Kobelco SK100 Hydraulic Excavator Shop Repair Manual (S/N YW02801 and Up)

Kobelco shop manual for the SK100, book code S5YW0002E, dated November 1990. For machines from serial YW02801.

This is the old 10 tonner with the Isuzu 4BD1, a 3.9 litre four that will run for ever if it gets clean oil. No computers to speak of. If you can read a hydraulic diagram and hold a spanner, you can keep one of these going with this book.

Compatibility and quick facts

• Make: Kobelco
• Model: SK100
• Serial numbers: YW-02801 and up
• Engine: Isuzu 4BD1, 3,856 cc
• Book code: S5YW0002E
• Edition: Sections dated 1990-11
• Manual type: Factory shop manual
• Length: 754 pages
• Format: PDF, download link right after checkout

What is inside

• Specifications
• Location and weight of components
• Maintenance standards and test procedures
• Standard flat rate (labour time) table
• Hydraulic system
• Swing frame and upper structure
• Travel system
• Attachments
• Control system
• Electrical system
• Troubleshooting
• Component overhaul: pump, control valve, motors, swivel joint, cylinders, reduction units
• Engine
• Air conditioner system

Good to know before you buy

This manual is for the SK100 on its own. We also have combined SK100 and SK120 manuals for other serial ranges, so check your number first.

On a machine this age, expect to use the hydraulic test section and the cylinder and swivel joint pages most.

This PDF is a scan of the printed manual. Diagrams zoom in clearly, but text search will not work, so use the index pages to find your section.