Pin clearances, pressure test values and circuit routing for the Kobelco SK045, SK045-2 and SK050 hydraulic excavators are settled in one place: the 511-page factory shop manual, OEM ID S5PY0002E. More than a third of this Kobelco SK045, SK050 shop manual PDF covers the hydraulic system, where schematics trace pilot piping from the pump through the control valve to the travel motor and slewing motor. Wiring diagrams map the electrical system. Travel, slewing and attachment test procedures tell you what a healthy machine should read, and the back half covers troubleshooting plus the engine's fuel, governor, cooling and lubrication systems. Check SK045 swing bracket frame pin clearance against 0.062 to 0.151 mm, and torque the rubber crawler track spring assembly to 11.7 ± 0.2 kgf·m (85 ft·lbs). A parked excavator can cost your crew a whole shift. Bookmarks put you on the right chapter in a couple of clicks, and the text layer finds any part name.
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 8-20 | Precautions Concerning Disassembly and Reassembly, Precautions Concerning Removing and Installing Hydraulic Equipment, Precautions Concerning Disconnecting and Connecting Pipes |
| Specifications | 21-34 | Name of Components, Working Ranges of Attachments, Lifting-Up Ability Diagram, Precautions to Be Exercised in the Use of the Crane, Specifications of Devices |
| Maintenance Standards | 35-41 | Lower System, Bucket, Attachment Pin and Bushing |
| Hydraulic Pressure and Test Procedures | 42-48 | Hydraulic Pressure Measurements, Travel Test Procedure, Slewing Test Procedure, Attachment Test Procedure, Another Test Procedure |
| Performance Inspection Standards | 49-52 | Performance Inspection Standard, SK045 Inspection, SK050 Inspection, SK045-2 Inspection |
| Systems Overview and External View | 53-56 | Systems Introduction, External View, Machine Components |
| Drive and Slewing Systems | 57-66 | Power Plant Assembly, Engine Mount Installation, Pump Connection, Slewing System Construction, Slewing Ring, Swivel Joint |
| Traveling and Upper Frame Systems | 67-86 | Traveling System Construction, Crawler Shoe Assembly, Upper Roller Assembly, Track Roller Assembly, Upper Frame Construction, Counterweight Removal |
| Control and Attachment Systems | 87-102 | Cable Control System, Engine Control, Relief-Valve-Integrated Triple Solenoid Valve, Attachment Construction, Bucket Removal, Dozer Assembly |
| Hydraulic System and Components | 103-287 | Hydraulic System General, Pilot Piping, Hydraulic Pump, Control Valve, Travel Motor Assembly, Slewing Motor Assembly, Swivel Joint |
| Troubleshooting and Engine Maintenance | 288-458 | Troubleshooting Procedures, Engine Proper, Lubrication System, Fuel System, Governor System, Cooling System |
| Engine Electrical System and Service Data | 459-511 | Electrical System |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Hydraulic Hose Union Nut Tightening Torque (1/8) | 1.0 +0.5/-0 Kgf-m (7.23 +3.6/-0 ft-lbs) | p. 18 |
| Hydraulic Hose Tapered Threads Tightening Torque (1/8) | 1.2 +0.12/-0 Kgf-m (8.68 +0.87/-0 ft-lbs) | p. 18 |
| Track spring assembly tightening torque (Rubber crawler) | 11.7 ± 0.2 kgf·m (85 ± 1.4 ft·lbs) | p. 71 |
| Track spring assembly grease cylinder tightening torque | 6 ± 1 kgf·m (43 ± 7 ft·lbs) | p. 71 |
| Pump Displacement | 27.5 (1.68) cm³ (cu-yd) x 2 | p. 134 |
| Two-speed switching pressure | 10 kgf/cm² (140 psi) | p. 224 |
| Parking brake release pressure | 20 kgf/cm² (284 psi) | p. 224 |
| Brake release pressure | min 25 (355) Allowable pressure 40 (569) kgf/cm² (psi) | p. 251 |
| Cap (8) tightening torque | 0.8kgf-m (5.8ft-lbs) | p. 270 |
| SK045 | ||
| Swing bracket frame pin clearance | 0.062 to 0.151 mm | p. 39 |
| Swing bushing rod pin clearance | 0.061 to 0.155 mm | p. 38 |
| SK045, SK045-2 | ||
| Rated speed | 2000 rpm | p. 134 |
