Description

Schäffer D 20 W Parts Catalog

If you’re digging into a Schäffer D 20 W loader and you don’t have the OEM Parts Catalog, you’re working blind. I’ve pulled enough misordered bearings and bushings out of boxes to tell you the difference between a factory number and a aftermarket cross-reference is the difference between a job that seals and a job that leaks. This catalog is 13 pages of Schäffer-issued part numbers, exploded views, and hydraulic circuit diagrams. No translations, no guesswork – just the original German factory data that tells you exactly which Kronenmutter or Lagerbuchse goes where.

The binder is thin, but that’s because it’s specific. 13 pages cover the D 20 W frame, hydraulics, and attachment systems with the clarity you expect from a Maschinenfabrik that’s been building loaders since before most of us were born. Every bolt, every seal, every Schmiernippel is listed with its original part code and quantity.

Hydraulic Schematic: 175 Bar and 50 Bar Circuits

Page 2 of the catalog shows the full Hydraulikplan – the hydraulic diagram. You get pressure lines for the Schwinger-Zylinder (oscillation cylinder) at 175 bar, the Lenk-Zylinder (steering cylinder) at 50 bar, and the Werkzeug-Zylinder (tool cylinder) also at 175 bar. The SPV 18 and the Zahnradpumpe (gear pump) with n. 3600 rpm are called out. If you’re replacing a cylinder seal or a hydraulic line, you need the exact part number from this diagram. The manual gives you that – not a generic “match the thread”.

Frame Assembly: Finding the Right Bushing

The frame section (Rahmen, page 3-4) lists 22 items including the Vorderes Gehäuse (front housing) and Hinteres Gehäuse (rear housing), with part numbers like HL 20.001 and HL 20.002. The Lagerbuchse 85 x 75 (item 5) and Lagerbuchse 50 x 40 (item 12) are separate from the Lagerbuchse 30 x 20 (item 17). If you try to substitute a bushing based on diameter alone, you’ll get the wrong press fit. The catalog shows the Schäffer part number and the exact dimensions – 85 x 75 means 85 mm outer, 75 mm inner.

For other Schäffer loaders, check the Schäffer D905-E2B-EU-XL1 Parts Catalog – OEM Factory Spare Parts List or the Schäffer 3033(S)/3026 Parts List Manual. The Schäffer 4042 / 4048(S) Spare Parts List covers the larger frame models. Each catalog uses the same factory numbering system, so once you learn the D 20 W, the others make sense.

3 Reasons to Trust OEM Parts Data Over Aftermarket

Aftermarket catalogs often consolidate multiple revisions into one number, or they drop the hardware (splints, nuts, clip pins) that the factory says must be replaced each time. This catalog keeps the original Schäffer part numbers – you see the exact bolt grade and the DIN standard. For example, the Schraube M 16 x 45 uses DIN 933, and the Federring A 16 uses DIN 172 A. That matters when you’re torquing into cast iron. Mismatching bolt classes on a loader frame gets you a broken Gelenk.

I’ve seen the difference when a tech brings in a third-party print and the steering cylinder bore is off by 0.5 mm. That half millimeter means a blown seal at 175 bar. The OEM catalog eliminates that variable. For an overview of how factory specifications protect against liability in heavy equipment, see Automotive Industry Overview. Another reference on industry standards is Automotive Industry Overview.

What You Get in 13 Pages

This isn’t a service manual – it’s a parts catalog. That means every page is exploded diagrams with callouts, part numbers, and quantities. Page 1 is the title and machine identification. Page 2 is the hydraulic plan. Pages 3-4 cover the frame (Rahmen). The remaining pages continue with attachments and fasteners. You get the Klappsplint 8 Ø (item 18, DIN 11023) and the Schmiernippel M 8 x 1 (item 16). If you need to order a replacement Gelenkbolzen, the part number HL 11.004 is right there.

For the DIY loader owner in Texas who wants to rebuild his D 20 W bucket linkage without paying a Schäffer dealer to decode numbers, this catalog is your cheat sheet. Translate the German header if you need to – the numbers are universal.

Audience Fit: Who Needs This Catalog

This catalog is for anyone who owns or services a Schäffer D 20 W Hoflader. Home garage enthusiasts who bought a used loader at auction, small-farm operators, and even experienced mechanics who aren’t fluent in Schäffer’s part numbering system will save time. If you’ve ever wasted an afternoon hunting for a specialty bushing because you didn’t know the OEM number, this is the document that ends that hunt.

Source Validity: Original Factory Print

This is a direct scan of the original Schäffer Maschinenfabrik GmbH parts catalog – not a copy-paste from a third-party database. The document ID is SCHAFFER_D_20_W_Parts_Catalog_de-36814014897.pdf. It’s in German, but the part numbers and diagrams are language-independent. No aftermarket translator has renumbered anything. You see the same data the Schäffer dealer sees. That’s the only way to guarantee you get the right parts the first time.

How many pages is the Schäffer D 20 W Parts Catalog?

13 pages. That covers the entire loader – frame, hydraulics, steering, tool attachment, and all fasteners.

Does this catalog include torque specs or assembly procedures?

No. This is a parts catalog – it lists part numbers and exploded views only. For torque specs and service steps, you need the separate Schäffer D 20 W service manual. But for ordering replacement parts, this is the final word.

Why is the catalog in German? Can I still use it if I don’t read German?

Yes. The part numbers, quantities, and dimensions are universal numbers. The headers are German (e.g., “Rahmen” for frame, “Lagerbuchse” for bearing bush), but a quick translation of those few words is all you need. Every item has a numeric part code starting with HL or other prefixes.

Will this catalog work for a Schäffer D 20 W built after 1990?

This catalog covers the D 20 W with the Kubota engine. If your loader’s serial number matches the range indicated on the title page (serial number blank in the scan – verify against your machine’s plate), the parts listed are correct. For later revisions, Schäffer may have superseded some part numbers, but the catalog gives you the original index to start from.

Don’t waste time guessing part numbers on a loader that needs to get back to work. Get the factory-issued reference that lists every piece of your Schäffer D 20 W. Access the Factory Manual now and keep it in your toolbox for the next rebuild.