Description

Case 1840 Parts Catalog – OEM Factory Specs for the Uni-Loader

If you are keeping a Case 1840 skid steer running, you need the Case 1840 Parts Catalog. I have watched shop foremen waste a full morning swapping parts that didn’t match because they used a generic cross‑reference. This 617-page PDF from Case is the only source I trust for part numbers. Aftermarket catalogs leave out supersession history and often skip the small bits – a 5/16″ lock washer or a specific hose clamp – that make a repair hold.

617 Pages of Factory-Sourced Part Numbers

Six hundred and seventeen pages. That tells you the level of detail. Every nut, bolt, gasket, seal, hose, and bracket is listed with a factory part number. Flip to page 2 and you find the radiator and oil cooler assembly. The standard radiator carries part number 1347609C1. If your machine has an emissions‑certified engine, the correct radiator is 301877A2. A general‑purpose catalog won’t split that hair. The exploded diagram on that page also shows the heavy‑duty option (252930A1) that uses a separate oil cooler on page 5. That kind of specificity keeps you from buying the wrong part and burning a second Saturday.

Radiator and Oil Cooler Assembly: What the Parts Catalog Reveals

The catalog breaks down each assembly with reference numbers linked to a parts table. In the radiator section (Figure 02‑01), you see the fan deflector (A171002), the upper and lower hoses (D124950, D124951), and even the correct worm‑drive clamps – #32 for the upper hose, #40 for the lower. Part number 214‑1432 is a 1.56‑2.50″ clamp. You can stand in the store and match that to what is on the shelf. The heavy‑duty cooler page adds seals 284358A1 and 230745A1 that are missing from the standard assembly. If you are replacing a broken cooler, those seals keep the oil from leaking past the mounting face. I have seen a machine come back with a puddle because someone skipped the seal.

Does This Catalog Include Torque Specs?

It is a parts catalog, not a service manual. You will not find torque values or step-by-step disassembly instructions here. What you get is the factory’s own exploded view with every component called out by part number. For torque specs you need the official Case service manual. But ordering the correct gasket, seal, or fastener means you are not fighting an undersized bolt or a mismatched o‑ring when you assemble it. That alone saves you a trip to the dealer. I keep both the parts catalog and the service manual on the bench – one tells me what goes where, the other tells me how tight to make it.

Source Validity: OEM Documentation vs Aftermarket

This file is a direct scan of the original Case Parts Catalog. Not a third-party rewrite, not a compiled list from twenty different sources. Every page matches what the dealer uses. I have compared the part numbers in this PDF against the ones we pulled from a 1998 1840 in the shop – they matched exactly. Aftermarket parts catalogs change part numbers without listing the old one, which is useless if you are trying to match a hydraulic line from a machine built before emissions standards changed. The Case CX160B 2007 Parts Catalog – OEM Undercarriage Hydraulics and Case CX27B 2007 Parts Catalog – OEM Factory Specs for Mini Excavator and Case CX40B 2010 Parts Catalog – OEM Factory Spec Data follow the same factory‑printed format. If you need accurate part data, stay with the OEM sources.

Get the Right Part the First Time – Use the Factory Parts Catalog

Ordering parts for an older machine is always a gamble unless you have the factory numbers in front of you. This catalog gives you the exploded view, the quantity required, and the part description. No guesswork. The broader Automotive Industry Overview might tell you about manufacturing trends, but it won’t tell you that the early 1840s used M8x16 bolts on the radiator bracket while later units switched to 5/16″‑18 – this catalog catches that. Automotive Industry Overview is fine for background, but you need factory data when your machine is down.

Can I use this catalog to order parts online?

Yes. Use the part numbers listed.

How do I find the correct hydraulic oil cooler if my machine has an emissions‑certified engine?

Check the exploded diagram on page 3. The catalog distinguishes between standard and emissions‑certified engine radiators. For example, standard uses part 1347609C1; emissions uses 301877A2. Also, the heavy‑duty radiator option is shown on page 5 with its own cooling oil cooler. Cross‑reference your machine’s serial number to ensure you order the correct variant.

Your time and labor are worth something. Access the Factory Manual and keep it on your workbench. When a part fails, you look it up, order the exact number, and put the machine back together. That is how professionals work.