1998 Kobelco SK70SR Hydraulic Excavator Shop Manual • P/N S5YT0001E1

1998 Kobelco SK70SR Hydraulic Excavator Shop Manual

• Official Kobe Steel OEM publication (Code S5YT0001E(1), First Edition July 1998)
• Covers all 1998 SK70SR models, including 1.65m standard and 2.07m long arm configurations, plus multiple shoe-width options
• Contains 47 exploded-view mechanical drawings, 15 system performance tables, and essential baseline specs for major repair planning
• Instant download to your account—searchable, indexed PDF with lifetime access and no expiration
• Fully text-searchable file format locates exact part numbers and dimensions in seconds

Chassis, Engine, and Hydraulic Systems

This 870-page reference document outlines the original factory-build specifications for the YT00101 and later serial number ranges. It details the core operational parameters of the Isuzu A-4JB1 engine, hydraulic circuits, and the complete chassis. You will find standard metric torque values, unit conversion charts, and machine transportation dimensions mapped out clearly.

The manual also logs structural maintenance data for the boom, arm, bucket, and dozer attachments. To help shop managers schedule workflows efficiently, it provides specific labor time estimates for engine, travel, swing, and electrical repair jobs.

Specifications and Testing Data

Access precise factory tolerance charts. The document defines exact pin and bushing clearances alongside detailed performance test procedures for the entire hydraulic system. Crucial engine and fluid benchmarks include:

• Fuel injection timing at 17° ± 1° before top dead center
• Engine compression pressure of 30 kgf/cm² (427 psi) at 200 rpm
• Swing motor drain rate of 5.0 liters per 30 seconds

All technical data listed here serves as a general overview of the manual's contents. Hands-on mechanical work should always be performed by qualified technicians referencing the complete, authorized OEM documentation to ensure safe workshop practices.