Your SK135SR has a weeping swing motor seal and the parts counter wants a number before they quote it: this 758-page Kobelco SK135SR, SK135SRL parts catalog PDF (OEM ID S3YY00003ZE04) holds it for the hydraulic excavator, SRLC included. Exploded views take the superstructure, undercarriage and attachments down to the bolt, from slewing ring and track rollers to boom, arm and bucket, each callout tied to a part number. Hydraulic components fill close to a quarter of the book, with the main relief valve, propel motor and swivel joint broken down piece by piece, and wiring diagrams trace the upper harness. Before you order a cartridge, match the main relief valve to its 350 kgf/cm² set pressure at 60 L/min, and port relief F2 to 400 kgf/cm² at 30 L/min. A guessed relief setting can split a hose. Search it, jump by bookmark, or print the valve pages for the bench; grease on paper costs nothing.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|
| Parts Manual Cover | 1-2 | Hydraulic Excavators, SK135SR(LC), SK135SRL |
| Editorial Procedure | 3-4 | Machine Serial Number, Engine Serial Number, Date Delivered, District Indication |
| Preface | 5-7 | Placing Order, Machine Type, Machine Number, Part Number, Part Name, Quantity Required |
| General Drawing | 8 | Bucket Cylinder, Arm Cylinder, Boom Cylinder, Swing Motor, Hydraulic Pump, Radiator and Oil Cooler |
| General Maintenance Items | 23-32 | Filter List, Nut & Sleeve Parts No, Paint Color |
| Superstructure | 33-280 | Frame Assy, Upp, Counterweight Assy, Engine Assy, Engine Instal, Radiator Instal, Radiator Assy, Cleaner Assy |
| Undercarriage | 281-328 | Low Group, Slewing Ring, Crawler Idler, Track Roller, Upper Roller, Shoe Assembly |
| Attachments | 329-368 | Boom Assembly, Arm Assembly, Bucket Assembly, Hydraulic Lines |
| Tools and Spare Parts | 369-378 | Tool and Accessory, Tool Box Assembly, Element Kit |
| Optional Parts | 379-460 | Fuel Lines, Lamp Installation, Cab Assembly, Control Lines, Boom and Arm Safety |
| Hydraulic Components | 493-670 | Valve Assy Relief, Valve Assy Selector, Motor Assy Propelling, Joint Assy Swivel, Valve Assy Main Relief, Valve Assy Holding |
| Engine Components | 671-758 | Engine Gasket Kit, Cylinder Head Cover, Cylinder Head, Cylinder Block, Oil Pan and Level Gauge, Camshaft and Valve |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Set Pressure (Main Relief Valve) | 350 kgf/cm² at 60 L/min | p. 518 |
| Set Pressure (Valve Assy, Port Relief F1) | 385 kgf/cm² at 30 L/min | p. 524 |
| Set Pressure (Valve Assy, Port Relief F2) | 400 kgf/cm² at 30 L/min | p. 524 |
| Set Pressure (Valve Assy, Port Relief F3) | 230 kgf/cm² at 30 L/min | p. 524 |
| Set Pressure (Valve Assy, Port Relief F4) | 315 kgf/cm² at 30 L/min | p. 524 |
| Set Pressure (Valve Assy, Port Relief F5) | 325 kgf/cm² at 30 L/min | p. 524 |
| Set Pressure (Valve Assy, Port Relief F6) | 300 kgf/cm² at 190 L/min | p. 524 |
| Set Pressure (Valve Assy, Control F1) | 405 kgf/cm² at 150 L/min | p. 520 |
| Set Pressure (Valve Assy, Control F2) | 385 kgf/cm² at 150 L/min | p. 520 |
