1990–1996 Kobelco SK120 Mark III Excavator Parts Manual

This 1990–1996 Kobelco SK120 Mark III excavator parts manual covers machines from serial LP05201, with Long Crawler assemblies listed from YP01601. It pairs exploded views with part numbers, quantities and application notes for identifying components before a repair.

Text search and wiring detail: The figure index, headings and parts tables are searchable; labels embedded in the illustrations are not. Five bookmarks provide access to the file sections. Some small wiring labels remain incomplete or difficult to read when enlarged.

• Engine and fuel system: Isuzu engine breakdowns covering the cylinder head, block, timing gears and valve mechanism, plus Diesel Kiki fuel-injection assemblies.

• Hydraulic components: Control, pilot and main relief valves, gear pumps, pump/regulator assemblies, swing and propelling motors, swivel joints, and repair-kit listings.

• Electrical assemblies: Nikko starter and generator exploded views, instrument-panel parts, and regional wiring-assembly diagrams with connector layouts and wire codes.

• Undercarriage and structure: Upper frame, track springs, idlers, rollers and standard/Long Crawler lower assemblies, with cab, seating and protective-guard parts.

• Boom and attachments: Boom, arm and bucket cylinders; alternate arms and buckets; and components for breaker, nibbler, clamshell and telescopic equipment.

Suited to mechanics and parts staff who can match illustrated assemblies and serial-number notes to an existing machine.

Serial Breaks and Regional Parts

The guide separates North European, European and export configurations, with additional guard and fan listings for extreme heat. Swedish control rework and Multi remote-control assemblies have their own entries.

In the swing reduction unit, the oil seal, retainer and spacer change at LP06419, while the needle bearings change at LP06769. These application notes help you match the sealing and bearing parts to the correct assembly before ordering for a repair.

Engine, Fuel and Cooling Components

The Isuzu engine sections extend to crankshaft and connecting-rod bearings, piston rings and the camshaft/rocker-arm mechanism. Standard and undersize bearing options are listed separately.

Diesel Kiki coverage includes the injection pump, mechanical governor, feed pump and nozzle holders. Cooling illustrations cover the water pump and its repair kit, thermostat, radiator and oil cooler. The intake/exhaust listing identifies the turbocharger assembly.

Hydraulic Parts and Repair Scope

Pump breakdowns identify internal rotating parts and front/rear regulators. The boom, arm and bucket cylinder lists distinguish seal components and repair-kit contents. Other entries cover holding, selector and independent-travel bypass valves.

These are illustrated parts breakdowns. The manual does not supply hydraulic pressure-test procedures, injection-pump calibration, torque tables or step-by-step overhaul instructions. Use the appropriate service instructions for those repair tasks.

Verify part numbers and consult a qualified technician before working on hydraulic or electrical systems.

Wiring Assemblies and Electrical Variants

The North European wiring tables split harness applications at LP06605, while the European/export wiring assemblies have a break at LP06769. The drawings show connector layouts and wire codes for the 24V system, alongside battery cables, relays and instrument-panel components.

Arms, Buckets and Mounting Hardware

Separate arm figures cover 2.1 m, 2.5 m and 3.0 m versions plus an extension. Export bucket listings include 0.30–0.60 m³ options, including the 0.45 m³ assembly; finishing and scraper buckets are separate.

The frame and guard drawings identify the associated fasteners. The included metric/inch notes caution against mixing thread systems in tapped holes or nuts, where incompatible fasteners can damage the mating threads.

PDF Contents and Included Reference Pages

One printable, English-language file. This is a 500-page PDF containing 490 illustrated-catalog pages, a 5-page figure index, 1 distributor-logo page, 1 figure-search guide, 2 metric/inch hardware-reference pages and 1 blank final page. All of these pages are included in the total.