Kobelco SK25SR / SK30SR / SK35SR Excavator 1997–1999 Shop Manual (P/N S5PW0001E2)

• Essential reference material for professional workshops or owners managing maintenance and repair workflows on the 1997–1999 Kobelco SK25SR, SK30SR, and SK35SR mini excavator series.
• Official Kobelco OEM publication S5PW0001E2, detailing revisions from May 1997 through April 1999.
• Features 37 hydraulic circuit diagrams, 5 engine performance curves, and 12 weight-specification tables for canopy and cab configurations.
• Primary source document for hydraulic pressure testing parameters and component weight data matching specific serial-number ranges.

Component and System Documentation

This factory publication provides an in-depth reference for the hydraulic, electrical, and structural systems of your mini excavator. It breaks down the functional mechanics behind operating circuits, including travel, boom, arm, bucket, and slew movements. You will find precise documentation of hydraulic pathways. The text details main and port relief valve settings, alongside individual component roles within the power distribution architecture.

Technical data sections deliver a thorough breakdown of reference values essential for diagnostic testing. This covers pressure thresholds for relief valves, engine idle speeds, and cylinder cycle times. The material also lists strict torque requirements for nuts, sleeves, and capscrews. Comprehensive weight charts for machine assemblies ensure safe lifting procedures during heavy component overhauls. Since high-pressure hydraulics pose significant physical risks, always ensure a certified technician evaluates the machinery prior to initiating any repair procedures.

Specification and Hydraulic Data

Key metrics for the 3TNE-series powerplants are thoroughly documented. You get exact figures for piston displacement, compression ratios, and valve clearances. Detailed schematics clarify the routing for both pilot and main piping, covering breaker-equipped machine variants as well. Ultimately, this 805-page OEM reference catalogs the critical service limits and system operating parameters designed for the 1997–1999 production run.