Komatsu PC300-8 PC300LC-8 Parts Book PDF – SAA6D114E-3 Engine – LEPBP30803

Description

Komatsu PC300-8 and PC300LC-8 Parts Book — Complete Illustrated Catalog for SAA6D114E-3 Excavators

This Komatsu PC300-8 PC300LC-8 Parts Book is the full illustrated parts catalog for the PC300-8 and PC300LC-8 hydraulic excavators equipped with the SAA6D114E-3 diesel engine. Issued under document number LEPBP30803, the catalog covers machine serial numbers from J30001 and up and engine serial numbers from 26854260 and up. Every assembly in the machine — from the engine internals and fuel system through the hydraulic valve blocks, swing machinery, undercarriage, and operator’s compartment — is broken down into exploded-view illustrations with itemized part numbers, making this the reference you need to order the right component the first time.

File Details

• Manual Type: Illustrated Parts Book / Parts Catalog
• Brand: Komatsu
• Models Covered: PC300-8, PC300LC-8
• Engine: SAA6D114E-3
• Machine Serial Numbers: J30001 and up
• Engine Serial Numbers: 26854260 and up
• Document Number: LEPBP30803
• Language: English
• File Format: PDF
• Page Count: 557 pages

Chapters and Systems Covered

The Komatsu PC300-8 PC300LC-8 parts book is divided into the following major groups:

• Engine Assembly: cylinder block cover, cabin heater plug, breather hose, oil level sensor, oil pan and suction tube, oil level gauge, flywheel housing, flywheel, flywheel mounts, crankshaft, damper, piston, crank pulley, rocker lever, camshaft, front gear train cover, accessory drive pulley
• Lubrication System: oil pump, oil filter and piping, oil filter piping related parts, oil cooler
• Fuel System: fuel inlet filter fitting, fuel pump, fuel filter (standard and extra poor fuel versions), fuel filter piping, fuel piping, fuel injection piping, additional fuel filter, fuel transfer pump, fuel system accessories, fuel transfer pump wire cover, injector, electronic controller and related piping
• Cooling System: water inlet connection, water pump, fan drive pulley, fan drive mounting, fan drive belt, cooling fan, corrosion resistor, radiator and oil cooler, shroud, after cooler and condenser, radiator piping, stay and sound sheet, air cooler piping and sub tank
• Electrical System: battery, electrical wiring (starting harness, main harness 1/3, 2/3, 3/3, working lamp), work lamp assemblies, additional work lamp, additional rear work lamp, horn, back-up alarm unit, rear view monitoring system
• Charging and Starting: alternator (60A), water pump drive belt, alternator mounting, belt tensioner, starting motor (7.5kW and 11kW), starting motor mounting
• Air and Exhaust: air cleaner (with and without pre-cleaner), muffler drain tube, after cooler, water separator
• Hydraulic System: main pump and connecting parts, suction line, delivery line (with in-line filter), oil cooler line, return line, drain line, boom line, arm and bucket line, drift preventive (arm), attachment lines (main line L.H/R.H, return filter, accumulator, pilot filter), travel line, swing line, LS lines, solenoid valve (valve, hose and bracket, clamp), PPC main line (hose), hydraulic tank (1/2), main valve (additional service valve kit, connecting parts 1/2 and 2/2, valve bracket, service valve plug), relief valves (250 kg/cm2 and 220 kg/cm2)
• Operator’s Compartment: operator’s seat (suspension, air suspension with heater, rigid, PVC leather), seat belt (50mm, 78mm, luggage box net), top guard, front guard, half guard, front full guard, floor mat (standard and 1-actuator), rain visor, sun visor, window washer, air conditioner (compressor and hose), operator’s cab (cab and window, front window, front lower window, front low 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 and GALEO plate, cab in parts — monitor and cover, monitor cover, luggage plate, monitor duct, air duct, partition and filter, sub plate and relay, air conditioner controller, AC and KOMTRAX controller, main harness clamp, rear cover, foot cover, floor — frame, travel control, foot rest L.H/R.H, 1st attachment control, base, harness, harness clamp and earth, window washer hose, lever L.H/R.H, valve L.H/R.H, consol L.H/R.H, air conditioner unit, air conditioner hose, heater hose, P.P.C piping for travel valve, P.P.C piping for pilot valve, P.P.C hose clamp, P.T block and seal, rear camera cable, floor mounts, PPC work line clamp, switch (model selection connector)
• Swing and Travel: swing circle, swing machinery, swing motor (connecting parts), front idler, idler cushion, track roller, track roller for LC, carrier roller, track shoe (triple grouser with hole — 600mm, 700mm, 800mm wide), track frame, track frame for LC, under cover (for track frame), center guard, center guard for LC, full roller guard, full roller guard for LC
• Work Equipment: boom (boom and top pin, heavy duty, arm cylinder line, lubricating line, bucket cylinder line, cylinder pin and working lamp, additional line for additional piping), boom cylinder (100 hours), arm cylinder (100 hours and 500 hours), arm (2.2M, 2.6M, 3.2M heavy duty — 100 hours and 500 hours greasing type), bucket link, bucket cylinder (100 hours and 500 hours), bucket (1.2M3, 1.4M3, 2.3M3 — horizontal pin type, heavy duty, tiger tooth), side cutter, hook, parts for less arm
• Frame and Covers: revolving frame, boom foot pin, under cover (revolving frame — L.H, center, right, heavy duty versions), counter weight (5471 kg, 6371 kg), counter weight mounting
• Machine Cab and Covers: hood, frame (machine cab), left side door, right side door, partition (machine cab — engine room front, pump and radiator side), cover upper (machine cab — standard and with pre-cleaner), battery case, hand rail, rear view mirror (L.H single, R.H single, standard)
• Mark and Plates: decals and plates (English — lettering type and standard), lubrication standard chart (500 hours and 100 hours greasing type), caution plates (cab windshield lock operation, arm, top guard, front guard, 1-accumulator, swing or backing up warning), KOMATSU logo (boom and counter weight), plate (load rating chart), service instruction (air cleaner)
• Accessories and Service Kits: spare parts, cap and overall, tool kits, fuel self charger pump (and hose), blind parts (body, boom — 1 actuator, for component), engine drain hose, swing machinery (supply only), shoe bolt and nut service kit, track link (90 set), air cleaner (inner parts), precleaner (inner parts), fuel pre-filter, rubber antenna, operator’s seat assembly (standard and PVC leather), main pump (1/11 through 12/12), boom cylinder, arm cylinder, bucket cylinder, swivel joint, swing motor (1/3 through 3/3), travel motor (1/3 through 3/3), travel motor and final drive (1/3 through 3/3), main valve (1/20 through 20/20), main valve 1-actuator (1/23 through 23/23), PPC valve (for travel 1/2 and 2/2, for work equipment, for 1-attachment), selector valve, accumulator, filter, solenoid valve, valve for accumulator, compressor assembly, air conditioner unit, machine cab cover with pre-cleaner

In total, this Komatsu PC300-8 PC300LC-8 parts catalog PDF delivers hundreds of illustrated assembly breakdowns across every major system on the machine. The catalog is not limited to the engine or hydraulics — it extends from the smallest mounting bolt and O-ring to complete cylinder assemblies and electronic controllers. Every exploded diagram pairs with a parts list containing reference numbers, Komatsu part numbers, descriptions, quantities, and the serial number range each part applies to. That level of detail is what makes a factory parts book different from a generic aftermarket catalog: you can match the exact variant installed on your machine, including changes that occurred mid-production across the J30001-and-up range.

Why This Parts Book Matters for PC300-8 and PC300LC-8 Owners

Ordering the wrong part for a 30-ton excavator is expensive and slow. A parts book tied to your exact serial number range removes the guesswork. The PC300-8 PC300LC-8 parts book LEPBP30803 shows you how each assembly comes apart, which fasteners and seals are used, and which part numbers are interchangeable or superseded within the covered serial range. For workshops carrying out engine overhauls on the SAA6D114E-3, hydraulic valve servicing, undercarriage rebuilds, or cab and electrical repairs, this catalog functions as both a disassembly reference and an ordering tool. Technicians can identify a component visually, note the item number, and cross-reference it to the parts list on the same page without leaving the diagram.

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This Komatsu PC300-8 PC300LC-8 Parts Book PDF is delivered as an instant-download PDF — no shipping, no waiting for a physical book to arrive. Open it on a laptop in the workshop, a tablet on the machine, or print the specific pages you need for the job at hand. All 557 pages are present in a single PDF file, including the complete exploded-view illustrations and itemized parts tables for the SAA6D114E-3 engine and every major assembly on the PC300-8 and PC300LC-8.