Kobelco SK100, SK120, SK120LC Excavator 1990-1996 Shop Manual (P/N S5LP0105E)
775 Pages • 41.47 MB • Instant, Printable PDF
Kobelco Models Covered & Key Technical Specifications
Models: Kobelco SK100, SK120, SK120LC
Sub-models / Variants: SK100, SK120, SK120LC, Standard, LC (Long Crawler)
Model Years: 1990–1996
Serial Numbers: YW-03371~, LP-06191~, YP-01601~
Technical Data:
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Engine model: Isuzu 4BD1 (SK100), Isuzu 4BD1T (SK120/SK120LC)
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Engine configuration: 4-cycle, water-cooled direct injection diesel
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Displacement: 3,856 cc (235 cu in)
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Max swing speed: 12.7 rpm
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Rated power (SK100): 76 ps / 2,300 rpm
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Rated power (SK120): 85 ps / 2,150 rpm
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Operating weight: 10,500–11,700 kg (23,100–25,800 lbs)
Kobelco Manual Features & Content Preview
This official 775-page OEM shop manual (Book Code: S5LP0105E) covers the foundational service parameters for 1990–1996 Kobelco SK100, SK120, and SK120LC crawler excavators. Built for the shop floor, it details the specific mechanical, electrical, and structural specifications required to maintain YW, LP, and YP series machines.
- Includes 47 exploded-view component diagrams and 18 technical troubleshooting flow charts.
Manual Coverage and Workshop Systems
Rather than generic overviews, this documentation delivers high-level technical depth for real-world diagnostics. The manual outlines essential systems including drive mechanics, hydraulic circuit configurations, swing performance data, and travel system adjustments. You will find complete electrical system schematics alongside exact procedural instructions for mechatro controller settings, pressure measurements, and valve adjustments for these specific Kobelco models.
Technical Specifications and Data
Accurate factory data is critical for heavy equipment maintenance. Engine specifications detail the Isuzu 4BD1 powerplant for the SK100, while clearly separating the requirements for the turbocharged 4BD1T found in the SK120 and SK120LC.
The resource lists essential torque values for both coarse and fine metric threads. Need hydraulic benchmarks? The main relief valve pressure for the SK100 and SK120 is specified at 290–295 kgf/cm² in H-mode. Engine compression pressure sits at 31 kgf/cm² at 200 rpm across both engine types, and the swing motor drain rate maxes out at 5–7 l/min based on your specific machine configuration.
Always consult a certified heavy equipment technician and review proper safety protocols before performing service, testing, or maintenance on these machines.
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