Description

Doosan DX300LC Parts Catalog

If you’re tearing into a Doosan DX300LC excavator and you’re hunting down a part number you can trust, you’ve been burned by aftermarket catalogs before. I’ve seen guys order a hydraulic pump seal kit based on a generic cross-reference and end up with a leak two days later. That’s why this 934-page Doosan DX300LC Parts Catalog matters. It’s the OEM breakdown – exploded views, factory part numbers, and the exact bolt sizes you need to order from the dealer. No guessing.

Engine Section: From Cylinder Block to Turbo Charger

The engine section alone runs 36 figures covering every major subassembly: cylinder block, timing gear case, flywheel housing, oil seal, breather pipe, driving system, cylinder head, cylinder head cover, timing system, oil pump, oil filter and oil cooler, oil pan, cooling water pipe and thermostat, water pump, cooling fan, exhaust manifold, intake manifold, turbo charger, intake stake, injector, fuel injection pipe, injection pump, injection pump drive, engine control, fuel system, alternator and alternator mounting, lifting hook, starter, air heater. Page 1 lists the full contents. Each figure includes an exploded view with numbered callouts matched to a parts list. You get the OEM part number, description, and quantity per machine.

Body Parts and Hydraulic Sections: Not Just a List

Body parts cover the main frame, counter weight, radiator mounting, muffler, CAC piping, air cleaner, pump mounting, swing motor, fuel tank, fuel piping, oil tank, oil cooler piping (three sub-sections), main piping for pump, boom, arm and bucket, swing, travel circuit, and pilot piping. That’s 200+ pages of hardware you can’t find in any aftermarket cross-reference. The hydraulic section – which is the core of the catalog title – gives you the same factory treatment for every valve, hose, fitting, and seal. If you’re rebuilding a control valve or replacing a hose assembly, you will find the exact clamp size and thread pitch.

934 Pages – Why That Number Matters

Thickness isn’t a flex; it’s coverage. A 200-page aftermarket catalog skips the details that stop a job cold – like the correct O-ring groove depth on the swing motor cover. This catalog’s 934 pages include every figure from Fig. 001 through Fig. 036 in the engine section, plus the body and hydraulic chapters that continue into the 1100-series figures. You get the full picture, not a summary. For the price of a couple of dealer-ordered wrong parts, you own the reference that saves those trips.

Does This Catalog Cover the Fuel Injection System?

Yes. Figures 021 through 026 in the engine section cover the injector, fuel injection pipe, injection pump, injection pump drive, engine control, and fuel system. You also get the sensor (Fig. 030) and wire harness (Fig. 031) for the level gauge. If you need to trace a fuel leak or order a replacement injector line, the exact part number is right there. The catalog also includes the power steering pump (Fig. 033) and air compressor (Fig. 034), plus both overhaul gasket kits – all pieces and top set – in Figs. 035 and 036.

Why Factory OEM Trumps Third-Party Copies

I’ve been a tech for 28 years. Aftermarket catalogs often re-draw the exploded views and change the part numbers to something that only fits their inventory. Then you order a “compatible” part and it’s a quarter-inch too short. This Parts Catalog comes from Automotive Industry standards – direct from Doosan factory documentation. The part numbers are the ones your dealer uses. The diagrams are scanned from the original prints, not redrawn by some intern. That means the bolt pattern on the flywheel housing (Fig. 003) matches the actual casting. You won’t find a better source for ordering the right water pump for your DX300LC.

Related Manuals for the Doosan DX300LC

• DOOSAN DX300LC 2008 Shop Manual
• Doosan DX300LC 2012 Technical Manual – Factory Overview
• Doosan DX300LC 2005 Operators Manual – Factory OEM 285 Pages

Is this a repair manual with step-by-step instructions?

No. This is a parts catalog. It shows exploded views and lists OEM part numbers. You need the shop manual for torque specs and disassembly procedures.

Can I use this to verify part fitment before I order?

Absolutely. Each figure includes a detailed assembly view with the correct orientation of seals, gaskets, and hardware. For example, the engine mounting figure (Fig. 032) shows the exact bracket and isolator arrangement for your DX300LC. I’ve seen guys save a full day of downtime by comparing the catalog diagram against a worn part before calling the parts counter. If the bolt pattern doesn’t match the diagram, you know you have the wrong component. The 934-page depth means nearly every nut, bolt, and washer is accounted for – including the 10mm flange bolt that holds the pilot piping bracket on the main frame. That’s the kind of detail that keeps a job from stopping at 4:30 PM on a Friday.

Access the Factory Manual now and keep your Doosan DX300LC running with genuine OEM parts. Stop wasting time on aftermarket guesswork.