Description

Komatsu PC190LC, NLC-8 Parts Catalog – 790 Pages of Factory Specs

I’ve been twisting wrenches since before most of you were born, and nothing burns my breakfast like ordering a part that doesn’t fit because some aftermarket catalog was put together by a guy who’s never touched a diesel cylinder. If you’re wrenching on a Komatsu PC190LC, NLC-8 Parts Catalog – and yes, that’s the actual machine – you need the real deal. This is the OEM factory print, 790 pages, straight from Komatsu. No reprints, no third-party guesswork. You get the same part numbers and exploded views the dealership uses.

A0 Engine Cylinder Head: What You’ll Find

Open to section A0 and you’re staring at the engine cylinder head and everything bolted to it. Cylinder head cover, breather, air intake manifold, turbocharger – all with individual index numbers. Need a heat shield for the turbo? Page 73 shows the exact Komatsu part number and whether it’s still available. The manual breaks down the EPA 3rd regulation turbocharger assembly so you don’t order the wrong flange. this Wikipedia article on diesel engines won’t tell you that.

Why 790 Pages Matter

Parts catalogs that skim on detail cost you money. This one has 790 pages because it lists every single washer, O-ring, and bracket. Section B0 covers the engine cylinder block – rocker arms, tappets, front cover, flywheel housing, oil pan, crankshaft, pistons, connecting rods. I’ve seen guys order a piston and get the wrong size because they used a generic listing. With this catalog, you match the serial number (K50001 and up for the machine, SAA4D107E-1D engine from 21872538 and up) and the part number is right there. That’s the difference between a Monday morning job and a Friday night headache.

Fuel Injection System: Factory Part Numbers

Section D0 covers the engine fuel system – injection pump, controller, injector, piping, filters. If you’re dealing with the North America EPA 3rd regulations setup, the manual separates those parts explicitly. There’s a pre-filter, additional filter mounts, and a fuel system accessory list. No guessing which cartridge fits the older vs. newer filter housing. this Wikipedia article on diesel engines might explain common-rail theory, but it won’t give you the Komatsu part number for the fuel injection controller bracket.

Get the Right Cylinder Block Parts

B0 isn’t just about the block itself – it includes the torque converter cooling, cabin heater plug, vibration damper, rear gear housing. The parts list tells you which parts are assemblies (index marked with a dot) and which are individual. If the rocker arm assembly is listed as a sub-assembly, you’ll see every component under it with its own part number. That’s how you avoid buying a whole assembly when you only needed a valve cap. FAI 67-80DT Hydraulic Steering Piston Parts List is a different beast – this Komatsu catalog is for the whole excavator.

Here’s the truth: aftermarket catalogs often skip the minor parts like the breather related plug or the cylinder block plug. Then you get halfway through a rebuild and realize you’re missing a $4 seal that holds 50 psi of oil. Not on my watch. This catalog has every plug, sensor, and bracket from the engine oil level sensor to the coolant ventilator.

OEM vs Aftermarket Parts Catalogs

I’ve had customers bring in parts from aftermarket “cross-reference” books that had the wrong thread pitch on a fuel injection pump mounting bolt. That’s a week of downtime and a burned check. OEM documentation like this one is verified against the actual production runs. The manual even includes codes (A1, B1, C1) that tell you if a part is superseded, discontinued, or only available as an assembly. You don’t get that from a third-party vendor. Komatsu WH609-1 WH613-1 Parts Catalog | 347 Pages OEM covers a different machine, but the philosophy is the same: factory data only.

Does This Parts Catalog Include Torque Specs or Service Procedures?

Let me be clear: this is a parts book, not a service manual. It tells you what part number to order, not how to install it. If you need the torque sequence for the cylinder head bolts, you need the separate service manual. But if you’re rebuilding an Engine and you want to confirm the exact piston ring set or the gasket kit, this catalog is your bible. Komatsu PC14R Parts Catalog – Order Correct Parts Fast is another option for smaller machines.

Does this catalog include torque specs?

No, it’s a parts catalog – part numbers and exploded views only.

What engine serial numbers are covered?

SAA4D107E-1D engines from serial number 21872538 and up, as stated on page 1.

Can I use this to rebuild my entire engine?

Absolutely. Sections A0 (cylinder head), B0 (cylinder block), C0 (lubricating system), D0 (fuel system), E0 (cooling system), and F0 (electrical) list every component from the crankshaft to the thermostat. You’ll see the part numbers for the cylinder head gasket, piston, connecting rod, oil pump, water pump, alternator mounts, and more. The catalog even includes field repair service parts in section Y0 for overhauls. Just cross-check your machine serial number to ensure compatibility.

How do I order parts from this catalog?

Use the part number from the parts list column, and contact your nearest Komatsu distributor. Include the machine model, serial number, and service meter reading as noted in the foreword.

If you’re serious about keeping that Komatsu PC190LC or NLC-8 running without chasing wrong parts, get the factory documentation. Access the Factory Manual from AutoRepairManuals and keep it on your tablet or print it out for the toolbox. It’s the cheapest insurance against a mistake that costs you a weekend and a $400 bolt.