Description

Koehring 6605 1987 Parts Catalog

You need a part for a Koehring 6605. You pull the old one off, and the number is worn down or missing. You guess. You order. It doesn’t fit. That’s time and money flushed. I’ve been turning wrenches since before most of you were born, and I can tell you the difference between a job that goes smooth and one that eats your lunch is having the right part number in your hand before you call the dealer. This Koehring 6605 1987 Parts Catalog – 86 pages of factory-sourced numbers – is the difference.

Page 1 has the note to the distributor telling you exactly where to write if you need to cross-reference. Check the serial number range. If your machine is 108301-108450, you need a different lower frame than a later unit. That’s the kind of detail that keeps you from bolting on a wrong component. The manual is laid out by groups – not some aftermarket reprint that lumps everything together. OEM documentation is the only way to be certain.

Crawler & Carbody: Undercarriage Parts Breakdown

Group G covers the crawler and carbody assembly. On page 1.1 you get the exploded view of the entire undercarriage: upper rollers, lower rollers, idler assemblies, crawler shoes, links, bushings. Each item has a part number, description, quantity, and the serial number range it applies to. Need a track shoe? Three options – 15.75″, 21.65″, or flat shoe. Reference number 19, 19-1, or 19-2. No guessing. You match your serial number and order exactly that. I’ve seen guys order the wrong upper roller because they didn’t check the serial range – this catalog keeps you straight.

Upper Engine, Fuel Tank: What’s in Group 4

Group 4 in the TOC is labeled “Upper Engine, Fuel Tank.” That’s the chapter you turn to when you need engine-related components – mounts, cooling, fuel system parts. The fuel tank itself, the sending unit, lines – all cataloged with factory numbers. If you’re dealing with a fuel leak or a cracked tank, you need the correct replacement. The manual groups it logically so you don’t hunt through 80 pages for one gasket. Engine parts are cross-referenced by serial number, just like the undercarriage.

Does This Catalog Cover the Electrical System?

Yes. Group 13 is the Electrical System. Wiring harness sections, switches, sensors, the alternator, starter – all broken down by part number. This isn’t a wiring diagram manual (that’s a different document), but for ordering the correct electrical components, this is your source. If you need the rotary joint fitting for the swing system? That’s in the Hydraulic System group, not here. Know what you’re looking for before you open the book.

7 Systems Covered in This 86-Page Parts Catalog

The table of contents lists seven main systems plus attachments: Crawler & Carbody, Upper Structure, Upper Engine & Fuel Tank, Swing System, Pump Drive, Hydraulic System, Operator’s Cab & Machinery Housing, Electrical System, and attachments like the blade. Each group has its own set of pages with exploded diagrams and parts lists. The 86 pages are dense with information. I count 16 distinct groups from G all the way through Attachment Options. You get the excavator attachment, blade attachment, and options like the rotary joint device.

Get the Right Part Number – Ref Numbers Explained

Every part on the diagram has a reference number. That number corresponds to a row in the parts list table. For example, on the crawler shoe page, reference 0 is the shoe assembly (15.75″), 0-1 is the 21.65″ shoe, and 0-2 is the flat shoe. The part numbers are right there: 730 4516, 730 4477, 730 4773. You call the dealer and read that number. No confusion. The manual even tells you to specify model number, serial number, and description when ordering. That’s the mark of a factory document – they expect you to use it correctly.

Alongside this catalog, you might also need the service manual for torque specs and procedures. The Koehring 6605 Parts Catalog I’m holding is parts only, but for repair instructions, look for the factory service manual. Other models like the Koehring T-S44, 644 1974 Parts Catalog – Factory OEM Parts Reference and Koehring S-155 1977 Parts Catalog – Factory OEM Parts Reference follow the same layout. If you work on different Koehring machines, those are worth having too.

If you’re new to ordering parts for heavy equipment, take 10 minutes to study the opening pages. The Automotive Industry Overview covers general manufacturing, but for your Koehring, this catalog is the only source that matters. Don’t trust aftermarket parts databases. They often omit serial range splits and superseded numbers. The Automotive Industry Overview won’t help you find a track pin either – stick with the factory book.

How do I know if this parts catalog covers my specific Koehring 6605 serial number?

Check page 1. The manual lists a serial number field where you write the machine’s serial. The parts pages show serial ranges for each subassembly. If your machine falls within 108301-108450, for example, you use the lower frame part 730 3399. If it’s 108451 and above, you need 730 4790. The catalog covers all production units up to 1987, but you must verify your serial number against the ranges listed on each page.

Can I use this to order engine gaskets or electrical components?

Yes.

Don’t keep wasting time matching parts by eye. Get the numbers from the source that Koehring used when building the machine. Access the Factory Manual and keep it on your tablet or print it out. Your workbench needs this book.