Komatsu PC400SE-8R PC400LCSE-8R Excavator Parts Book Manual PDF

Description

Komatsu PC400SE-8R / PC400LCSE-8R Parts Book – LEPBP40804

This is the complete Komatsu parts book for the PC400SE-8R and PC400LCSE-8R hydraulic excavators, covering serial numbers J30001 and up and engine serial numbers 660029 and up. Whether you are rebuilding a final drive, ordering a replacement hydraulic hose, or tracking down a single O-ring for the SAA6D125E-5 engine, this parts book gives you the exact part numbers and exploded diagrams you need to get the right component the first time.

File Details

• Manual Type: Parts Book (Parts Catalog)
• Brand: Komatsu
• Models Covered: PC400SE-8R, PC400LCSE-8R (also covers PC400-8, PC400LC-8)
• Document Number: LEPBP40804
• Serial Numbers: J30001 and up
• Engine: SAA6D125E-5, Engine No. 660029 and up
• Language: English
• File Format: PDF

Chapters Covered

The parts book is organized by assembly group with exploded illustrations and corresponding part number listings. Every major system on the machine is covered:

• Engine (SAA6D125E-5) – Cylinder head, cylinder block, crankshaft, flywheel housing, oil pan and suction tube, vibration damper, piston and connecting rod, camshaft and cam follower, rocker arm and housing, oil pump, oil filter and piping, oil cooler, water drain valve
• Fuel System – Fuel supply pump and common rail, fuel supply and return piping, common rail inner parts, fuel supply pump inner parts, fuel injector and spill tube, fuel filter and piping, fuel priming pump, fuel air vent, fuel return
• Cooling System – Water pump mounting and air vent, cooling fan (suction type), fan pulley and drive belt, fan drive, corrosion resistor related parts, after cooler
• Electrical System – Alternator and mounting (50A/60A), starting motor mounting (7.5kW/11kW), starting motor inner parts, electrical wiring (engine harness), name plate and caution plate
• Cooling System – Machine Side – Radiator and frame, oil cooler and shroud, after cooler and condenser, after cooler piping, cooling cover, radiator piping and sub tank, fan guard
• Fuel Tank and Related Parts – Fuel tank, fuel lines, water separator
• Electrical System – Machine Side – Battery, electric wiring (starting harness, main harness, working lamp), additional work lamp, horn, travel alarm, rear view monitoring system
• Hydraulic System – Hydraulic tank, main valve connection parts, main valve valve bracket, main pump connecting parts, suction line, delivery line, oil cooler line, return line, drain line, boom line, arm and bucket line, attachment lines, solenoid valve, pressure switch, PPC main line, accumulator
• Main Frame and Related Parts – Revolving frame, boom foot pin
• Operator’s Compartment and Control – Operator’s seat (suspension type, rigid type, PVC leather), seat belt, luggage box net, top guard, front guard, half guard, front full guard, floor mat, rain visor, sun visor, window washer, air conditioner (compressor and piping), operator’s cab and window, front window, front lower window, roof window, door, door lock, open lock and door catch, wiper and room lamp, speaker and window washer, roof cover and air intake, pressure valve and grip, cab in parts
• Guard – Hood, frame (machine cab), left side door, right side door, partition, cover, battery case, hand rail, rear view mirror, counter weight, counter weight mounting, under cover (revolving frame)
• Swing Circle and Related Parts – Swing circle, swing machinery, swing motor, swivel joint
• Travel and Lower Piping – Travel piping, travel piping (for LC), final drive, front idler, idler cushion, carrier roller, track shoe, track frame, under cover
• Work Equipment – Boom (7.0M boom, 6.7M boom), boom cylinder, boom cylinder top pin, arm cylinder, arm (3.4M arm, 2.4M arm), bucket link, bucket cylinder, bucket (1.7M3 to 3.2M3), side cutter, side shroud, hook
• Mark and Plates – Decal and plate, lubrication charts, caution plates, Komatsu logo
• Accessory – Spare parts, cap and overall, tool
• Miscellaneous – Fuel self charge pump, blind parts, export tool, engine drain hose, battery cut off
• Services Kit – Swing machinery assembly, shoe bolt and nut service kit, track link, air cleaner, precleaner, fuel self charger pump, rubber antenna, operator’s seat assembly, main pump, boom cylinder, arm cylinder, bucket cylinder, swivel joint, swing motor, travel motor, main valve, PPC valve, accumulator, filter, breather, valve, air conditioner unit

This parts book is organized exactly the way a technician or parts counter needs it: each assembly group has a detailed exploded illustration with reference numbers that map directly to the part number and description listing. You can visually identify a component, get its part number, and see the quantity required. The engine section covers all major internal components of the SAA6D125E-5, from the cylinder head assembly down to individual valve guides, seats, springs and seals. The hydraulic section covers the main valve, main pump, travel motor, swing motor, and all related piping with flanges, O-rings, bolts and connectors. The undercarriage section covers the track frame, track rollers, carrier rollers, front idler, idler cushion, and all track shoe options.

What This Parts Book Gives You

A parts book is not a repair manual, but for anyone maintaining or rebuilding a Komatsu PC400SE-8R or PC400LCSE-8R, it is just as important. It tells you exactly which part number to order for every component on the machine. No more guessing whether a seal is 70mm or 75mm, no more ordering the wrong bolt, no more paying return shipping because a hydraulic fitting was the wrong thread. The exploded views make it possible to see how components assemble and to identify parts that are not obvious from a schematic. If you are running a fleet, having the correct parts book means your mechanics can identify and order parts directly from the illustration without waiting on a dealer. If you are performing a major rebuild, the parts book helps you build a complete parts list so you can order everything in one go instead of making multiple orders as you discover worn components. The document number LEPBP40804 makes it easy to verify you are using the correct parts book for your serial number range.

Why It Matters

Komatsu machines are built to last, but they do need parts. Whether you are replacing a worn track roller, a leaking hydraulic hose, a failed solenoid valve, or rebuilding the engine, having the exact part numbers on hand saves time, money, and frustration. This parts book covers both the PC400SE-8R and the PC400LCSE-8R, including the long carriage (LC) variant, and it accounts for serial number breaks throughout the production run so you order the part that matches your machine. The SAA6D125E-5 engine section alone contains dozens of exploded diagrams covering the cylinder head, cylinder block, crankshaft, pistons, camshaft, oil pump, oil cooler, fuel system, and more. The hydraulic section covers all major components including the main valve, main pump, travel motor, swing motor, and swivel joint. The undercarriage section gives you every track component option. The operator’s compartment section covers the cab, seats, windows, doors, air conditioner, and all controls.

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Instant PDF Delivery – No Shipping, Any Device, Printable

This Komatsu PC400SE-8R PC400LCSE-8R parts book is delivered as an instant PDF download. No waiting for a physical book to arrive, no shipping costs, no risk of a damaged parcel. Once payment is complete, you can download the file and start using it immediately. The PDF works on any device – laptop, desktop, tablet, or smartphone – and you can print any page you need for the workshop. Print the exploded views for the job you are doing, mark them up, and take them to the machine. If you work on multiple machines, keep the PDF on your phone or tablet and search through it right at the machine. This is the practical, no-nonsense way to have the full parts catalog for your Komatsu PC400SE-8R or PC400LCSE-8R excavator always within reach.