Description

Koehring 6611 Parts Catalog

You have a Koehring 6611 Parts Catalog in your hands—or on your screen—and you need to find the right part number. Aftermarket catalogs mix up revisions, miss supersessions, and waste your time with wrong numbers. This 90-page factory document from Koehring Cranes & Excavators gives you the genuine part numbers, exploded views, and serial number ranges. If you are ordering parts for the undercarriage, engine, fuel system, or electrical side, you need the factory breakdown. I have seen too many guys bolt on a part that almost fits because they used a third-party list. That costs money and downtime. This catalog stops that.

Crawler & Carbody Group: Track Shoe and Link Breakdown

The crawler group (Group G) on page 5 lists shoe assemblies for 19.7″, 23.6″, and 27.5″ widths. You get part numbers like 730 1554, 730 2160, 730 1583 for the shoes, plus track link assemblies, master links, bushings, pins, and the 156 shoe bolts. The lower frame assembly on page 4 shows the frame, covers, bolts, and lock washers. Match your serial number to the column on the left—1047001- and up. That matters because Koehring changed shoe widths and link designs across production runs. Ordering wrong track links means pulling the whole undercarriage apart again. Not worth it.

Upper Engine and Fuel Tank: Sourcing Fuel System Parts

The manual covers the Upper Engine, Fuel Tank group with all the parts that mount the engine and the fuel tank itself. Fuel lines, tank brackets, engine mounts, and related hardware are listed with factory part numbers. If you need a fuel cap, tank drain, or the bracket that holds the primary filter, this section has the number. Do not trust an aftermarket cross-reference. Koehring used proprietary fittings on some early 6611 machines. The catalog gives you the exact Koehring part number to order from your dealer. It also includes the serial number break points for changes in the fuel tank design.

Electrical System: From Lights to Control Modules

The Electrical System group lists alternators, starters, wiring harnesses, switches, gauges, and lights. Every connector and relay has a part number. If you are chasing a charging system fault and need an alternator, you look it up here—not on a generic parts store shelf. The catalog covers the complete electrical system for the 6611, including the battery cables, fuse box, and any optional lighting. Page 3 shows the group index; the Electrical System section runs several pages in the middle of the book. Using the wrong starter can damage the flywheel ring gear. Factory numbers eliminate that risk.

Hydraulic System and Pump Drive: Critical Seal and Filter Numbers

Hydraulic pumps, pump drive gear train, control valves, cylinders, and seals are all in this manual. The Pump Drive group is separate from the Hydraulic System group, so you can find the pump mounting kit and the drive coupling parts. Hydraulic hoses are listed with their end fittings and lengths. When you need a seal kit for the swing motor or a filter element for the return line, this catalog has the OEM number. Do not gamble with aftermarket seal dimensions—the wrong O-ring groove width causes leaks at 3000 psi. The factory number is the only number that guarantees fit.

Excavator Attachment Options: What’s Listed for the 6611?

The catalog includes three attachment sections: Excavator Attachment (Group 6), Clam & Dragline (Group 46), and Attachment Options (Group 50). These cover boom, stick, bucket, clamshell buckets, and dragline rigging. Part numbers for pins, bushings, cutting edges, and hydraulic cylinders for each attachment are listed. If you are swapping your hoe attachment for a clam, you need the correct stick pin and cylinder mount numbers. The catalog tells you which parts fit your serial number. Do not guess—the wrong pin diameter will wallow out the lug.

Source Validity: Why This Factory Catalog Beats Any Reprint

This is an original Koehring Cranes & Excavators publication, printed in the USA under part number 12261-81. The OCR excerpt on the first page shows the exact title block, serial number instructions, and ordering address. That means the part numbers, illustrations, and group numbering are straight from the manufacturer. I have seen reprints that blur the part numbers or skip pages. This digital copy preserves every page, including the fold-out assemblies. For background on why OEM documentation matters, see the Automotive Industry Overview. Refer to Automotive Industry Overview for related standards.

Frequently Asked Questions

Can I use this parts catalog to find service procedures?

No. This is a parts catalog, not a service manual. Torque specs and repair steps are not included.

How are parts organized in this catalog?

Parts are grouped by system — Crawler & Carbody, Upper Engine & Fuel Tank, Swing System, Pump Drive, Hydraulic System, Operator’s Cab & Controls, Electrical System, and attachments. Each group has its own section with exploded views and part numbers. For example, the crawler group on page 5 lists shoe assemblies for 19.7″, 23.6″, and 27.5″ widths, along with track links, pins, and bushings. You match your serial number range to the listed serial number column to ensure you order the correct part for your machine. This is critical because Koehring used different configurations depending on serial number. The catalog also includes a complete group index on page 3 so you know exactly where to turn. Using the wrong part because you ignored the serial number column is a mistake I see repeatedly.

If you are tired of guessing part numbers and wasting money on the wrong parts, this 90-page factory manual is what you need. Access the Factory Manual and start ordering the right parts.

• Koehring T-S44, 644 1974 Parts Catalog – Factory OEM Parts Reference
• Koehring S-155 1977 Parts Catalog – Factory OEM Parts Reference
• Koehring 366 Hydraulic Hoe Parts Catalog – OEM Factory Specs