Komatsu PC400SE-8R PC400LCSE-8R Hydraulic Excavator Parts Book – LEPBP40806

Description

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

This is the complete illustrated parts catalog for the Komatsu PC400SE-8R and PC400LCSE-8R hydraulic excavators, document number LEPBP40806. It covers every assembly on the machine from the cylinder head down to the track shoes, with exploded-view illustrations and itemized part number tables for accurate identification and ordering. The book applies to serial numbers J30001 and up for both the PC400SE-8R and PC400LCSE-8R, and covers the SAA6D125E-5 engine from engine serial number 660029 onward.

File Details

• Manual type: Illustrated Parts Book / Parts Catalog
• Brand: Komatsu
• Models: PC400SE-8R, PC400LCSE-8R
• Engine: SAA6D125E-5
• Serial numbers: PC400SE-8R J30001-UP; PC400LCSE-8R J30001-UP
• Engine serial: 660029 and up
• Document number: LEPBP40806
• Language: English
• Format: PDF (instant download)
• Page count: 624 pages

Chapters Covered

The parts book is organized by assembly groups, each with an exploded-view illustration and a matching part number list. Every major system of the excavator is represented, including:

• Engine: Cylinder head, cylinder block, front cover, idler gear, cam follower cover and breather, oil pan and suction tube, flywheel housing, flywheel, crankshaft, vibration damper, piston and connecting rod, crank pulley, camshaft, oil pump, oil filter and piping, oil cooler, water drain valve, fuel supply pump and common rail, fuel injector and spill tube, fuel return, fuel controller, water pump and air vent, cooling fan, fan pulley and drive belt, fan drive, corrosion resistor, alternator (50A / 60A), starting motor (7.5 kW / 11 kW), electrical wiring, name and caution plates
• Engine related parts: Damper and pump, engine mounting, air cleaner connection, corrosion resistor
• Cooling system: Radiator and frame, oil cooler and shroud, after cooler and condenser, after cooler piping, cover, radiator piping and sub tank, sheet, fan guard
• Fuel tank and related parts: Fuel tank, fuel lines, additional fuel filter
• Electrical system: Battery, main harness, working lamps, additional front and rear work lamps, horn, travel alarm, rear view monitoring system
• Hydraulic system: Hydraulic tank, main valve, main pump, suction line, delivery line, oil cooler line, return line, drain line, boom line, arm and bucket line, drift preventive, attachment lines, relief valves, travel line, swing line, LS line, solenoid valves, pressure switch, PPC main line, accumulator
• Main frame and related parts: Revolving frame, boom foot pin, operator’s compartment, operator’s seat, seat belt, top guard, front guard, half guard, floor mat, rain visor, sun visor, window washer, air conditioner compressor and piping, 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, plug bolt, monitor and cover, air duct, partition and filter, sub plate and relay, air conditioner controller, main harness clamp, rear cover, foot cover, floor frame, travel control, foot rest, lever and valve, console, PPC piping, P.T block and seal, rear camera cable, floor mounts, PPC work line clamp, switch
• Guard: Hood, machine cab frame, left and right side doors, partition, cover, battery case, hand rail, rear view mirrors, counterweight, under covers
• Swing circle and related parts: Swing circle, swing machinery, swing motor, swivel joint
• Travel and lower piping: Travel piping, final drive
• Under carriage: Front idler, idler cushion, carrier roller, track shoes, track frame, track roller, center guard, full roller guard, grease bath and step, under cover
• Work equipment: Boom (7.0 m and 6.7 m), boom cylinder, arm cylinder, arm (3.4 m and 2.4 m), bucket link, bucket cylinder, buckets (1.7 m³, 1.9 m³, 2.4 m³ SE, 2.6 m³, 2.8 m³ SE, 3.0 m³, 3.2 m³, tiger buckets), side cutter, side shroud, hook
• Mark and plates: Decal and plate (English / Indonesian / for LC), lubrication standard chart plates, caution plates, Komatsu logo, service instruction, plate for swing or backing up warning
• Accessory: Spare parts box, cap and overall, tool kit
• Miscellaneous: Fuel self charge pump, refueling pump, blind parts, export tool, engine drain hose, battery cut off
• Service kits: Swing machinery ass’y, shoe bolt and nut kit, track link, air cleaner, precleaner, fuel self charger pump, rubber antenna, operator’s seat ass’y, main pump, boom cylinder, arm cylinder, bucket cylinder, swivel joint, swing motor, travel motor, main valve, PPC valve, accumulator, filter, breather, valve for accumulator, air conditioner unit

The document runs across a wide range of content areas that make it the single most useful reference for anyone maintaining, repairing, or rebuilding a PC400SE-8R or PC400LCSE-8R. Every assembly is illustrated with an exploded-view drawing on the left page, and the corresponding part numbers, descriptions, quantities, and applicable serial number ranges are listed on the right page. Where applicable, part number changes tied to serial breaks are called out so the correct version for a given machine can be ordered without guesswork. Symbols used in the part number and description columns — such as A1, A2, B1, B2, C1, C2, and KIT — are explained in the front matter so buyers can interpret interchangeability, supersession, and semi-finished part notation correctly. Engine-related sections include the SAA6D125E-5 diesel with common rail fuel system, and the electrical sections cover starting, charging, work lamps, and optional rear view monitoring. The hydraulic system sections cover the main pump, main control valve, PPC valves, solenoid valves, accumulators, and all high-pressure lines for the boom, arm, bucket, travel, and swing circuits.

Why This Parts Book Matters for Your Machine

Ordering a part for a 40-ton excavator is not the place for guesswork. A part number that looks right but belongs to a different serial range, a different variant, or a superseded assembly can waste days of downtime and hundreds of dollars in returned freight. This parts book exists specifically so that the person ordering — whether a workshop tech, a parts counter, or an owner-operator — can look at the exploded-view illustration, identify the exact index number, and match it to the correct part number, description, and quantity for the machine in front of them. The serial number columns on the right-hand pages of each listing tell you which version applies to your machine, which is critical on a model that had multiple running production changes across the J30001-UP range.

Coverage and Serial Ranges

The book explicitly states its coverage on the cover and in the opening pages: PC400SE-8R serial J30001-UP, PC400LCSE-8R serial J30001-UP, and engine SAA6D125E-5 engine serial 660029 and up. Where assemblies changed within that window — for example the flywheel housing, fuel supply pump and common rail, fuel filter and piping, front cover accessory, cam follower cover and breather, and numerous hydraulic and cab components — the parts listing gives the specific serial break so the correct part for a given machine serial number can be identified. This makes the book usable across the entire production run, not just for the earliest units.

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Instant Download

This is a PDF parts book delivered instantly to your device after purchase. There is no shipping, no waiting on a disc or a printed binder, and no risk of a physical copy getting damaged or lost in the workshop. You can open it on a laptop or tablet in the service bay, print the specific illustrated pages you need for a particular job, or keep the whole book on a shop computer for quick lookup. Because it is the factory parts catalog for the PC400SE-8R and PC400LCSE-8R, it gives you the same part identification information a Komatsu parts counter would use, in a format you can carry with you and search at your own pace.

Who This Book Is For

Heavy equipment mechanics rebuilding or resealing a component, fleet maintenance departments stocking critical spares, parts managers sourcing substitutes and supersessions, and owner-operators who want to order the right component the first time will all get direct value from this PC400SE-8R and PC400LCSE-8R parts book. The exploded views make it easy to see how an assembly goes together and which fasteners, seals, bushings, and small parts sit behind the main component — the exact parts that get forgotten on a first order and cause a second shipment. With 624 pages covering the complete machine, this is the most comprehensive parts reference available for these two excavator models, and it is the fastest way to turn a machine serial number and an illustration into a correct, orderable part number.