1998 Kobelco SK70SR Hydraulic Excavator Shop Manual

Troubleshooting, parts diagrams, and service data for the Kobelco SK70SR. Features detailed schematics and component breakdowns. Ref: S5YT0001E1

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Technical Safety Notice
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This official OEM document is intended for professional technicians and skilled operators. Performing service on mechanical equipment involves inherent risks. By purchasing, you acknowledge that RepairLoader provides original manufacturer data for informational purposes. Always prioritize safety: use correct tools, wear protective gear, and consult a certified professional if you are uncertain of any procedure.

Kobelco Models Covered & Key Technical Specifications

Models: Kobelco SK70SR
Sub-models / Variants: 1.65M Arm, 2.07M Long Arm, 450mm Shoe, 600mm Shoe, 700mm Triangle Shoe, Dozer Blade equipped variants
Build Years: 1998
Serial Numbers: YT00101~
Technical Data:

  • Engine: Isuzu A-4JB1 Water-cooled 4-cycle direct injection
  • Engine displacement: 2,771 cc (169 cu.in)
  • Rated Output: 55 PS (40.4 kW) at 2,100 rpm
  • Maximum Torque: 19.2 kgf-m (139 ft-lbs) at 1,600 rpm
  • Operating Weight: 6,700–6,960 kg (14,800–15,300 lbs)
  • Hydraulic Pressure (Main/Holding): 29,420 kPa
Technical Specifications
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Document Number / Seller:
30610 / Douglas Martinez
File Size:
49.50 MB
File Type:
PDF
Language:
English
Pages:
870
Printable:
Yes
Category:
Excavator
Last updated / verified
Dec 19, 2025

Kobelco Manual Features & Content Preview

1998 Kobelco SK70SR Hydraulic Excavator Technical Documentation

  • Covers 1998 Kobelco SK70SR hydraulic excavator variants with 1.65m standard or 2.07m long arm configurations and multiple shoe-width options
  • Official Kobe Steel publication code S5YT0001E(1), first edition July 1998
  • Contains 47 detailed exploded-view mechanical drawings, 15 system performance tables, and extensive hydraulic pressure specifications
  • Downloads to your account within seconds of checkout
  • Re-download the file any time, no expiration
  • Indexed PDF search covers every chapter and appendix
  • Full-text search finds any part number in seconds
  • This 870-page OEM manual is the authorized reference for initial factory-build specifications and maintenance standards established for the YT00101 and later serial number ranges

Excavator System Coverage

This factory manual details the core operational parameters for the 1998 Kobelco SK70SR, spanning complete chassis, engine, and hydraulic system documentation. The publication outlines general repair safety, unit conversion systems, and machine transportation dimensions. Specialized chapters include structural maintenance for the boom, arm, bucket, and dozer attachments, alongside comprehensive component-system teardown sections. The document integrates maintenance time schedules to assist in organizing shop work, providing specific labor estimates for engine, travel, swing, and electrical repairs.

Specification and Testing Data

Technical data provides precise tolerance charts for pin and bushing clearances, standard torque values for metric screws, and detailed performance test procedures for hydraulic circuits. Fuel injection timing is specified at 17° ± 1° before top dead center. The Isuzu A-4JB1 engine compression pressure is documented at 30 kgf/cm² (427 psi) at 200 rpm. The swing motor drain rate is standardized at 5.0 liters per 30 seconds. All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. An official 870-page Kobe Steel OEM shop manual covering the 1998 Kobelco SK70SR, documenting engine, hydraulic, electrical, and structural specifications for the YT00101-series build.

Manual FAQ, Purchase & Download Details

Are the hydraulic system and engine sections included to provide deep coverage of the machine sub-systems? keyboard_arrow_down

Manual includes comprehensive chapters dedicated to the engine and hydraulic systems, featuring detailed schematics and component identification. This ensures extensive documentation for the internal systems of the machine.

Does this document contain the full index of chapters covering maintenance, electrical systems, and machine specifications? keyboard_arrow_down

Shop manual contains a complete index detailing sections for specifications, maintenance standards, system operations, and assembly procedures.

Can this document help me find the listed fluid capacities and component weights for the machine? keyboard_arrow_down

Specification section includes detailed tables for component weights and lubricant capacities. These charts provide reference information for various machine configurations. You can use these tables to look up fluid and weight data for your records.

Is the section detailing the hydraulic circuit and component diagrams included in this shop manual? keyboard_arrow_down

System section covers detailed hydraulic schematics and component identification ranges for the excavator.

What publication information is available to confirm the edition of this shop manual? keyboard_arrow_down

Document displays the specific book code number and indicates that it is the first edition published in July 1998. These markers allow you to identify the revision status of the technical information provided.

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