Cab, canopy, EC and export builds of the Kobelco SK045-2 hydraulic excavator are all broken out in this 508-page Kobelco SK045-2 parts catalog PDF, OEM ID S4PY1008. Engine parts take up roughly the last quarter of the book, from crankcase and cylinder head to timing gears and fuel supply, while the hydraulic components section explodes the control valve and pump assembly right down to the shims. Every exploded view ties a callout to a Kobelco part number, so you can match the upper harness, track rollers, idler adjust assembly, swing bracket or a 1.45 m breaker arm without guessing at the parts counter. Before ordering, confirm your replacement main relief valve carries the 210 kgf/cm² at 55 L/min setting, not the 240 kgf/cm² port relief. Order the wrong valve and the crew waits on freight. Bookmarks jump straight to each group, and the pages print clean enough to clip above the bench and get greasy.
What's Inside This Kobelco SK045-2 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Upper Group | 31-44 | Frame Assy, Upp, Bracket Assy, Swing |
| Cab & Guard Group | 45-82 | Cab Instal, Speaker Instal, Cab Assy, Guard Assy, Head, Canopy Assy, Plate Assy, Floor |
| Control Group | 83-132 | Controls, Operators, Control Box Assy, Lever Assy, Propel, Control Assy, Remote, Control Lines |
| Hydr Lines, Group | 133-142 | Hyd Lines, Upp |
| Power-Plant Group | 143-192 | Power Plant Assy, Engine Assy, Engine Instal, Power Take-Off Assy, Radiator Assy, Control Assy, Engine, Panel Assy |
| Electric Group | 193-208 | Harness Assy, Upp, Battery Assy, Light Assy, Lamp Assy |
| Lower Group | 209-228 | Low Assy, Idler Assy, Crawler, Roller Assy, Track, Idler Adjust Assy, Hyd Lines |
| Attachment Group | 229-240 | Boom Assy, 2.86m, Arm Assy, 1.45m, Bucket Assy, 0.13m3 |
| Optional Parts (Att) | 241-254 | Arm Assy, 1.45m, Hyd Lines, Boom 2.86m, Arm 1.45m, Long 1.75m |
| Name-Plate & Tool | 255-308 | Name Plate Instal, Tool Assy, Element, Kit |
| Hydraulic Components | 309-380 | Valve, Control, Pump Assy |
| Engine Parts | 381-508 | Crankcase, Oil Pan & Gear Case, Cylinder Head, Main Moving Parts, Timing Parts, Fuel Supply Parts |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| SET Pressure (Valve Assy, Main Relief) | 210 kgf/cm² at 55 L/min | p. 317 |
| SET Pressure (Valve Assy, Port Relief) | 240 kgf/cm² at 20 L/min | p. 318 |
| Shim, T=0.2 | 0.2 mm | p. 411 |
| Shim, Plate T=0.2 | 0.2 mm | p. 413 |
| Main Relief Valve Set Pressure | 210 kgf/cm² at 55 L/min | p. 317 |
| Main Relief Valve Set Pressure (Engine) | 200 kgf/cm² at 33 L/min | p. 325 |
| Port Relief Valve Set Pressure (240 kgf/cm²) | 240 kgf/cm² at 20 L/min | p. 318 |
| Port Relief Valve Set Pressure (270 kgf/cm²) | 270 kgf/cm² at 55 L/min | p. 319 |
| Relief Valve Set Pressure (Swing) | 350 kgf/cm² at 10 L/min | p. 378 |
Kobelco SK045-2 Common Problems This Manual Covers
Kobelco SK045-2 air cleaner element assembly part number hard to find in the power plant parts list
Check the power plant exploded view on page 144, then item 4 in the parts list on page 147. The air cleaner is PY11P00001F1; order element assy PY11P00001S002 for the filter itself. Packing assy PY11P00001S005, wing bolt PY11P00001S007 and sensor PY11P00001S008 are listed under the same item if those also need replacing.
Manual Section: Power-Plant Group p. 147Water separator filter and O-ring part numbers hard to find when ordering fuel service parts
Check item 85 in the power plant parts list on page 148. The water separator assy is PY02P01006P1, listed for serial PY004091 onward; the filter is 171081-55910 and the O-ring is 102103-55520. Page 149 also cross-references the Mitsubishi separator number 34462-00030, so match it against your engine plate before ordering.
Manual Section: Power-Plant Group p. 148Exhaust tube part number changes by serial number on the power plant assembly parts list
Verify your serial number before ordering. On page 147, exhaust tube item 11 is PY12P01010P1 for serials PY003501 to PY005017 and PY12P01039P1 for PY005018 onward. The muffler, PY12P00001P1, is item 47 on page 148. If you order by item number alone, you can end up with the wrong tube.
Manual Section: Power-Plant Group p. 147Radiator assembly and radiator hose part numbers hard to locate in the power plant group
Check item 3 in the power plant parts list on page 147: the radiator assy is PY05P00006F1, with its own breakdown under reference 321-01. Radiator hose item 6 is PY05P01001P1. Before fitting parts, follow the warning on page 279: rotating fan, hot engine parts and drive belt can cause severe injury, so do not open the engine cover or service the engine with it running.
Manual Section: Power-Plant Group p. 147Upper harness assembly part number differs between cab and canopy machines on the parts order
Check the upper harness wiring diagram on page 196, then the harness parts list on page 197. Order PY13E00002F1 for canopy machines and PY13E00002F2 for cab machines. EC machines use a separate harness assy, listed under reference 411-50 in the Electric Group index on page 193, so confirm which build you have first.
Manual Section: Electric Group p. 197Main relief valve and port relief valve assemblies hard to tell apart in the hydraulic components
Compare the set pressures printed with each valve assy in the hydraulic components section. The main relief valve assy on page 317 is set at 210 kgf/cm² at 55 L/min. The port relief valves on pages 318 and 319 are set at 240 kgf/cm² at 20 L/min and 270 kgf/cm² at 55 L/min. Match the pressure before you order.
Manual Section: Hydraulic Components p. 317Frequently Asked Questions
What are the replacement part numbers for the engine filters on the Kobelco SK045-2?
The engine oil element kit is part number MD162326, and the fuel filter element kit is part number 34462-01040. Both are listed as Mitsubishi engine parts. p. 24
What is the set pressure of the main relief valve on the Kobelco SK045-2?
The set pressure for the main relief valve is 210 kgf/cm² at 55 L/min. p. 317
How will I receive this Kobelco SK045-2 Parts Catalog?
Straight to your device: 508 pages of searchable Parts Catalog, downloadable the moment payment goes through.
Is this Kobelco SK045-2 Parts Catalog printable?
Yes. Print the pages or sections you need for your own shop use. Any standard printer works.
Are hydraulic diagrams part of this Kobelco SK045-2 Parts Catalog?
Yes. Hydraulic lines are drawn as exploded piping views with port connection maps; the remote control valve lines are on page 118.
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