Kobelco SK25SR / SK30SR / SK35SR Excavator Shop Manual 1997-1999

Diagnostic procedures and component service for KOBELCO SR-Series excavators. Ref: S5PW0001E2

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Kobelco Models Covered & Key Technical Specifications

Models: Kobelco SK25SR, Kobelco SK30SR, Kobelco SK35SR
Sub-models / Variants: Canopy, Cab, R.O.P.S. Canopy, Standard Arm, Long Arm, Rubber Shoe, Steel Shoe
Build Years: 1997–1999
Serial Numbers: SK25SR: PV10001–, SK30SR: PW07001–, SK35SR: PX05001–
Technical Data:

  • Engine model: 3TNE78A-YBB (SK25SR), 3TNE82A-YB (SK30SR), 3TNE84-YBD (SK35SR)
  • Engine displacement: 1,204 cc (SK25SR), 1,330 cc (SK30SR), 1,496 cc (SK35SR)
  • Rated power: 21.2 PS @ 2,350 RPM (SK25SR), 23 PS @ 2,300 RPM (SK30SR), 26.3 PS @ 2,350 RPM (SK35SR)
  • Hydraulic pressure (Main relief): 210 kgf/cm²
  • Slewing speed: 8.4–8.9 RPM
  • Travel speed: 2.0–4.9 km/h (range dependent on model and gear)
  • Fuel tank capacity: 35 liters
Technical Specifications
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Document Number / Seller:
30607 / Peter Phillips
File Size:
37.40 MB
File Type:
PDF
Language:
English
Pages:
805
Printable:
Yes
Category:
Mini Excavator
Last updated / verified
Jan 7, 2026

Kobelco Manual Features & Content Preview

Kobelco SK25SR, SK30SR, and SK35SR Hydraulic Excavator Service Manual

  • Built for owners and professional workshops servicing the 1997–1999 Kobelco SK25SR, SK30SR, and SK35SR mini excavator series including canopy and cab configurations
  • Official Kobelco OEM publication S5PW0001E2, covering revisions from May 1997 through April 1999
  • Contains 37 detailed hydraulic circuit diagrams, 5 engine performance curves, and 12 weight-specification tables for all component variants
  • Downloads to your account within seconds of checkout
  • Your order stays downloadable from your account for life
  • OCR text layer lets you jump to a torque spec by keyword
  • Laid out for standard letter and A4 printing
  • This 1997–1999 Kobelco SK25SR, SK30SR, and SK35SR factory manual serves as the primary source for hydraulic pressure testing and component weight documentation for these specific serial-number ranges

Component and System Documentation

The 1997–1999 Kobelco SK25SR, SK30SR, and SK35SR service manual provides an in-depth reference for hydraulic, electrical, and structural systems. Major segments include detailed functional descriptions of operating circuits such as travel, boom, arm, bucket, and slew movements. Each section identifies the specific hydraulic pathways, main and port relief valve settings, and individual component roles within the Kobelco SK25SR, SK30SR, and SK35SR power distribution architecture.

Technical data sections provide a detailed breakdown of reference values for diagnostic testing, including pressure thresholds for relief valves, engine idle speeds, and cylinder cycle times. The manual also details torque requirements for nuts, sleeves, and capscrews, alongside comprehensive weight charts for machine assemblies and attachments to facilitate proper lifting procedures. Reference only — always consult a certified technician before performing service on this equipment.

Specification and Hydraulic Data

Key engine specifications for the 3TNE-series powerplants are documented, including piston displacement, compression ratios, and valve clearances. Hydraulic diagrams clarify the routing for pilot and main piping, including those for breaker-equipped variants. The Kobelco SK25SR, SK30SR, and SK35SR shop manual is a definitive 805-page OEM reference detailing service limits and system operating parameters for the 1997–1999 model production period.

Document Reference: S5PW0001E2, 2nd Revision April 1999

Manual FAQ, Purchase & Download Details

Is the hydraulic system chapter in this manual inclusive of component lists and valve block details? keyboard_arrow_down

Document contains dedicated sections for the hydraulic system, including information on the pump, swivel joint, and control valve components. These sections offer system-level overviews to assist with understanding the hydraulic configuration.

Can I find engine and drivetrain specifications within this technical document? keyboard_arrow_down

Manual includes comprehensive specification tables for the engine models, providing data on displacement, output, and rotational speed parameters.

Does this manual contain tables for tightening specifications and fundamental fit tolerances for the covered machinery? keyboard_arrow_down

Publication includes maintenance standard sections that reference various tightening specifications and technical standards. These tables are presented to support understanding of factory-recommended assembly values. The content also covers general dimensions and weight information for the different excavator configurations.

Are specific edition and revision notes provided for the Kobelco shop manual document? keyboard_arrow_down

Document lists the first edition and subsequent revision dates on the title and index pages to help users confirm they are accessing the appropriate technical information.

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