Komatsu PC400SE-8 PC400LCSE-8 PC400LC-8 Parts Book PDF – LEPBP40802 Illustrated Parts Catalog (Serial J30001-Up)

Description

Komatsu PC400SE-8, PC400LCSE-8 and PC400LC-8 Parts Book – LEPBP40802

This is the complete illustrated parts book for the Komatsu PC400SE-8, PC400SELC-8 and PC400LC-8 hydraulic excavators, covering machines from serial number J30001 and up and the SAA6D125E-5 engine from engine number 660029 and up. Published under document number LEPBP40802 with a publication date of 03-2012, it is the reference used to identify every assembly, sub-assembly and individual part number fitted to these machines. Whether you are ordering a replacement component, rebuilding a hydraulic circuit, chasing a discontinued bracket or simply confirming the correct fastener for a job, this is the catalog that shows you exactly what belongs where.

File Details

• Manual type: Illustrated Parts Book / Parts Catalog
• Brand: Komatsu
• Models covered: PC400SE-8, PC400SELC-8, PC400LC-8
• Serial number range: J30001 and up
• Engine: SAA6D125E-5, engine number 660029 and up
• Language: English
• Page count: 584
• File format: PDF
• Document number: LEPBP40802
• Publication date: 03-2012

Chapters Covered

• Engine Related Parts
• Cooling System
• Fuel Tank and Related Parts
• Electrical System
• Hydraulic System
• Main Frame and Related Parts
• Operators Compartment and Control
• Guard
• Swing Circle and Related Parts
• Travel and Lower Piping
• Under Carriage
• Work Equipment
• Mark and Plates
• Accessory
• Miscellaneous
• Services Kit

Engine Related Parts

The engine section opens the catalog and breaks the SAA6D125E-5 down the way a working technician expects it. You get a flywheel page, the crankshaft assembly with its main and thrust metal options, the vibration damper, and both piston and connecting rod groups with the piston ring pack (top, second and oil ring) and the rod bushings, bolts and dowels called out separately. Crank pulley variations are split between the non-hardening and hardening types, and the camshaft and camfollower is shown alongside the rocker arm and housing with its cover, gasket, rubber seals and bolts. Lubrication is covered by the oil pump assembly, the oil filter and piping, the oil cooler element with its cover and O-rings and the mounting hardware for the oil cooler. Fuel handling is one of the deepest groups in this Komatsu PC400SE-8 parts book: the fuel supply pump and common rail are shown together with the fuel supply and return piping, the common rail inner parts, the fuel supply pump (split into two halves with all internal components) and the drive gear. The fuel filter and piping pages appear in two thread variants (1-5/8 and 15/8), followed by the fuel priming pump and piping, the fuel air vent, the fuel injector and spill tube, the fuel return and the fuel controller. The cooling stack rounds out this chapter with the water pump mounting and air vent, the cooling fan (suction type), the fan pulley and drive belt (both standard and hardening pulley versions), the fan drive and the corrosion resistor. Charging and starting are covered by the alternator and mounting pages for 50A and 60A units (including the sandy and dusty specification and inner-parts breakdowns), the starting motor mounting for 7.5KW and 11KW units with protect cover, and the full inner-parts views for both starting motors. The electrical wiring pages close the chapter with the engine harness, harness support and the complete engine wiring diagrams. Name plate and caution plate pages appear here as well.

Cooling System

The cooling system chapter covers the radiator and its frame, the radiator mounting cushions and seals, the cooling fan shroud, the oil cooler and shroud, the after cooler and condenser with their mounting parts, the after cooler piping, the cover panels and radiator piping with the sub tank. Fan guard, sheet metal and the various sealing strips are also catalogued, so panel and bracket replacement is straightforward.

Fuel Tank and Related Parts

Fuel tank pages cover the tank itself (including the version for machines fitted with a fuel lift pump), the tank internal 1/3 breakdown, the fuel lines in three parts, the fuel line detail page and the water separator assembly with head, screen, baffle, case, nuts and rings. The water separator inner-parts page is handy when you need individual components rather than the complete assembly.

Electrical System

Batteries, clamps, covers and cables lead the electrical chapter, followed by the starting harness, the main harness in three parts, the working lamp wiring (including the version with the electric priming pump switch), additional work lamps with and without front guard, the horn, the travel alarm and the rear view monitoring system in single camera, twin camera and monitor-less configurations. This is the section most owners reach for when tracing a fault or adding a work light to a PC400LC-8.

Hydraulic System

The hydraulic group is by far the largest in this Komatsu parts book and is where the real value sits for anyone maintaining or rebuilding one of these machines. It begins with the hydraulic tank and its breather, then moves through the main valve connection parts in two halves with bracket, service valve plug and the drift-preventive arrangement. The main pump and its connection parts are catalogued, followed by every major line: suction, delivery (with and without in-line filter), oil cooler, return (single and one-actuator variants), drain, boom line in two halves, arm and bucket line with and without drift preventive, the drift-preventive (arm) valve group, the attachment main lines (L.H and R.H) with relief valves at 250 kg/cm2 and 220 kg/cm2 for the service valve, attachment return filter, accumulator lines, pilot filter and travel line. Swing line, LS line (standard and quick coupler), solenoid valve (valve body, hoses and bracket, single-actuator variants), pressure switch, PPC main line, accumulator valve, accumulator filter and accumulator complete the chapter. Note that many of the illustrations in this section are numbered in the 150xxx range in the PDF index; they are the source of truth for every hydraulic hose, flange, O-ring and fitting listed in the hydraulic group.

Main Frame, Operators Compartment and Guard

The main frame chapter covers the revolving frame in two halves and the boom foot pin (standard and 100-hour lubricating type). The operators compartment chapter is extensive: operator’s seat options (suspension, rigid and PVC leather), seat belt in 50mm and 78mm widths, luggage box net, top guard, front guard, half guard, front full guard, floor mats, rain visor, sun visor, window washer and the air conditioner compressor and piping. The operator’s cab is broken down into cab and window, front window, front lower window (standard and vandalism protection), 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 (with radio and KOMTRAX), KOM. film antenna (ORBCOM type), monitor and cover, monitor cover, luggage plate, monitor duct, air duct with and without air conditioner, partition and filter, sub plate and relay, air conditioner controller, AC control and KOM, main harness clamp, rear cover in KOMTRAX, non-KOMTRAX and vandalism variants, foot cover without air conditioner, floor frame, travel control, foot rests L.H and R.H, first attachment control, base plates, harness, harness clamp and earth, window washer hose, lever L.H, valve L.H, console L.H, P.P.C lock lever and radio, arm rest L.H and R.H, lever R.H, valve R.H, console R.H, air conditioner unit, air conditioner hose, heater hose, P.P.C piping for the travel valve, P.P.C hose clamp, P.T block and seal, rear camera cable, floor mounts, PPC work line clamp and model selection connector switch. The Guard chapter follows with the hood in four parts, machine cab frame, left and right side doors, partition, cover, battery case, hand rail, rear view mirrors (single L.H, R.H and dual), counterweight at 9220 kg with its mounting shims, and the under covers for the revolving frame in L.H, centre and R.H heavy-duty variants including the fuel refill pump versions.

Swing Circle, Travel, Undercarriage and Work Equipment

The swing circle chapter covers the swing circle assembly, swing machinery (standard and optional), swing motor connecting parts and the swivel joint. Travel and lower piping is short and to the point: travel piping (standard and LC) and final drive assembly split by serial number (J30001-J30337 and J30338-up). The undercarriage chapter is one of the biggest and covers the front idler, idler cushion, carrier roller, track shoe options in 600mm and 800mm triple grouser with hole configurations (some in LC and STD variants), track frame with frame, track roller, centre guard and full roller guard, grease bath and step, and the under cover for the track frame. The work equipment chapter then walks the full digging end: boom (7.0m boom in 100-hour and 500-hour greasing types), boom top and bottom pins, boom bucket cylinder line, boom arm cylinder line with serial-number splits, boom blind parts, boom lubricating line, boom working lamp and spacer, boom additional line and clamp, boom cylinder (100-hour STD and 500-hour option), boom cylinder top pin for both greasing types, arm cylinder with resistant (500-hour), arm cylinder for 2.4m arm and generic 100-hour arm cylinder, arm in 3.4m and 2.4m variants (500-hour and 100-hour greasing types, with and without additional piping), bucket link, bucket cylinder pages for 100-hour and 500-hour, side cutter, side shroud and hook for the bucket, and the bucket-less plate and collar.

Mark and Plates, Accessory, Miscellaneous and Services Kit

The Mark and Plates chapter covers decal and plate sets for English, STD, LC and KI spec, the lubrication standard charts for both 500-hour and 100-hour greasing types, cab windshield lock operation cautions, Komatsu logo plates for counterweight and boom, arm caution plates, top and front guard caution plates (English and Indonesian), air cleaner service instructions (English and Indonesian), one-accumulator caution, swing or backing-up warning plates, certification mark plates and cab front full guard level 2 plates. The Accessory chapter lists the spare parts box, gaskets and seals, various cartridges and filters, V-belt, element and O-rings. Miscellaneous covers the fuel self supply pump (standard and the extended bad fuel and poor fuel arrangement with water and dust spec), blind parts for body and 1-actuator configurations, blind parts for brust valve, export tool, engine drain hose and battery cut off. The Services Kit is where a lot of the service-relevant content sits: swing machinery assembly supply parts, shoe bolt and nut service kit, track link supply parts at 92 sets, air cleaner inner parts, precleaner inner parts, fuel self charger pump inner parts, rubber antenna, operator’s seat assembly and PVC leather seat assembly, and then the big one, the main pump in 12 sections, boom cylinder for 100-hour and 500-hour lubricating, arm cylinder with and without resistant, arm cylinder for 2.4m arm, bucket cylinder for 100-hour and 500-hour, swivel joint, swing motor in three sections (two variants by serial), travel motor in three sections (two variants by serial), main valve in 20 sections and 23 sections (two control valve part numbers by serial), PPC valve for travel and work equipment with single attachment, accumulator (AL300-1) inner parts, filter inner parts, breather for hydraulic tank, valve for accumulator and the air conditioner unit with all its sub-components.

Why This Komatsu PC400-8 Parts Book Belongs in Your Workshop

Ordering the wrong part on a 40-tonne excavator is expensive. A single misidentified O-ring, spacer or hose end can take a machine out of service for days while the correct item is sourced. This LEPBP40802 parts book removes that risk by showing you the exact exploded view, the index number and the Komatsu part number for every assembly on the PC400SE-8, PC400SELC-8 and PC400LC-8. It supports the full range of jobs a working machine demands: engine component replacement on the SAA6D125E-5, fuel system service on the common rail, hydraulic line and valve rebuilds, swing and travel motor repair, undercarriage and track frame work, boom and arm cylinder overhaul, cab and operator station replacement, and electrical fault-finding across the main, starting and working lamp harnesses. Having the correct parts catalog in front of you also matters when you are working from a dealer’s parts counter, sourcing from an aftermarket supplier, or cross-referencing a superseded part number from an earlier serial range. The 584-page PDF is delivered instantly after payment, no shipping and no waiting for a disc. It opens on any device, is printable for the workshop bench, and you can keep it on the same tablet or laptop you already use for service manuals. Load it, search it, print the pages you need for the job at hand, and get the machine back to work.

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