Description

Claas M66 Parts Catalog

If you are trying to keep a Claas M66 combine running, you have probably already wasted time on aftermarket parts that did not fit. That stops here. The Claas M66 Parts Catalog is the factory document you need on the bench – not a third-party reprint, not a scanned copy of something that was already wrong. This is direct from Claas, 107 pages of OEM part numbers and exploded diagrams that tell you exactly what you are looking at and what to order.

107 Pages of Factory Part Diagrams

Every page in this catalog corresponds to a specific assembly on the M66 TS combine. The table of contents alone runs through 70 numbered sections, each one a detailed exploded view with part callouts. You get the belt layouts, chain routes, hydraulic system schematics, and every weldment from the drawbar (DEICHSEL UND STUETZFUSS) to the grain tank unloader. When you need to identify a sprocket or a hydraulic cylinder seal, you flip to the section and read the factory number. No more calling five dealers and getting five different answers.

What Does This Catalog Cover?

Start at the front: MAEHWERK (cutter bar) sections cover the knife drive, reel frame, and dividers. Then the FEEDER CHANNEL and KETTENFOERDERER (chain feeder) – all with part numbers for chains, slats, and sprockets. Moving through the threshing area you get the CONCAVE, BEATER, STRAW REMOVAL DEVICE, and STROHSCHUETTLER (straw walkers). The cleaning system includes the SIEVE BOX, SIEVE SWING, and CLEANING FAN. Grain handling sections cover the GRAIN TANK, GRAIN ELEVATOR, RECOVERY ELEVATOR, and the entire unloader assembly with the swing tube and bagging attachment.

Hydraulics get two full sections (H1.00.50 and H1.00.51) plus dedicated pages for the gear pump (HYDROZAHNRADPUMPE), the magnetic valve control (MAGNETSTEUERUNG), and all lifting cylinders for the cutter bar and reel. You also get the electric remote control and lighting circuits. That is 107 pages of field-ready data – no fluff, no generic diagrams pulled from a different model year.

Period.

Belt, Chain, and Hydraulic System Sections

The first few indexed sections are B-BELT AND R.H. CHAINS (H1.00.2) and V-BELT AND L.H. CHAINS (H1.00.3). These pages show you the exact belt cross-section and length, the chain pitch, and the sprocket tooth count. For the hydraulic system, you get the pump assembly, control block, and cylinder port configurations. If you are rebuilding a hydraulic cylinder on the reel lift, you turn to HUBZYLINDER FUER HASPEL S 2 (section H1.00.55) and see the seal kit numbers. That is the kind of detail aftermarket catalogs leave out because they copy from a copy of a copy.

Trust Only OEM Part Numbers for Your M66

Third-party parts catalogs for agricultural equipment are often compiled from older editions or from reverse-engineered parts. They mismatch serial number breaks, combine incompatible assemblies, and sometimes list parts that were never used on the production line. This catalog is from Claas – it includes the chassis serial number range breaks (e.g., 3038 and below, 3039-4834) so you know exactly which brake axle or tandem swing your machine takes. Do not risk a warranty denial or a field failure because someone else guessed. Use the factory document.

If you need more detail on a different model, the Claas Columbus Parts Catalog – 82 Pages of OEM Part Numbers covers the earlier version. For a broader view, the CLAAS Combine Harvester and Forager Parts Catalog includes matching info for other machines. And if you have a Senator, the CLAAS SENATOR Parts Catalog is also on site.

Feeder Channel to Grain Tank: Every Component Group

This catalog does not skip anything. From the front driveshafts (GELENKWELLE VORN with serial number cutoffs at 4084 and 4085) to the rear driveshaft, the chassis, the drawbar, and the tandem suspension with brakes – it is all there. You get the colour label section (COLOUR LABEL, H1.00.70) for paint codes and decals. The grain tank section (H1.00.46) shows the auger, the floor, and the extension sides. If you need to order a new grain tank unloader swing tube, the parts are in KORNTANK AUSLAUFROHRHALTERUNG (H1.00.63).

The automotive and agricultural equipment industry relies on OEM specs to avoid failures; you can read more about that in the Automotive Industry Overview. And if you want to understand the broader context of why factory documentation matters for heavy machinery, the same overview gives background Automotive Industry Overview.

Does this catalog include torque specifications?

No, this is a parts catalog, not a service manual. It lists part numbers and diagrams for ordering replacement components.

Can I use this to rebuild the hydraulic system?

Yes – the hydraulic system sections (H1.00.50 through H1.00.55) show the pump, valves, and all cylinders with their part numbers. You will see the seal kit numbers for the lifting cylinders and the exact gear pump model. However, this catalog does not provide hydraulic schematic flow paths or pressure settings; for those you need the separate service manual. But for ordering correct seals, hoses, and fittings, this is the only document you should trust. Many aftermarket catalogs reuse old part numbers that have been superseded. The Claas M66 Parts Catalog shows the current factory numbers as of its printing.

Stop cross-referencing four different websites and guessing which part fits. Access the Factory Manual and keep the M66 in the field where it belongs.