15 psi) | p. 2873 |
| Pilot System Pressure - Charge Pressure (Low Idle) | 3100 ± 200 kPa (450 ± 29 psi) | p. 2884 |
| Pilot System Pressure - Pilot Pressure for the Work Tool (Low Idle) | 3100 ± 200 kPa (450 ± 29 psi) | p. 2884 |
| Pilot System Pressure - Charge Pressure (2300 ± 25 RPM) | 3225 ± 200 kPa (468 ± 29 psi) | p. 2884 |
| Pilot System Pressure - Pilot Pressure for the Work Tool (2300 ± 25 RPM) | 3225 ± 200 kPa (468 ± 29 psi) | p. 2884 |
| Brake Pressure (Initial) | less than 300 kPa (44 psi) | p. 2886 |
| Brake Line Pressure (Parking Brake Disengaged) | 3100 ± 200 kPa (450 ± 29 psi) | p. 2886 |
| Charge Pump Outlet Pressure | 18000 ± 1000 kPa (2611 ± 145 psi) | p. 2890 |
| Charge Pump Test Engine Speed | 2000 ± 10 RPM | p. 2890 |
| Charge Pump Test Oil Temperature | 45° ± 5°C (113° ± 9°F) | p. 2890 |
| Work Tool Pump Test Oil Temperature | 50° ± 10°C (122° ± 18°F) | p. 2892 |
| Work Tool Pump Outlet Pressure | 18000 ± 1000 kPa (2611 ± 145 psi) | p. 2892 |
| Work Tool Pump Test Engine Speed | 2000 ± 10 RPM | p. 2892 |
