Description

Schaeff-terex HR 4 1990 Parts Catalog – Factory OEM Parts Breakdown

You ordered a seal kit from the local supply house and it showed up with the wrong ID. The hydraulic arm on your Schaeff-Terex HR 4 is dripping, you can’t find a match in any aftermarket cross-reference, and the dealer wants a week and a serial number stamp you can’t read anymore. That’s the pain. **Schaeff-terex HR 4 1990 Parts Catalog** is what goes on the bench next to the machine to kill that pain. 132 pages of factory-issued exploded-view drawings, original German part numbers, and the exact designations that match the parts list Schaeff-Terex used when the HR 4 left the Langenburg plant in 1990.

Hydraulik-Bagger and Attachments: Factory Part Breakdown

The first section of this Parts Catalog (Bildtafel 1) covers the “Hydraulik-Bagger Schaeff-Anbau” – the hydraulic excavator attachments like the boom, dipper, and bucket cylinders. Every figure number on the TOC corresponds to a specific assembly: Bildtafel 16 is the Auslegerzylinder (swing cylinder), Bildtafel 17 the Hundeknickzylinder (retract-cylinder boom-arm), Bildtafel 18 the Löffelzylinder (dipper cylinder). You get the factory illustration, a parts list with the original manufacturer number (M.Nr. like 356/0270), and a note about which serial number range it applies to — valid from FZ-ID-Nr. 356/0229 through 356/0283. No guessing which revision fits.

Does This Catalog Cover the Motor-Drehwerk (Engine Swing Gear)?

Yes. Bildtafel 11 is labeled “Motor-Drehwerk” — the engine swing gear assembly. It includes the hydraulic installation for the motor-bagger (Bildtafel 12) and the swing-motor components. If you need the part number for the swing-coupling, Bildtafel 28 is labeled “Dreh-Kupplung”. Page 3 of the PDF shows the full list of 30+ Bildtafeln. You won’t find a generic “engine section” — it’s organized by OEM functional groups: Hydr.-Install. for working equipment, superstructure, valve manifold. That level of specificity is what keeps your billable hours from evaporating while you hunt for a pin bore size.

132 Pages of OEM Part Numbers

Page count alone doesn’t tell you everything. But 132 pages in a single-language-merged PDF (German/English/French) means each figure gets about 4 pages of dense info: exploded drawing, parts table, notes, and application range. This is not a reprint of a reprint — it’s the original edition from 1.90 (January 1990) with the exact layout Schaeff-Terex used in the factory. The spare parts list on pages 3–4 tells you exactly how to order: provide the designation exactly as listed in the catalog, the serial number from the nameplate (stamped on the front left of the upper carriage), and the part designation. That’s it. No guessing, no cross-referencing from a third-party database.

Get the Right Seal and Cylinder Parts for Your HR 4

Bildtafel 20 through 22 cover the Knickzylinder (retract cylinder) and the two flavors of Greifzylinder (grab cylinders) — part numbers 80/40 variants. If your HR 4 has a hydraulic grab or a rotator, Bildtafel 29 is labeled “Greifzylinder mit Hydraulik-Dreh-Ollafl.” (grab cylinder with hydraulic rotator). The cylinder sections include the seals, piston rods, and gland nuts with dimensional data. Ordering the wrong seal profile costs you a day of teardown and re-assembly. This catalog lets you order the exact OEM part before you pull the cylinder.

Fahrwerk (Undercarriage) and Support: Factory Reference

Bildtafel 21 is “Fahrwerk” — undercarriage. Bildtafel 22 is “Abstützung” — support/stabilizers. These sections include all the rollers, sprockets, track chains, and hydraulic outrigger components. Bildtafel 24 covers “Werkzeug” (tools) — the special service tools recommended by the factory. If you’re swapping tracks or rebuilding the final drives, having the part numbers for the bearing kits and seals from Bildtafel 21 saves a second trip to the parts counter.

Source Validity: Why This OEM Parts Catalog Beats Aftermarket Digests

Aftermarket parts catalogs almost always compress multiple model years into one chart and omit the serial-number split. This Schaeff-Terex manual is a single-model, single-Series A (HR 4, Series A) publication with the exact valid-from serial range printed on the cover. The TOC shows Bildtafel 1 through 30, plus notes. The front matter (page 5) includes a multi-language ordering instruction — French, German, English — so you know it’s a genuine factory export document. Schaeff-terex SKL 863 2003 Parts Catalog – OEM Factory Manual and Schaeff-terex SKL 853 2003 Parts Catalog – Factory OEM 485 Pages follow the same format for later models. Schaeff-terex SCL 515 2002 Parts Catalog – OEM Factory Manual covers the SCL line. Each one is the genuine factory file, not a PDF scraped from a forum.

If you need background on how OEM documentation is structured, Automotive Industry Overview provides some context, but the real value is in the part numbers, not the theory. Automotive Industry Overview covers the broader manufacturing standards, but I’d rather you read the ordering instructions on page 5 of this catalog instead of clicking a link.

Frequently Asked Questions

Does this manual include torque specs for the undercarriage bolts?

This is a parts catalog, not a repair manual. No torque values are listed. You need the separate service manual for tightening specifications.

How do I use this catalog if the serial number on my HR 4 is outside the range 356/0229–356/0283?

If your machine’s FZ-ID-Nr. is outside that range, the parts listed in this edition may not match your HR 4. Schaeff-Terex updated the parts catalog with each production run. Check the publication date (1.90) and your serial number. For machines outside that range, you need a later edition or a supplement. This catalog is specifically valid from serial numbers 356/0229 to 356/0283 for Series A. Ordering parts for a different serial range without the correct catalog will likely result in incorrect seals, different cylinder bore diameters, or incompatible hydraulic fittings. Always verify your serial number against the cover of the manual before ordering.

One catalog, one machine, one production range. That’s how the factory intended it. Don’t rely on a screen grab from a forum when the hydraulic line on your HR 4 starts weeping. Access the Factory Manual.