Komatsu PC05-6F Parts Catalog – The Only Parts List You Should Use

If you’re ordering parts for a Komatsu PC05-6F hydraulic excavator and you’re using a third‑party “cross‑reference” list, you’re wasting time. I’ve seen mechanics order the wrong seal kit three times because some aftermarket catalog mashed part numbers together. This is the factory Parts Catalog – 157 pages of OEM breakdowns that tell you exactly what goes where. Serial numbers start at F10001 and up, so if your machine falls in that range, this book is your reference.

Parts Ordering Codes: What Those Symbols Mean

Page 3 of the catalog spells out the symbols. A square means the part above supersedes the one below. A circle means interchangeability. A triangle means the part ships as a semi‑finished piece that needs rework. Ignore these and you’ll order a raw casting instead of a finished bracket. The manual even marks kit components with “KIT” so you don’t buy individual bolts when a whole seal set is cheaper. This is the kind of detail aftermarket reprints skip.

Serial Number Range: F10001 and Up

Every PC05-6F covered here has a serial number starting with F10001. If you’ve got an older machine below that range, this catalog won’t match. That’s another reason you buy OEM – the factory groups parts by serial number breaks. The foreword forces you to specify model, engine serial, and service meter reading when ordering. That’s not bureaucracy; that’s making sure you get the right part the first time.

7 Systems Broken Down by Figure Number

Figure numbers aren’t continuous – they jump. That’s how Komatsu organizes groups: engine, hydraulic pump, swing gear, track frame, controls, cab, electrical. Each figure lists quantity, part number, and part name with codes. If you see a dot (.) before a name, that part is a subcomponent of the assembly above it. Two dots (..) means it’s a sub‑subcomponent. This hierarchy saves you from ordering a complete assembly when you only need a single bushing.

Why Aftermarket Parts Catalogs Get You in Trouble

I’ve seen photocopied “parts lists” that combine multiple machine models into one table. The Komatsu factory catalog prints the actual part number for PC05-6F only. When a code like □ appears, it means the listed part is replaced by the part directly above it. Aftermarket books never show those codes. You’ll end up with a part that fits a PC05-7E but not your machine. Then you’re waiting another week for the correct delivery. Stick with the original.

FAQ

Does this catalog include torque specs for bolts?

No. This is a parts catalog, not a service manual. It lists part numbers, quantities, and ordering codes only. For torque values you need the factory shop manual.

Can I use this catalog for a Komatsu PC05-6E model?

Possible but not guaranteed. The PC05-6F has specific serial number breaks from F10001. Earlier models may share some parts, but the catalog only certifies fitment for the PC05-6F. Cross-check your machine’s serial against the range stated.

What do the symbols like □ and ○ mean in the parts list?

Page 3 explains every code. □ means the part in the line above is the replacement for the lined item. ○ means the two parts are interchangeable. The catalog gives you the exact supersession logic – no guessing.

How many pages is this, and is it a reprint?

157 pages. Original OEM digital scan – not a photocopy. Each page shows the Komatsu logo and part numbering format. No aftermarket watermark.

When you need to order a hydraulic piston or a track roller for your Komatsu PC05-6F, this is the document that keeps you from buying the wrong piece. this Wikipedia article on diesel engines might tell you how the engine works, but this catalog tells you which part number to write on the order form. I’ve got three other Komatsu catalogs on my shelf: FAI Komatsu 67-80DT Parts Catalog – OEM Hydraulic Steering Piston List, Komatsu WH609-1 WH613-1 Parts Catalog | 347 Pages OEM, and Komatsu PC14R Parts Catalog – Order Correct Parts Fast. Each one follows the same factory coding system. Download the Factory Manual from this page and you’ll never call the parts counter asking “is this the right one?” again.

• FAI Komatsu 67-80DT Parts Catalog – OEM Hydraulic Steering Piston List
• Komatsu WH609-1 WH613-1 Parts Catalog | 347 Pages OEM
• Komatsu PC14R Parts Catalog – Order Correct Parts Fast