This is the full factory repair set for the Caterpillar 277C Multi Terrain Loader, serial prefix JWF00001-UP (2007 to 2012 machines): Systems Operation, Testing and Adjusting, and Disassembly and Assembly across 19 PDF sections and 3,559 pages. You get the actual test procedures with pass/fail numbers - main relief at 23000 kPa (3335 psi), lift and tilt line relief at 24500 kPa (3553 psi), rack back at 27600 kPa (4003 psi), pilot pressure at 3500 kPa (500 psi) - plus a dedicated Torque Specifications section, full electrical schematics with component and connector locations, and undercarriage service for the rubber track system. The Testing and Adjusting content is the shared C-family book, so procedures cover the 277C alongside the 277C2, 287C, 287C2, and 297C.
What's Inside This Caterpillar 277C Repair Manual
| System | Pages | Key Topics |
|---|
| Air Inlet and Exhaust System | 2-79 | Turbocharger, Air Cleaner, Exhaust |
| Basic Engine | 80-710 | Engine Disassembly and Assembly, Head, Block, Crankshaft |
| Cooling System | 711-854 | Radiator, Water Pump, Thermostat, Fan Speed 1100-2690 RPM Checks |
| Electrical and Starting System | 855-1364 | Alternator, Starter, Batteries, Harnesses, Circuit Tests |
| Engine Arrangement | 1365-1482 | Engine Mounting and Arrangement |
| Frame and Body | 1483-1497 | Frame, Covers, Guards, ROPS |
| Fuel System | 1498-1667 | Injection Pump, Injectors, Filters, Fuel Testing |
| Hydraulic System | 1668-2315 | Main Relief 23000 kPa and Line Relief Test and Adjust, Pilot System, Accumulator, Pumps, Valves, Cylinders |
| Implements | 2316-2336 | Loader Arms, Bucket, Quick Coupler |
| Lubrication System | 2337-2422 | Oil Pump, Filters, Lubrication Routing |
| Machine Arrangement | 2423-2440 | Overall Machine Arrangement |
| Operator Station | 2441-2959 | Cab, Controls, Seat Bar Interlock, Display |
| Power Train | 2960-3266 | Hydrostatic System Test and Adjust, Drive Motors, Charge Circuit |
| Service Equipment and Supplies | 3267-3283 | Special Tools, Service Supplies |
| Undercarriage | 3284-3417 | Rubber Track, Rollers, Idlers, Track Tension |
| Work Tools | 3418-3426 | Work Tool Hydraulics, Xps High Flow, Attachment Service |
| Torque Specifications | 3427-3473 | Standard Metric and Inch Tightening Torques, Fittings and Hose Clamps |
| Schematic | 3474-3559 | Systems Operation, Testing and Adjusting, Disassembly and Assembly |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Main Relief Valve Setting (Standard Flow) | 23000 ± 700 kPa (3335 ± 102 psi) | p. 1816 |
| Main Relief Valve Setting (High Flow XPS) | 23000 ± 1000 kPa (3335 ± 145 psi) | p. 1816 |
| Hydraulic Oil Operating Temperature | 50° ± 10°C (122° ± 18°F) | p. 1816 |
| Line Relief Valve Setting (Lift) | 24500 ± 700 kPa (3553 ± 102 psi) | p. 1827 |
| Line Relief Valve Setting (Rack Back) | 27600 ± 700 kPa (4003 ± 102 psi) | p. 1828 |
| Line Relief Valve Setting (Tilt) | 24500 ± 700 kPa (3553 ± 102 psi) | p. 1828 |
| Line Relief Valve Setting (Auxiliary Standard) | 24500 ± 700 kPa (3553 ± 102 psi) | p. 1828 |
| Line Relief Valve Setting (Auxiliary XPS) | 31000 ± 700 kPa (4496 ± 102 psi) | p. 1828 |
| Accumulator Precharge Pressure | 900 ± 100 kPa (130 ± 15 psi) | p. 1831 |
| Pilot Pressure (Test) | 3500 ± 200 kPa (500 ± 30 psi) | p. 1835 |
| Pilot Pressure for Work Tool (Low Idle) | 2750 ± 200 kPa (399 ± 29 psi) | p. 1841 |
| Pilot Pressure for Work Tool (High Idle) | 3300 ± 200 kPa (479 ± 29 psi) | p. 1841 |
| Fan Speed (MIN) | 1100 ± 50 RPM | p. 1844 |
| Fan Speed (MAX) | 2690 ± 50 RPM | p. 1844 |
| Charge Pump Outlet Pressure (Test) | 18000 ± 1000 kPa (2610 ± 145 psi) | p. 1850 |
