Description

Clark-hurth 280 III Parts Catalog – 172 Pages of OEM Factory Specs

Ever had a machine down because the wrong clutch pack was ordered? I’ve seen it cost a shop three days of waiting. This Clark-hurth 280 III Parts Catalog is the actual factory document – not some aftermarket summary someone typed up on a coffee break. 172 pages of exploded views, part numbers, and the kind of detail that keeps you from ordering a $400 shaft that doesn’t fit.

Parts Breakdown – Transmission Group

Pages 2C5 through 2D5 cover the whole transmission. You get the Transmission Assembly & Clutch Cover Group (2C5), the Case & Internal Tubing (2C6), Control Levers & Linkage (2C8), and each clutch group individually: First & Second (2C11), Input–Reverse, Third & Fourth (2C14). Also the Input Shaft (2D1), Output and Reverse Shafts (2D3), Second & Fourth Shaft (2D4), and the Splitter Clutch (2D5). If you need to identify which bushing goes where inside the transmission case, this is the only reference that matches the actual casting marks. The splitter clutch section alone is worth the price – those parts get swapped around more often than you think.

Valve Group: Shift Control and Pressure Relief

Hydraulic systems on these machines aren’t forgiving. The catalog devotes pages 2D6 through 2D14 to the Valve Group: Hydraulic Shift Control Valve Assembly (2D6), Control Valve Assembly (2D8), Down Pressure Relief Valve (2D11), Pressure Relief Valve—Steering (2D12), and Valve Control Levers & Linkage (2D14). Each item has a part number and exploded drawing. You won’t find a generic “relief valve” here – you’ll see the exact spring, spool, and body. If your steering pressure relief is bleeding off, this catalog tells you which cartridge to order.

Wiring and Wheel Data – Not Just Parts

Page 2E3 gives you Wheel & Tire Data: rim sizes, tire specs, bolt patterns. Then the Wiring Group starts at 2E4 with Battery, Battery Box & Horn, continues through Wiring, Battery Cables, Decals & Name Plates, Tools (2E6), and ends with a full Wiring Diagram (2E9). That wiring diagram is a factory original – no redrawn lines with wrong colors. Trace a short in the harness without guessing which pin is what.

Who Needs This 172-Page Catalog?

DIY owners who want to rebuild their own transmission without buying the wrong part. Shop mechanics who bill by the hour and don’t have time to cross-reference aftermarket numbers. Equipment dealers who stock replacement parts and need the official Clark-hurth numbering. If you’ve ever stared at a worn-out Transmission shaft and wondered “which revision is this?”, this catalog answers it. Use it to verify part numbers before you call the supplier. Pair it with the Clark-hurth L320 1991 Parts Catalog – 690 Pages OEM Specs”>L320 1991 catalog if you run a mixed fleet. For older machines, the Clark-hurth 85III 1965 Parts Catalog – Factory OEM Specs”>85III 1965 catalog covers similar era gear. The Clark-hurth 85A, 85A1 1978 Parts Catalog – OEM Factory Specs”>85A series catalog shares some drivetrain components too.

OEM Source vs Aftermarket Parts Lists

Aftermarket part catalogs often skip the supersession history and the exact illustration. This is a direct scan from Clark-hurth’s own binder – you get the original index, the correct casting numbers, and the notes that say “see page 2D5 for splitter clutch variations.” I’ve seen aftermarket lists that show the same part number for two different shaft diameters. That doesn’t happen here. For context, the Automotive Industry Overview”>automotive industry relies on these factory prints for accuracy, and the Internal Combustion Engine”>internal combustion engine side of these manuals follows the same logic. No guesswork.

Does this catalog include torque specs for assembly?

No. This is a parts catalog, not a service manual. It lists part numbers, exploded views, and quantities. For torque specs you need the corresponding service manual.

Can I identify a part by the casting number alone?

Yes. Each exploded view has the part number next to the item callout. Cross-reference the casting number on your component with the illustration – you’ll find the correct Clark-hurth stock number and the supersession if applicable. That process alone saves hours of phone calls.

Are there any wiring diagrams in this catalog?

Page 2E9 contains the full wiring diagram. It shows harness routing, connector locations, and wire colors as Clark-hurth drew them. Not a redrawn version – the actual scanned factory sheet. Useful for tracing power loss or checking alternator circuits.

Does the catalog cover the splitter clutch completely?

Page 2D5 covers the Splitter Clutch. It shows the clutch housing, hub, discs, plates, and the snap rings. If you have a splitter that won’t engage, you can order every seal and bearing from that single page. The part numbers are exactly what Clark-hurth used in production.

This 172-page document is the only parts reference you should trust when rebuilding a Clark-hurth 280 III. Every part number is verified against original factory prints. Don’t waste time with aftermarket compilations that skip details. Access the Factory Manual now and keep it at your bench – you’ll thank yourself the next time a splitter clutch or a steering relief valve goes bad.